Android application for habit tracking – Flutter/Firebase

Budget: 3000 PLN Deadline: 40 days

Hello! I am ready to implement this habit tracker for Android using your stack (Flutter + Firebase + RevenueCat) with high quality.

I mainly work on closed (NDA) projects, so I do not have a public portfolio, but I guarantee clean code, adherence to deadlines, and full coverage of all declared functionality from localization (PL/EN) and flexible habit settings to notifications and subscriptions.

I would be happy to break the work into stages with phased delivery. The complete source code, instructions, and ownership rights will be entirely yours after completion. Feel free to write, and I will gladly discuss the details and get started!

Budget: 4000 PLN Deadline: 15 days

Hello. The scope is clear and it is a standard set for a habit tracker,
so I can answer straight away without a long discovery.

Stack as you prefer: Flutter with Firebase for auth and sync, local
notifications, RevenueCat for the premium part. I would use RevenueCat
rather than raw Google Play Billing, it handles receipt validation,
restoring purchases and subscription states, which saves a lot of edge
case work later and costs nothing at your volume.

One decision worth making early: whether streaks and statistics are
calculated on the device or in Firebase. On device is faster, works
offline and keeps your Firebase costs near zero, which suits a habit app
where people open it in the morning without a connection. Sync then only
carries raw records, not computed values.

18 days, 15000 UAH. The timeline includes a buffer for testing on real
devices and for notification behaviour, which differs between Android
versions and manufacturers.

Publishing needs a Google Play developer account. If you already have
one, I will prepare the build and the store listing.

Question: in the free version, is there a limit on the number of habits,
or is premium only about statistics, themes and extra goal types? This
changes how the paywall is built and how much of the logic sits behind it.

My work, everything is live and opens in a browser:
https://kirill-dev.mzuev5113.workers.dev Expand

Budget: 33300 PLN Deadline: 15 days

Hello! I made a similar application, but it was related to sports) I am ready to do everything turnkey, the admin panel and the application.

Budget: 5000 PLN Deadline: 15 days

Good day!

I am interested in your project and would be happy to take on its implementation. I work with Flutter and Firebase, so this format of the application is well known to me.

I am attaching examples of my work below. I have indicated the approximate cost and timelines in my bid.

I initially see the division of work into the following stages:
- authorization, creation, and management of habits;
- history, statistics, reminders, and synchronization;
- Premium features, payments, final testing, and preparation for handover.

The estimate includes the development of all agreed functionality, testing, handover of the source code, and instructions for launching the project.

I would be glad to discuss the details and answer any questions.

Examples of work:

https://play.google.com/store/apps/details?id=com.antivirusprotector
https://play.google.com/store/apps/details?id=com.nivustop.cleaner
https://play.google.com/store/apps/details?id=com.airen.cleaner
https://play.google.com/store/apps/details?id=counterstep.euroapp.live Expand

Budget: 6500 PLN Deadline: 30 days

Hi! ❤️ A habit tracker succeeds when daily use feels effortless while progress, reminders, and statistics stay genuinely motivating.

I will build the Android app in Flutter with Firebase authentication, cloud sync, Google sign in, local notifications, Polish and English translations, light and dark themes, and Google Play Billing or RevenueCat for premium access. The app will support flexible schedules, binary and numeric goals, streaks, calendars, progress tracking, pausing, archiving, and clean phased delivery with full source code and launch documentation.

Do you already have UI designs, or should the visual system be created from the references?
Which premium features should be included in the first release?
Hope to discuss these with you.

Warm regards,
Youssef

Budget: 7000 PLN Deadline: 21 days

Hello Piotr!

I am Nina from the Valflow team. Our Flutter developer has extensive experience in creating mobile applications for Android with Firebase integration, local notifications, and subscription systems (RevenueCat / Google Play Billing).

We would be happy to implement a comprehensive Habit Tracker for Android with full transfer of copyright and source code.

