Developers don't always need another AI chatbot.
Sometimes they just need to format JSON, convert data, calculate something, generate a UUID, inspect a file, or clean up text.
But these small tasks often mean opening multiple websites, searching for tools, dealing with ads, and switching between tabs.
I wanted to approach this problem differently.
So I'm building Cometflow Do — a native Android utility app designed around one simple idea:
Describe what you want to do. Get the right tool. Get the result.
What is Cometflow Do?
Cometflow Do is a ChatGPT-inspired command-based utility application, but its core focus is actual utility execution rather than simply generating AI responses.
You enter a request in natural language, and the app's intent-routing system identifies the relevant utility.
For example:
- "Convert this JSON into CSV."
- "Calculate a 15% discount on 2499."
- "Generate a secure random password."
- "Remove duplicate lines from this text."
- "Format this JSON."
- "Convert this HEX colour to RGB."
- "Calculate the difference between two dates."
The goal is to make these tasks accessible through one consistent interface.
50 utilities — and growing
I've recently expanded the tool registry to 50 utilities.
Some categories include:
Developer utilities
- JSON formatter and validator
- XML formatter and validator
- YAML formatter and validator
- SQL formatter
- Regex tester
- JWT decoder
- UUID generator
- Hash calculator
- JSONPath query tool
- Code diff checker
Text and data tools
- Text analyzer
- Markdown table generator
- CSV formatter
- Text case converter
- Duplicate line remover
- Word frequency analyzer
- URL encoder and decoder
- Base64 encoder and decoder
Everyday utilities
- Percentage calculator
- Unit converter
- Date difference calculator
- Loan EMI calculator
- Compound interest calculator
- Random number generator
- QR code generator
And more.
These are intended to be deterministic utilities: the app should actually process the input and return a result, not pretend that a task was completed.
Why native Android?
Cometflow Do is being developed using:
- Kotlin
- Jetpack Compose
- Native Android architecture
I'm prioritizing:
- Local-first processing
- Offline functionality wherever possible
- No mandatory AI API key
- No mandatory subscription
- No unnecessary account requirement
- A consistent command-based interface
I want the application to remain useful without depending on an expensive backend.
The challenge isn't adding 500 tools
Adding hundreds of buttons is easy.
Building a reliable system that understands what the user wants, selects the correct utility, requests missing information, handles errors, and produces a verifiable result is much harder.
That's where I want to focus.
I'd rather have 500 genuinely useful utilities that work properly than 1k features that only look impressive.
GitHub & development
The project is actively being developed, and I'm currently working on expanding the utility system and improving build reliability.
Project: Cometflow Do
Platform: Native Android APK
Repository: https://github.com/X-Studios-ops/Cometflow-Do
Tech stack: Kotlin + Jetpack Compose
A question for developers
If you could access one command-based utility app on your Android phone, what would you want it to do?
- More developer tools?
- File processing and conversion?
- Advanced calculators?
- Offline coding utilities?
- Something completely different?
I'm especially interested in suggestions for utilities that developers actually use every day.
Let's build something genuinely useful.
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