DEV Community: Lumi Studio

Free printable Zhuyin (Bopomofo) practice sheets for teaching kids Chinese

Lumi Studio — Wed, 15 Jul 2026 11:26:34 +0000

If you're teaching a child Zhuyin (Bopomofo, ㄅㄆㄇ) — the phonetic system used in Taiwan — repeated writing practice is what makes the 37 symbols stick.

I made a few free, printable web tools (no signup) for parents and teachers:

Practice sheets (田字格 tracing) → https://alice51849.github.io/ios-app-guide/tools/zhuyin-practice-sheet.html
Flashcards → https://alice51849.github.io/ios-app-guide/tools/zhuyin-flashcards.html
Bingo cards for the classroom → https://alice51849.github.io/ios-app-guide/tools/zhuyin-bingo.html
Symbol chart → https://alice51849.github.io/ios-app-guide/tools/zhuyin-bopomofo-chart.html

To learn the symbols through play, Lumi Bopomofo turns all 37 into games — free to download with a one-time lifetime unlock, no ads, no subscription, everything on-device.

Free printable Zhuyin (Bopomofo) practice sheets for teaching kids Chinese

Lumi Studio — Tue, 14 Jul 2026 11:23:40 +0000

If you're teaching a child Zhuyin (Bopomofo, ㄅㄆㄇ) — the phonetic system used in Taiwan — repeated writing practice is what makes the 37 symbols stick.

I made a few free, printable web tools (no signup) for parents and teachers:

Practice sheets (田字格 tracing) → https://alice51849.github.io/ios-app-guide/tools/zhuyin-practice-sheet.html
Flashcards → https://alice51849.github.io/ios-app-guide/tools/zhuyin-flashcards.html
Bingo cards for the classroom → https://alice51849.github.io/ios-app-guide/tools/zhuyin-bingo.html
Symbol chart → https://alice51849.github.io/ios-app-guide/tools/zhuyin-bopomofo-chart.html

To learn the symbols through play, Lumi Bopomofo turns all 37 into games — free to download with a one-time lifetime unlock, no ads, no subscription, everything on-device.

Free printable Zhuyin (Bopomofo) practice sheets for teaching kids Chinese

Lumi Studio — Mon, 13 Jul 2026 12:28:57 +0000

If you're teaching a child Zhuyin (Bopomofo, ㄅㄆㄇ) — the phonetic system used in Taiwan — repeated writing practice is what makes the 37 symbols stick.

I made a few free, printable web tools (no signup) for parents and teachers:

Practice sheets (田字格 tracing) → https://alice51849.github.io/ios-app-guide/tools/zhuyin-practice-sheet.html
Flashcards → https://alice51849.github.io/ios-app-guide/tools/zhuyin-flashcards.html
Bingo cards for the classroom → https://alice51849.github.io/ios-app-guide/tools/zhuyin-bingo.html
Symbol chart → https://alice51849.github.io/ios-app-guide/tools/zhuyin-bopomofo-chart.html

To learn the symbols through play, Lumi Bopomofo turns all 37 into games — free to download with a one-time lifetime unlock, no ads, no subscription, everything on-device.

Make a passport or ID photo at home on your iPhone (no photo booth)

Lumi Studio — Fri, 10 Jul 2026 12:21:16 +0000

You don't need a photo booth for a passport or visa photo. On an iPhone you can shoot a compliant one at home in under a minute — if the app handles the three hard parts: the exact size for your country, a clean white background, and the right head position.

What a compliant photo needs

The correct size (US 2×2 in / 51×51 mm; most countries 35×45 mm; Canada 50×70 mm).
A plain, even background (usually white).
Head height and eye line within range.

I built Snapport for exactly this: country size templates, automatic background replacement, head-position guides, and a print-ready sheet — processed on-device, one-time purchase, no subscription.

