Actio
A daily planner for Android that shows only today’s tasks and turns follow-through into a momentum score. Fully offline, with no ads and no tracking.
- Category
- Mobile application
- Stack
- React Native, Expo, TypeScript
- Year
- 2026
We design and build web and mobile apps that last.
Revryn is a product engineering company. One team takes your product from the first screen to the servers it runs on, and stays with it after launch.
Start a project- Interface
- Product logic
- APIs and integrations
- Data
- Infrastructure
Where we come in
We’re most useful at three moments.
- When a product needs to exist.
- When it has outgrown the way it was built.
- When the roadmap needs more hands than the team has.
Work
Selected work
A selection across web, mobile and backend work.
Snipr
An offline code snippet vault for iOS and Android, built on an on-device SQLite database. It reads code out of screenshots and explains or improves snippets with the developer’s own Gemini, Claude or OpenAI key, kept encrypted on the phone.
Mobile application React Native, Expo, SQLite
Project name
Placeholder. One or two sentences on the system and why it mattered.
Backend system Node.js, PostgreSQL, AWS
Clients
In their words
“We always knew where the project stood. Deadlines were met without us having to chase anyone.”
“Pushkar took the time to understand what we actually needed before writing any code. What we got matched the brief, and it arrived when he said it would.”
“He asked the questions we hadn’t thought of yet, and the product was better for it. Careful work, delivered on schedule.”
“The app felt solid from the first build we tested. When we reported an issue, it was fixed quickly and properly.”
“Clear communication, honest timelines and careful work. I’d bring him in again for the next product.”
Services
Design and engineering, under one roof
The people shaping the product are the people building it. Decisions hold up because nobody has to translate them.
Product design
Research, flows and interfaces, designed next to the engineering so nothing is lost in a handoff.
Discovery / UX and interface design / Prototyping / Design systems
Covers: Interface, Product logic
Web applications
Fast, accessible products for the browser, from customer-facing apps to the internal tools that run a business.
React / Next.js / TypeScript / Accessibility
Covers: Interface, Product logic, APIs and integrations
Mobile applications
Apps for iOS and Android that feel native and keep working offline, sharing logic with the rest of your product.
React Native / Kotlin / Offline support / Store releases
Covers: Interface, Product logic, APIs and integrations, Data
Backend systems
APIs, data models and integrations that stay easy to reason about as the product and the team grow.
Go / Node.js / PostgreSQL / MongoDB
Covers: Product logic, APIs and integrations, Data
Technical architecture
Structural decisions about infrastructure, scale and cost, made early and written down so they can be revisited.
System design / Cloud infrastructure / Code audits / Performance
Covers: APIs and integrations, Data, Infrastructure
Stack
What we build with
Every choice comes down to how it behaves in production: speed, failure modes, and how easy it is to hand over.
Web
Interface
React for interfaces, rendered on the server with Next.js so pages arrive fast and index well. TypeScript on every line.
- ReactPrimaryInterfaces
- Next.jsServer rendering and routing
- TypeScriptTypes from database to UI
- Vue.jsExisting Vue codebases
- Tailwind CSSDesign systems in code
- ViteBuild tooling
Mobile
Interface
React Native for one codebase across iOS and Android. Kotlin when a feature has to be fully native.
- React NativePrimaryCross-platform apps
- ExpoBuilds, updates and releases
- KotlinNative Android
Backend
Product logic and APIs
Go for services that must stay fast and predictable under load. Node.js when a team wants one language from browser to server.
- GoPrimaryCore services and APIs
- Node.jsAPIs and real-time work
- ExpressLightweight HTTP services
- NestJSStructured Node.js services
- FastifyHigh-throughput Node.js APIs
- GraphQLClient-shaped, typed APIs
Databases
Data
PostgreSQL for relational data and anything that needs transactions. MongoDB for document-shaped data that changes often.
- PostgreSQLRelational data, transactions
- MongoDBDocument data
Approach
How a project runs
Five stages, in order. Each one ends with something you can see and check.
01
Understand
We start with the problem, not the feature list. Who uses it, what exists today, and what success looks like.
OutputA written brief both sides agree on
02
Define
We shape the product before building it. Flows, key screens and a technical plan, checked with real users where we can.
OutputPrototype and architecture outline
03
Build
Short cycles with working software at the end of each one, running somewhere you can use it.
OutputWorking software, reviewed as it’s made
04
Refine
Testing, performance, accessibility and edge cases. The unglamorous work that decides whether software holds up.
OutputA product ready for real traffic
05
Ship
Launch is a handover, not an exit. Monitoring, documentation and support after release.
OutputA live product your team can own
About
We’d rather build it right than build it twice.
Most software doesn’t fail loudly. It gets slower to change, harder to trust and more expensive to run.
We work to prevent that from the first week. That means understanding the problem before writing code, keeping systems simple enough to change, and caring about the details people only notice when they’re missing. We want long-term work with teams who care how their product is built, not only how it looks.
Clear over clever
Code, interfaces and decisions should be easy for the next person to follow.
Less, but finished
Fewer features that work completely beat many that almost do.
Built to hand over
Documented, tested and readable. You should never be locked in to us.
Straight answers
If something is a bad idea, a risk or running late, you hear it early.
Contact
Have a product in mind?
Tell us what you’re building. A few lines is enough to start.
Start a conversationWorth including
- What you’re building, and who it’s for
- Where it stands today
- Timing, and anything that’s fixed