Local-first
The app works offline. The cloud is a convenience, not a requirement to record a credit sale or check a tender.
Antonio Sánchez
Founder · Android developer
Peru · Remote
The studio
A signature, not a factory.
Antonio Apps is a small studio. That is an advantage: you talk to the person who designs and builds, without layers of middlemen.
Principles
How I think about software.
I am Antonio Sánchez, an Android developer in Peru. I started building apps to solve nearby problems: a credit notebook for a small shop, a public tender radar for someone selling to the government. That is still the starting point: understand the problem before choosing the technology.
I work with Kotlin, Jetpack Compose and a local-first architecture. I care about products that work on a mid-range phone, with intermittent internet and data that matters. I also integrate AI when it solves something real, not when it is a box to tick.
Data under control
Minimal permissions, private storage and zero ads. If the product does not need a piece of data, we do not ask for it.
Author's finish
Every screen, word and transition has a reason. Detail is not decoration: it is respect for the person using the app.
Maintainable code
Clear architecture, tests where they matter and documentation so the product does not depend on one person.
Tools
The stack, without religion.
I use what solves the problem. These are the tools I work with almost every day.
Android
- Kotlin
- Jetpack Compose
- Material 3
- Room
- WorkManager
Backend
- Supabase
- PostgreSQL
- Edge Functions
- Firebase
Web
- Astro
- TypeScript
- Tailwind CSS
- Cloudflare
AI
- OpenAI
- OCR
- Classification
- Automation
How I work
Direct, documented and no smoke.
- I speak clearly from day one: what can be done, what cannot and what it costs.
- I deliver something you can install and test every week.
- I document decisions so the team can continue without me.
- I prefer long relationships over projects that are forgotten a month later.
Let’s talk
Do you have an app in mind?
Tell me what you want to build, for whom, and what has to happen for it to be worth it. I reply within 1–2 business days.