Proposed division into stages:

Stage 1: Architecture, UI/UX & Core (2,500 PLN)
• User interface (light/dark theme, localization PL/EN).
• Authorization (Email + Google Sign-In) and Firestore database.
• Creating and editing habits (categories, icons, digital goals, and yes/no).

Stage 2: Tracking Logic & Notifications (2,500 PLN)
• Main screen "Today," calendar, streaks, and statistics.
• Local notifications and data synchronization.

Stage 3: Monetization & Testing (2,000 PLN)
• Paywall integration (RevenueCat / Google Play Billing).
• Testing, transfer of source code, and launch instructions.

Examples of our projects:
https://valflow.dev/

Terms of implementation:
• Total cost: 7,000 PLN
• Completion time: 21 days

We are ready to discuss the details and start working! Expand

Budget: 2100 PLN Deadline: 21 days

I can make the project. Price is 2100PLN, term up to 21 days.
Only important questions is do you have design already?

Budget: 6500 PLN Deadline: 70 days

Hello. My name is Alexey, and I represent a group of developers – NC-1. For over six years, we have been creating websites, mobile applications, online stores, ERP/CRM systems, and other e-commerce products.
We have extensive practical experience in cross-platform development using Flutter / Dart for Android, integrating Firebase services (Auth, Firestore, Cloud Messaging), setting up subscriptions through RevenueCat / Google Play Billing, implementing local notifications, and multilingual support.
I propose our team for the application development:
Project Manager — Project management, communication
UI/UX Designer — Figma, prototyping
Flutter Developer — Flutter / Dart
Backend Engineer — Firebase (Auth, Firestore, Cloud Functions)
QA Engineer — Manual and automated testing
I suggest breaking it down into the following stages:
Analytics and Design
Basic architecture and Authorization
Core functionality
Statistics, Notifications, and Localization
Monetization and Release
What is included in the cost:
Full cycle of design and development of the application using Flutter (allows for a quick release of a version optimized for Android, with scaling potential).
Setting up cloud infrastructure (Firebase) and securing user data.
Integration of billing systems for proper subscription functionality.
Localization of the interface into the two required languages.
Detailed instructions for deploying the application, building, and supporting the product.
Full transfer of the source code and all property rights upon project completion.
Preliminary cost and timeline: 32,800 PLN, 45 working days
Applications we have made (Flutter):
https://play.google.com/store/apps/details?id=com.inilabs.storeking.customer
https://apps.apple.com/ru/app/m10/id1642308007
https://play.google.com/store/apps/details?id=co.classplus.pes
We would be very happy to learn more about your project, discuss the design and use cases of the application.
Best regards, Alexey M. Expand

Budget: 1900 PLN Deadline: 10 days

Deadline - 10 days. Budget - 1900 PLN for a complete habit tracker on Flutter/Firebase with premium subscriptions.

Piotr, I have created habit trackers and journals on Flutter — streaks, numerical goals, local reminders, synchronization via Firebase. I know this niche inside out.

Two things that determine the fate of the app:
— Data structure in Firestore. If streaks and history are calculated on the fly, the app will start to lag with 2-3 months of data. Generated execution records need to be stored separately from the habit metadata.
— Local reminders. Android 13+ requires explicit permission for exact alarms; otherwise, the system kills them in the background. This needs to be handled right away.

Division into stages:
1. Core: creating habits, categories, frequencies, goals (binary/numerical), day screen, calendar, streaks, statistics. Firebase Auth + synchronization. PL/EN, light/dark theme.
2. Premium: Google Play Billing or RevenueCat, paywall, purchase testing.
3. Publishing on Google Play with complete code and documentation.

I will send relevant examples of Flutter apps in the chat here.

Do you already have UI mockups in Figma, or is design also needed? Expand

Budget: 1234 PLN Deadline: 12 days

Good morning! I would be happy to take on the implementation of a habit tracker application for Android in Flutter/Dart.

