Lumi Bopomofo — Help & FAQ

What Lumi Bopomofo does

Lumi Bopomofo is a gentle, playful way for young children to learn the Bopomofo (Zhuyin) phonetic system.

Learn by playing

Collect & achieve

Parent-friendly

Help your child take a joyful first step into Bopomofo on Lumi's planet!

What's included

• Feed the Friends - listen and pick the right symbol
• Magic Tracing - trace each stroke with your finger
• Tone Coaster - watch the cart ride to learn the four tones
• Sound Train - blend initial + medial + final into a syllable
• 37 adorable Bopomofo friends to collect
• Earn stars and achievement badges
• Hidden characters to discover!
• Completely ad-free
• Collects no personal data, no sign-up
• Progress stored only on the device

At a glance

Frequently asked questions

Do I need to create an account?

No. The listing states there is no account, sign-up or login — you can start using the app straight after installing it.

Are there ads?

No. The listing states the app contains no advertising.

How do I delete the app and everything it stored?

Touch and hold the app icon → Remove App → Delete App. Deleting an iOS app removes its sandbox — the documents and settings it kept on the device go with it, so export anything you want to keep first. What the app stores and where is described in our privacy policy.

How do I make sure I'm on the latest version?

Open the App Store, tap your profile picture, and pull down to refresh the pending-updates list. If the app appears there, tap Update. Turning on Settings → App Store → App Updates keeps it automatic.

How do I stop my child making purchases by accident?

iOS can block them at the system level, which is stronger than anything an app can do: Settings → Screen Time → Content & Privacy Restrictions → iTunes & App Store Purchases → In-app Purchases → Don't Allow. Set a Screen Time passcode that is different from the device passcode so it can't be undone by the child.

How do I keep my child inside one app?

Use Guided Access: Settings → Accessibility → Guided Access, turn it on and set a passcode. Then open the app and triple-click the side button to lock the device into it. Triple-click again and enter the passcode to leave.

Which devices and iOS version does Lumi Bopomofo need?

See the App Store product page — the Information section there is always the authoritative, up-to-date answer for compatibility, size and languages.

Troubleshooting

The app won't open, or closes straight away

Force quit it first: swipe up from the bottom of the screen and pause, then swipe the app's card away. Reopen it. If it still closes, restart the device — that clears the majority of one-off launch failures.

It feels slow, or freezes on a big job

Check free storage in Settings → General → iPhone Storage. iOS gets unpredictable below roughly 1 GB free, and anything that writes files (exports, scans, image processing) is the first thing to suffer. Also close other apps that are working in the background.

Something looks broken after an update

Update iOS itself (Settings → General → Software Update), then update the app. A mismatch between an old iOS and a new build is a common cause of layout or feature glitches.

Last resort: reinstall

Export anything you want to keep, delete the app, then reinstall it from the App Store's Purchased list. Paid unlocks belong to your Apple Account and survive a reinstall; data stored only on the device does not.

Still stuck? Email us

Write to hourstag.app@gmail.com. To get a useful answer on the first reply, include: your device model (Settings → General → About), your iOS version, the app version, and what you tapped right before the problem appeared. Screenshots or a screen recording help a lot.