A 16-pad sampler with a granular engine underneath.
zhiii0x
> Solo developer in Taipei, shipping odd apps that chase more interesting design and solve oddly specific problems — on a mission to build 100.
mission · 100 apps28/100
About
I'm a solo developer and designer based in Taipei. I build and ship small apps across whatever catches my interest — music tools, health trackers, productivity utilities, games, and a fair share of oddly specific ones. Design, code, ship; repeat.
Everything here is made by one person. If something I built was useful to you, or you just want to say hi, I'd love to hear from you.
Projects
Music7
SpellSynth is a playable love-letter to the 1978 spelling toy that taught a generation to read — rebuilt for iPhone, iPad, and Mac, with five game modes, a c…
A chord chart app for practicing musicians.
PocketTone is a hand-drawn, retro pocket synthesizer you can play anywhere.
A native Mac chord-chart app for practicing musicians — lead sheets, ChordPro, MusicXML, and a backing-track player, with a source-list sidebar and the keyboard shortcuts you'd expect.
A drum machine in the round — build beats on a glowing mandala of six concentric rings instead of a grid.
A pocket lo-fi studio where every touch is musical — smooth chords, warm synths, and share-ready ink-wash visuals, no theory required.
Audio3
SoundMess Lab is a careful, offline sound measurement tool for iPhone and iPad.
A free, open-source native macOS multitrack recorder — capture your mic, system audio, and each chosen app to separate, time-synced WAV stems in one click, plus a ready-to-open Reaper project.
A free-beta Mac audio plugin that runs your sound through broken transmission paths — telephone grit, console crush, AM static, voice-chat dropouts, and cassette wobble.
Lifestyle3
Acro Reef
iOSAcro is the reef tracker for SPS keepers who care about every frag.
A logbook for places that feel wrong.
Buying a horse is a five-figure decision made on a few paragraphs written by the seller.
Productivity3
Pocketext turns your iPhone into a powerful document scanner with built-in OCR text recognition.
One person speaks; Avoce turns it into live subtitles — view the transcript, or translate it for your audience, right in the browser.
A local, offline macOS menu-bar dictation app for Mandarin and English — hold a key, speak, and your words are transcribed and tidied up entirely on-device, then inserted at your cursor.
Health & Fitness2
Remembering your medication shouldn't be hard. GoodPill makes it simple.
Curve is a private notebook for diabetic pets — today, purpose-built for cats.
Photo & Video2
Turn any video into multilingual subtitles — all in one app.
TitleCue turns Final Cut Pro titles and captions into clean subtitle files — and brings them back.
Business2
Most OCR apps give you a wall of text. Pocketext gives you usable data.
A free attendance and payroll system for Taiwan small businesses — GPS clock-in, leave, overtime, and labor insurance, all auto-calculated.
Games2
Chessnook is a cozy chess club for your pocket — a beginner-friendly, fully offline iPhone and iPad app for Chinese chess (Xiangqi), Banqi (Dark Chess / Flip…
A neon rhythm game scored to original synthwave — every tap plays the song.
Entertainment1
Who's your K-pop twin?
Developer Tools1
AppRoster is a field guide to your App Store reviews — across every country, every storefront, from one iPhone.
Education1
LumaCard is a multi-language learning app for kids 4-9.
Graphics &
Design1
See new lighting in your room before you spend a cent — drop virtual fixtures onto real walls in AR and dial in the exact warmth and brightness.
Blog
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