I will complete the entire specified scope: creating and managing habits, various types of goals and frequencies, calendar, series and statistics, local reminders, Firebase Auth + data synchronization, email/Google login, PL/EN, light/dark theme, and a Free/Premium model with Google Play Billing or RevenueCat.

Budget: 2000 PLN Deadline: 20 days

Hello! I can implement your project both in Flutter - hybrid development (later it can be easily adapted for iOS), and natively - only for Android.

Budget: 1900 PLN Deadline: 15 days

Good day, I am interested in your project. I can complete this task in the shortest possible time. I look forward to your feedback.

Budget: 2000 PLN Deadline: 1 day

Hello, I have extensive experience in programming with Flutter.
Contact me privately.
I would be happy to collaborate with you.

Budget: 1905 PLN Deadline: 11 days

The topic of local notifications when changing time zones and verifying subscriptions in Google Play is classic - without good local validation, people either get premium for free or reminders stop after a system restart. From experience, I know that Android version 13 and above requires explicit consent for notifications and proper setting of exact alarms; otherwise, the system will kill the background habit notification. I recently did this and wrote such code for scheduling notifications:
final scheduleTime = tz.TZDateTime.from(pickedTime, tz.local);
await localNotifications.zonedSchedule(
id, title, body, scheduleTime, details,
androidScheduleMode: AndroidScheduleMode.exactAllowWhileIdle,
uiLocalNotificationDateInterpretation: UILocalNotificationDateInterpretation.absoluteTime);
My plan is: connecting an SQLite database with notifications, synchronization with Firebase Auth and Firestore, implementing RevenueCat for payment handling. Write if you have questions.

Budget: 1905 PLN Deadline: 30 days

Piotr, creating a habit tracking system primarily requires a well-thought-out database structure in Firebase that allows for efficient management of statistics and history without unnecessary delays. I am focusing on creating an intuitive interface for the today's tasks screen and a solid integration with Google Play Billing for the Premium version.

I will handle the complete implementation of Flutter, from habit logic to cloud synchronization and local notifications. The application will have a clear user role system and support for both language versions according to your requirements.

What priorities do we adopt when configuring payments - do you prefer to focus on subscriptions or one-time fees for Premium access?

Budget: 5000 PLN Deadline: 12 days

💪💪💪

https://play.google.com/store/apps/details?hl=en_US&id=com.spiralstudio.habito

𝘼 𝙧𝙚𝙡𝙞𝙖𝙗𝙡𝙚 𝙁𝙡𝙪𝙩𝙩𝙚𝙧 𝙝𝙖𝙗𝙞𝙩 𝙩𝙧𝙖𝙘𝙠𝙚𝙧 𝙣𝙚𝙚𝙙𝙨 𝙤𝙛𝙛𝙡𝙞𝙣𝙚-𝙛𝙞𝙧𝙨𝙩 𝙙𝙖𝙩𝙖, 𝙨𝙮𝙣𝙘, 𝙧𝙚𝙢𝙞𝙣𝙙𝙚𝙧𝙨, 𝙖𝙣𝙙 𝙗𝙞𝙡𝙡𝙞𝙣𝙜.

The main challenge is not simply creating habit CRUD screens. The app needs consistent habit states across frequencies, pauses, archives, completion history, streaks, statistics, and daily progress—while keeping local reminders reliable and user data synchronized through Firebase. Premium access and Google Play subscriptions also need careful entitlement handling.

My proposed approach:
💨 1. Architecture & Discovery
Define the habit data model, frequency logic, completion tracking, offline behavior, Firebase structure, authentication, Premium entitlements, and notification strategy.
💨 2. Flutter Implementation
Build the Android app in phases: Email/Google Sign-In, habit management, categories, themes, today's dashboard, numerical goals, calendar/history, streaks/statistics, local notifications, Firebase synchronization, and Google Play Billing or RevenueCat.
💨 3. Testing & Handoff
Test recurring habits, missed days, pauses, timezone changes, offline/online sync, notifications, and subscription states. Deliver the complete Flutter source code, Firebase configuration, launch documentation, and project handoff.

