# Nidone - Mission Alarm Clock — It stops only when you solve

> It stops only when you solve (iPhone/iPad app by Taichi Kimura.)

- Source: https://appshunter.io/ios/app/nidone-mission-alarm-clock/id6815108757 (this page in markdown: same URL + `.md`)
- Developer: [Taichi Kimura](https://appshunter.io/developer/1890691452)
- Category: Utilities, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.1 · 37 MB
- Languages: American English, French (France), German (Germany), Indonesian, Italian, Japanese, Korean, Brazilian Portuguese, Russian, Chinese (Simplified, China) and 3 more
- Released: 2026-10-08
- Data updated: 2026-10-24

## What is Nidone?

You don't remember turning it off, but you overslept anyway.
That's not weak willpower. It's an alarm you can switch off while you're still half asleep.

Nidone rings again 8 seconds after you stop it, for up to an hour.
The X on the lock screen, the side button, the volume buttons: same result.
It only stops when you finish a mission. By the time you've solved a few problems, you're awake.

One alarm is free, forever. No ads.

■ Five missions
- Math: a few math problems, three difficulty levels
- Shake: shake the phone, as many times as you choose
- Memory: tap the tiles in the order they lit up
- Stroop: the word says "red" in blue ink. Answer the color
- QR code: print it and stick it by the sink. It won't stop until you walk over there
Chain up to three. Pick Random and you won't know which one until it rings.

■ Rings on silent
Nidone uses the iOS 26 alarm system. It rings with the silent switch on, during a Focus, and with the app closed.

■ You can always stop it
Sixty seconds into a mission, an X appears. Confirm, and the alarm stops. Wrong answers are fine.

■ Wake up with friends
Swap an invite code with up to 20 friends. They see only your nickname, your profile photo (if you set one), today's alarm time, and when you got up. No public posts. In the morning, open the island map to see who's up and who's still asleep.

■ Records
Streaks and badges. The only person you're compared with is yesterday's you.

■ About Nidone
Nidone is a bird that oversleeps with you. It's asleep too, so it never scolds you.

■ No ads, no tracking
No ads, free or paid. No analytics, no advertising identifier.

■ Pricing
Free: one alarm. Missions, friends and records are all included. No time limit.
Nidone Pro (monthly): as many alarms as you want. For a different time on weekends, or one more for a nap.
- The first 7 days are free. Cancel within them and you pay nothing
- The price for your country is shown in the app before you buy
- Renews automatically. Cancel in Settings > [your name] > Subscriptions on your iPhone
- Deleting the app does not cancel it
- When a canceled subscription ends, only your earliest alarm that's switched on stays. The others are deleted

■ What you need
- An iPhone with iOS 26.1 or later
- Alarm permission (asked on first launch; without it, nothing rings)
- The camera is used only for the QR mission, and motion only for Shake
- The Friends feature is anonymous. No name, email or phone number. Delete your server data in the app's settings anytime

■ Terms of Use and Privacy Policy
Terms of Use (Apple standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://kim1blog.com/en/nidone/privacy/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Nidone Pro | $2.99 | per month |


## Is Nidone safe?

Not enough ratings yet to assess Nidone.

## Is Nidone legit?

Nidone - Mission Alarm Clock has limited verification signals. The AppsHunter Legitimacy Score for Nidone is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.1.0 — 2026-10-12

- Your profile photo now appears on your friends' screens. Only friends you have accepted can see it
- You can now block or report a friend from the button at the right of their row in the friend list
- Unblock someone in Settings, under Blocked users

### 1.0 — 2026-10-09

No release notes.

## Apps similar to Nidone

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| --- | --- | --- | --- |
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## More apps by Taichi Kimura

- [DaySlice – Time Tracker](https://appshunter.io/ios/app/dayslice-time-tracker/id6777043674)

All apps by Taichi Kimura: https://appshunter.io/developer/1890691452

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-24.*