Independent app studio
Native apps that respect your privacy and time.
Zavrelapps makes native software for Mac, iPhone, iPad and Apple Watch. No accounts, no ads, no tracking. Your notes, files and passwords stay yours.
Twelve apps. One way of building them.
Featured · Public beta
NotaBene
A native notebook with rich editing, PDF annotation, Apple Pencil, scanning and instant search.
- Version history for every note, by time and device
- Tasks with due dates, linked to Calendar and Reminders
- Search inside PDFs, images and Office files
- Syncs through your own iCloud. No sign-up, no ads
Apps
Each one does a single job well, and each has its own page with the details.
On the App StorePuťovka
A trip log for Czech company cars. It records each drive, asks business or personal, and prepares the month-end trip and fuel report for your employer.
In Czech
putovka.app →On the App StoreSilentBox
An encrypted vault for photos, scans and documents. Encryption happens on your device, and no one else holds the key. Pay once, no subscription.
silentbox.zavrel.net →TestFlight betaNotaBene
A native notebook with rich editing, PDF annotation, Apple Pencil, scanning and instant search. No account, no ads, no subscription.
notabene.zavrel.net →In developmentLapel
Meeting recording with the microphones you already wear. iPhone and Apple Watch record together, and transcription runs on the device.
Website coming laterIn developmentPaceDay
A step tracker that measures your steps against the pace of your day and a weekly budget, not rings. It nudges you only when you’re behind and your calendar is free.
Website coming laterIn developmentParafa
Signs PDFs with a qualified certificate, as signatures Adobe Acrobat and the EU validators accept, without Acrobat. Batch signing, signature checks and long-term validation.
Website coming laterIn developmentSilentKey
An end-to-end encrypted password manager. One core in Rust, native on Mac and iPhone, and a server that only ever holds encrypted data.
silentkey.zavrel.net →In developmentSilentList
An outliner and a task manager in one, kept with the keyboard. Smart syntax for dates, tags and priorities, and every command a key away.
silentlist.zavrel.net →In developmentSilentPage
A notebook, a PDF editor and a scanner in one. Write with Apple Pencil, fill and sign PDFs where they live, redact for real, and scan pages that stay searchable.
Website coming laterGames
My first iPhone games, remastered in 2026. Each one carries the original inside.
On the App StoreCatch The Snake
Tap the pieces away and lower the sleeping snake into its cage without waking it. The 2026 remaster brings eighteen physics puzzles, and carries the original 2016 game inside.
App Store →On the App StoreKarkulka
Little Red Riding Hood picks flowers on the way to Grandma’s and keeps out of the wolf’s sight. The 2026 remaster brings six chapters and eighteen levels, and carries the original 2015 game inside.
App Store →On the App StoreZombie Run
A dark maze, a flashlight and the dead listening for you. Rescue the survivors and find the way out. The 2026 remaster, in beta, carries the original 2016 game inside.
App Store →Four rules I don’t bend.
Native, not wrapped
Built with each platform’s own tools, so the apps feel at home and work with widgets, Shortcuts, Siri and Spotlight.
Private by design
Data lives on your device or in your own iCloud. Where a server is needed, it only stores what it can’t read.
No accounts, no ads
Open the app and start. No sign-up, no tracking, and a one-time price instead of a subscription wherever possible.
Your data can leave
Export to plain files, Markdown, PDF or a documented format at any time. Nobody is kept by keeping their data.
A small studio, on purpose.
Zavrelapps is the one-person studio of Jan Zavrel. Every app starts from a problem in my own day, then gets built, used and refined until it disappears into the background.
One developer, a handful of apps, and the time to get each of them right.
Help shape what ships next.
NotaBene is open for beta testers now. Its page says how to join.