Most developers will build the screens first and solve data consistency later. I would instead establish the data and state architecture first, so the calendar, streaks, statistics, reminders, and Premium features all work from one reliable foundation.

I can review the detailed scope and propose the safest milestone breakdown with estimated cost and delivery timeline. Would you like me to outline the first milestone and quote structure?

I'd recommend an offline-first approach for habit completion, with Firebase synchronization handled in the background.

Thanks.
Leo Expand

Budget: 100 PLN Deadline: 1 day

You need an Android habit tracker at the level of HabitNow/Loop: habits, today, streaks, statistics, reminders, account, and Premium through Play — no iOS.

I would develop it natively on Android using Kotlin + Jetpack Compose + Firebase Auth/Firestore (sync), local notifications, PL/EN, light/dark mode, Google Play Billing. Flutter is also possible if it's a strict requirement for you, but my working Android framework is specifically Compose, so I rely on it for reliability. I will build the UI/logic according to your style after a brief agreement on the screens.

What I already have experience with: Android Compose, Firebase, full cycle app/API/admin, accounts, and production deployment. Portfolio https://gooru-lab.github.io/portfolio/ — there are no separate public habit trackers available, but I can show relevant Android/Firebase pieces during the interview.

Estimate for the full scope based on the specifications (no iOS)
Price 1,000–2,500 USD
Timeline 4–10 weeks
What’s included: habits CRUD/archive, categories/icons/colors, frequencies, boolean and numeric goals, Today + daily progress, history/calendar/streaks/statistics, local reminders, email+Google login, Firebase sync, PL/EN, themes, free/Premium + Play Billing, code handover, README, ownership rights. Not included: iOS, marketing in the Store, moderation of the Play account on your side, complex social/chat, web cabinet.

Stages
1) MVP offline + Today + reminders · 2.0–2.4k · 3–4 weeks
2) Account, Google/email, Firebase sync · 1.2–1.6k · 2–3 weeks
3) History, calendar, streaks, statistics · 0.9–1.2k · 2 weeks
4) Premium + Billing, i18n, themes, polishing, delivery · 0.7–1.3k · 2–3 weeks

Before fixing, one question. Is Premium a subscription monthly/yearly, or a lifetime unlock? And is Flutter a must-have for you, or is Compose okay if the app will be more stable under Android-only? Expand

Budget: 4500 PLN Deadline: 30 days

Hello!

I would be happy to take on the creation of a habit-building and monitoring application for the Android system. The technologies you mentioned in the announcement (Flutter + Firebase + RevenueCat) are an ideal and proven tech stack for this type of project — ensuring fast performance, smooth UI, and seamless payment integration and cloud synchronization.

I am well acquainted with applications like Loop Habit Tracker and HabitNow — I fully understand how important interface fluidity, reliable local notifications, and clear statistics and streaks are.

📂 Work Examples:
You can view detailed examples of my completed projects, screenshots, and client reviews directly on my profile on the platform. There you will find a portfolio demonstrating my experience in creating mobile applications, working with Firebase, and complex interfaces.

🗺️ Proposed Work Breakdown (Milestones):
Stage 1: Architecture, Authorization, and Database (Firebase)

Configuration of the Flutter project, architecture, and state management.

Login/registration (Email + Google Sign-In).

Cloud Firestore database with offline/online mode support.

Stage 2: Main Habit Logic, Calendar, and Statistics

CRUD for habits (create, edit, pause, archive, categories, colors, icons).

Handling types of goals (completed/not completed and numerical goals) and frequencies.

Main screen "Today," calendar, calculating streaks, and progress analytics.

Stage 3: Interface, Localization, and Notifications

Implementation of light and dark themes (Light/Dark mode).

Multilingual support (i18n): Polish and English.

Configuration of local notifications and reminders (flutter_local_notifications).

Stage 4: Monetization (RevenueCat)

Logic for free version limitations and unlocking Premium features.

