Tristonia
The catalogue

Apps with character.

Eight apps so far. Each one started as a problem I couldn't shake, and ended up as something I'd be proud to install on my own phone.

Cartridge
Cartridge
Android · Game Collection
01 / 09

"Your game shelf, lit up like a shop."

Cartridge turns the games on your shelves into a late-night game shop on your phone. Scan the barcode on the back of a case and it finds the game, its platform and its box art, then stands it under that platform's neon sign with a spine that looks like the real thing. No barcode? Take a photo of the box or cartridge and it reads the title for you. Loose cartridges stand face out. Tap a game to track whether you've beaten it, what condition it's in and what you paid.

Inside the build

Barcode scanning on the phone, plus a photo reader for boxes and cartridges with no barcode

Over 60 platforms, from the ZX Spectrum, Amstrad and Atari 2600 to PS5 and Switch 2

Spines drawn in code with the real platform banner and true-to-life case sizes

Loose cartridges drawn as the cart itself, with the box art or your own photo on the label

Play status, condition, price paid and a wishlist, with a spreadsheet export

Completely free. No ads, no purchases, no account, and your collection stays on your phone

Big Heads
Big Heads
Android · Vinyl Figure Collection · Coming soon
02 / 09

"Your vinyl figures, in a lit display cabinet."

Big Heads turns the figures on your shelves into a glass display cabinet on your phone. Scan the barcode on the bottom of a box and it finds the figure, its series and its box number, grabs a photo of the box and stands it face out under its franchise's brass plaque. Boxes keep their real proportions, so the big ones tower over the standard ones. Tap a box to track its stickers, its condition, what you paid and what it's worth now.

Inside the build

Barcode scanning on the phone, plus search by name or add it by hand

A walnut cabinet drawn in code, with glass shelves and warm LED strips

Boxes at their real sizes, from keychains to the big 10 inch ones

Stickers for chase, exclusive, vaulted, glow, flocked and more

What you paid, what it's worth now and a wishlist, with a spreadsheet export

Completely free. No ads, no purchases, no account, and your collection stays on your phone

Coming soon to Google Play Privacy Policy
Kudos Cards
Kudos Cards
Android · Team Rewards
03 / 09

"Get things done. Collect the cards."

Kudos Cards is a task board for a team that pays out. Finish a task and the points go to whoever did the work. Earn enough and you collect a Bronze, Silver or Gold card, and each card opens up perks your team chooses, like a free coffee or a training course.

Inside the build

Five-stage board: new request, refinement, ready, in review and done, with reviewers approving the work

Points for every task, bonuses for milestones hit on time, weekly kudos and team sprint goals

Bronze, Silver and Gold cards drawn in code, with a metal shine that follows the tilt of your phone

Perks set by the team's admin, redeemed with a code and handed over in person

Share a new card or a win to any app on your phone

Completely free. No ads, no account, no sign-in, and your team's data stays on the device

Epafi
Epafi
Android · Keep in Touch
04 / 09

"A kind little nudge to keep in touch."

Epafi (επαφή, Greek for contact, or touch) is for the people you'd hate to drift from. Put them in circles like family or old friends, each with its own rhythm, and Epafi keeps a gentle eye on how long it's been. Once a day at most, it tells you who might like a hello, and saying hello is one tap away.

Inside the build

Circles with their own rhythm, and a ring on each person that fills as their time comes round

One-tap call, text, WhatsApp, Signal or Telegram, and it asks if you caught up when you come back

A daily nudge with "Caught up" and "Later this week" right on the notification

Birthdays from your contacts, reminded three days before and on the day

A home screen widget and a backup file you can lock with a passphrase

Completely free. No ads, no account, and no internet access, so your people never leave your phone

Shelfie
Shelfie
Android · Book Tracker
05 / 09

"Your real bookshelf, on your phone."

Shelfie turns the books on your shelves into a cosy bookcase on your phone. Scan the barcode on the back of a book and it slides onto the shelf with its own spine, coloured from its cover, sized by its page count. Tap a spine to take the book down, mark it as read and keep a few notes.

Inside the build

Barcode scanning that runs on your phone, with type-it-in for books without one

Four bookcases drawn in code: classic wooden, floating shelves, library and crates

Every spine is generated: colour from the cover, height and thickness from the book

Wrong cover? Pick another from other editions, or fix the title and author

Separate bookcases, sorting by colour or height, and a spreadsheet export

Completely free. No ads, no purchases, no account, and your library stays on your phone

Chockablock
Chockablock
Android · Block Puzzle
06 / 09

"A calm 8×8 block puzzle — no timers, play offline."

Chockablock is a clean, relaxing block puzzle on a classic 8×8 grid. Drag bright candy-shell pieces onto the warm cream board, fill full rows or columns to clear them, and chain clears together for big combo scores. No timers, no pressure — the round only ends when nothing fits.

Inside the build

Combo multiplier — clear on consecutive moves to multiply your line bonus

Punchy line-clear callouts that celebrate every double, triple and combo streak

Hold slot to stash a piece, plus undo to rescue a tricky move

Play Games achievements and leaderboards to chase

Colour-blind-friendly candy palette, haptics, and fully playable offline

Free to play — one optional Pro purchase removes ads, no subscriptions

Decision Spinner
Decision Spinner
Android · Royal Edition
07 / 09

"The game-show wheel for everyday choices."

Can't decide what to eat? Who's washing up? Where to go next weekend? Decision Spinner is a spinning wheel with real game-show physics. Tap it, watch it spin, listen to the ticks slow down, and let it make the call.

Inside the build

Six hand-crafted themes: Game Show, Roulette, Alloy Wheel, Carnival, Cartwheel, Minimal

Real game-show physics with a flapper peg that ticks every slice

Wood-on-wood tick sound and a C-major arpeggio win chime

220-particle confetti burst in the theme's palette

Weight options 1× to 5×, tournament mode, history of the last 25 winners

No accounts, no tracking. Everything stays on your device

ShrinkRay
ShrinkRay
Android · On-device AI
08 / 09

"Big tasks, shrunk down to doable."

Big tasks have a way of feeling overwhelming before you've even started. ShrinkRay's on-device AI breaks any task into smaller, doable steps: say what you need to do, and it maps out a clear path from start to finish, no cloud or accounts required.

Inside the build

Handles anything from big projects to small daily chores

Tap any step to break it down even smaller

Runs fully on your phone, private and offline

Free breakdowns daily, optional one-time Pro unlock, no subscription

Built-in content safety filters

No tracking. Your data never leaves your device

Trivia Together
Trivia Together
Android · Closed Testing
09 / 09

"The 1-v-1 trivia duel you play on your own time."

Trivia night doesn't have to mean everyone online at the same time. Trivia Together turns head-to-head quizzing into a game you play on your own schedule. Spin the wheel for a category, answer your questions, then pass the turn to your opponent, whether that's a random rival or a friend you've challenged with a code.

Inside the build

Asynchronous 1-v-1 duels: take your turn whenever it suits you, no waiting on your opponent

Spin the wheel across six categories: Science, History, Sport, Geography, Entertainment, and more

Earn coins and unlock achievements: win streaks, perfect matches, category mastery

Spend coins in the shop on power-ups like Extra Time, 50/50, and Skip

Track your level and stats, then climb the global leaderboard

Solo practice works fully offline, no sign-in required

Closed testing on Google Play Privacy Policy
In the workshop

More apps,
in good time.

New ideas are always brewing. They come out when they're ready, and not a moment before.