Reference: free passport-size table by country → https://alice51849.github.io/ios-app-guide/data/passport-photo-sizes.html

Make a passport or ID photo at home on your iPhone (no photo booth)

Lumi Studio — Fri, 10 Jul 2026 08:31:38 +0000

What a compliant photo needs

The correct size (US 2×2 in / 51×51 mm; most countries 35×45 mm; Canada 50×70 mm).
A plain, even background (usually white).
Head height and eye line within range.

Reference: free passport-size table by country → https://alice51849.github.io/ios-app-guide/data/passport-photo-sizes.html

Make a passport or ID photo at home on your iPhone (no photo booth)

Lumi Studio — Fri, 10 Jul 2026 01:11:05 +0000

What a compliant photo needs

The correct size (US 2×2 in / 51×51 mm; most countries 35×45 mm; Canada 50×70 mm).
A plain, even background (usually white).
Head height and eye line within range.

Reference: free passport-size table by country → https://alice51849.github.io/ios-app-guide/data/passport-photo-sizes.html

Make a passport or ID photo at home on your iPhone (no photo booth)

Lumi Studio — Wed, 08 Jul 2026 17:33:08 +0000

What a compliant photo needs

The correct size (US 2×2 in / 51×51 mm; most countries 35×45 mm; Canada 50×70 mm).
A plain, even background (usually white).
Head height and eye line within range.

Reference: free passport-size table by country → https://alice51849.github.io/ios-app-guide/data/passport-photo-sizes.html

I built a family of pay-once iOS apps — no subscriptions, no ads, on-device

Lumi Studio — Wed, 08 Jul 2026 17:29:38 +0000

I'm an indie developer, and I made one rule for everything I ship: one-time purchase, no subscriptions, no ads, and your data stays on your device. No monthly fees, no accounts, no tracking.

Here's the lineup so far — all for iPhone.

🗂️ Productivity & documents

ScanTo Pro — scan to a searchable PDF with OCR, lock docs with Face ID, works offline.
CV Desk — instant ATS résumé score + recruiter-ready templates.
G+Money — convert currencies and log every expense in one tap, offline, no bank linking.
HoursTag — see what a purchase really costs in hours of your life.
LockHour Pro — block the apps that steal your focus, one tap.
Mochi — cute, cozy checklists with a satisfying tap to complete.

📷 Photo & privacy

Unblurry — AI super-resolution sharpens & upscales photos, entirely on-device.
PicClear — find duplicate photos & huge videos, free up storage fast.
Snapport — take a compliant passport/ID photo at home in 30 seconds.
PhotoCream — 100+ real film looks, grain & light leaks.

🌙 Health & calm

Cyca — private period & cycle tracking, on-device.
Sereno — a sound machine for sleep & focus: mixable white/brown noise, offline.

🧒 Kids & learning

Lumi Bopomofo — learn Zhuyin (Bopomofo) through games.
Lumi Letters Pro — playful ABC phonics & tracing.
Lumi Math Planet — early math adventures.
Lumi Weather — a child-friendly forecast.

Why pay-once?

Subscription fatigue is real. For most everyday tasks, a one-time purchase does the job without an open-ended cost — and keeping everything on-device means there's no account to leak and nothing to cancel. That's the whole idea.

DEV Community: Lumi Studio

Free printable Zhuyin (Bopomofo) practice sheets for teaching kids Chinese

Free printable Zhuyin (Bopomofo) practice sheets for teaching kids Chinese

Free printable Zhuyin (Bopomofo) practice sheets for teaching kids Chinese

Make a passport or ID photo at home on your iPhone (no photo booth)

Make a passport or ID photo at home on your iPhone (no photo booth)

Make a passport or ID photo at home on your iPhone (no photo booth)

Make a passport or ID photo at home on your iPhone (no photo booth)

I built a family of pay-once iOS apps — no subscriptions, no ads, on-device

🗂️ Productivity & documents

📷 Photo & privacy

🌙 Health & calm

🧒 Kids & learning

Why pay-once?

More (and a pay-once vs subscription cost breakdown): https://apps.apple.com/developer/id1136144960