Integration of RevenueCat (handling subscriptions and one-time purchases through Google Play Billing).

Stage 5: Testing, Optimization, and Project Handover

Testing the application on various versions and devices with Android.

Preparation for publication in the Google Play Store.

Handover of the complete source code, deployment documentation, and copyright ownership.

I would be happy to discuss the details in chat and clarify the scope to provide a final, binding estimate and schedule.

Feel free to contact me! Expand

Budget: 700 PLN Deadline: 10 days

Hello! I am Serhiy, I have 8 years of experience in IT across various technologies: web/mobile, backend, API, integrations, automation, and data handling.
I see the main task as follows: An Android application for habit tracking – Flutter/Firebase. I am looking for a developer to create an Android application for building and...

Skills for the task:
- web/mobile development
- reporting, analytics, and business automation
- solution architecture
- development, testing, and release
- post-launch support

Portfolio: https://software.campstudio.net/#showcases Expand

Budget: 4000 PLN Deadline: 10 days

Hello, I am ready to develop an Android application for habit tracking using Flutter/Firebase with creation, editing, archiving, categories, colors, and different frequencies of execution. I will create a clear data structure in Firebase, the logic for habit statuses, and a neat mobile interface for Android. I have experience in mobile application development, examples: GoPrint: https://apps.apple.com/ua/app/goprint-%D1%82%D0%B5%D1%80%D0%BC%D1%96%D0%BD%D0%B0%D0%BB%D0%B8-%D0%B5%D0%BA%D0%BE-%D0%B4%D1%80%D1%83%D0%BA%D1%83/id1501689517?l=ru, Kolo: https://apps.apple.com/ua/app/kolo/id1501863681?l=ru. I can start by clarifying the screens and scenarios, then build an MVP with basic habits, a calendar/statistics, and synchronization. After that, we can gradually add reminders, goals, and enhanced analytics without reworking the architecture. git: github.com/onyx144

Budget: 7500 PLN Deadline: 35 days

Good morning. The scope is well described, but with this number of features, it is safest to divide the application into two stages: first a stable MVP with full habit logic and synchronization, and then Premium and Google Play payments.

In the first stage, I will prepare a Flutter/Firebase application covering habit creation and editing, schedules, binary and numerical goals, day screen, history, calendar, series, local reminders, email/Google login, and data synchronization. From the beginning, I will include Polish and English languages, as well as a light and dark theme.

The second stage will include advanced statistics, Premium features, RevenueCat or Google Play Billing, purchase testing, and preparing the application for publication.

Upon completion, I will provide the full source code, Firebase configuration, and instructions for running the project.

Do you already have a UI project in Figma, or should preparing a complete interface also be included in the scope?

Budget: 15000 PLN Deadline: 35 days

Hello!
I am the lead app developer of a mini-team!
Our team is happy to develop your Habit Tracker for Android using Flutter & Firebase. We work "turnkey" — our team includes a UI/UX designer who will create a user-friendly and modern design (PL/EN, light/dark themes).

What is included in the estimate: UI/UX design, development on Flutter, notification setup, and RevenueCat (subscriptions), testing, delivery of source code, instructions, and property rights.

Development stages:
UI/UX design and database design in Firebase.
Core functionality (habit creation, custom goals, reminders, authentication).
Statistics/calendar, monetization, multilingual support, and preparation for release.

Timeline: 4–6 weeks
Estimate: $3,800 – $5,200

📁 Portfolio: https://www.kisolid.com/uk/portfolio
Ready to discuss the details and start working! Expand

Budget: 3300 PLN Deadline: 30 days

I have extensive experience in mobile application development, working with Firebase, authentication, local notifications, integrating payment systems, as well as publishing applications on Google Play and the App Store.

The concept of the application is clear, and I am interested in similar projects. For a more accurate assessment, I would like to review a detailed specification or prototype, if it is already available.

You can view examples of my work in my profile. If needed, I can also send additional cases privately and answer any questions.