Contact person: Android Multilingual Note-Taking SaaS

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Location: Patna, India

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I’m building a OneNote-style note-taking application that runs natively on Android and is offered through a monthly subscription. The goal is a clean, reliable writing space that syncs quickly and exposes a secure, sellable REST API so other developers can license core features in their own products.

Core features I have in mind
• Free-form notebooks, section tabs and pages, with rich-text editing, drawing tools and image/audio attachments.
• Fast offline/online sync to the cloud.
• A fully documented REST API (auth, CRUD notes, webhooks for changes) that is designed from day one to be a revenue stream—usage metering, key management and throttling must be included.
• Localisation for English, Spanish, Mandarin, Hindi, Bengali, Tamil, Telugu, Urdu and Punjabi; text in the UI should switch dynamically based on the device language.
• In-app billing for the monthly plan, plus Stripe or Google Play Billing on the backend, with graceful handling of failed payments and plan upgrades.
• Secure user management (OAuth/Google sign-in preferred) and encrypted note storage.
• Admin dashboard to view subscriptions, API usage and basic analytics.

Deliverables
1. Production-ready Android app bundle (Kotlin or Flutter are fine).
2. Deployed backend (Node.js, Django or comparable) on AWS, GCP or Azure with CI/CD scripts.
3. OpenAPI 3.0 spec and Postman collection for the public API.
4. Complete localisation files and translation guidelines for future languages.
5. Developer-level documentation covering architecture, API monetisation flow and environment setup.
6. A short video walk-through proving smooth note syncing, language switching and successful subscription flow.

Acceptance will be based on zero critical crashes in Firebase Crashlytics, API response times under 300 ms at 100 rps, and a successful test charge on a sandbox subscription.

If you have shipped SaaS products on Android before and can demonstrate solid localisation and payment experience, let’s map out milestones and get started." (client-provided description)