# AMATERAS \| Smart Alarm — Wake gently from light sleep

> Wake gently from light sleep (iPhone/iPad app by Kairi Narita.)

- Source: https://appshunter.io/ios/app/amateras-smart-alarm/id6816400629 (this page in markdown: same URL + `.md`)
- Developer: [Kairi Narita](https://appshunter.io/developer/6808281698)
- Category: Health & Fitness, Lifestyle
- Price: Free
- Age rating: 4+
- Requires: iOS 16.4 · 66 MB
- Languages: American English, French (France), German (Germany), Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2026-09-30
- Data updated: 2026-10-24

## What is AMATERAS | Smart Alarm?

Set a time, tap Sleep. That's it.
AMATERAS estimates when you're stirring from your movement and wakes you up to 5 minutes early.
• Built to ring even if you forget or your phone is on silent (device settings or battery savers may still block it — run a test alarm first)
• Swipe to stop
• Re-sleep guard: rings again at your set time if you stop early (picking up your phone cancels it)
• Estimated sleep depth chart and rough habit guides (estimated)
• 11 alarm tunes; "Auto" picks one to match your estimated sleep state
• Free, with no ads and no in-app purchases; no account; records stay on your device (sent only if you turn on "Help improve the App")
Estimated from body movement. Not a medical device.
Terms of Use (in addition to Apple's standard EULA): https://amateras.amaterasu-vocab.com/terms
Privacy Policy: https://amateras.amaterasu-vocab.com/privacy

## Is AMATERAS | Smart Alarm safe?

Not enough ratings yet to assess AMATERAS | Smart Alarm.

## Is AMATERAS | Smart Alarm legit?

AMATERAS | Smart Alarm appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for AMATERAS | Smart Alarm is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.0.6 — 2026-10-22

• Asks before starting when your alarm is far away, or when you start without an alarm during the day
• Records that look like time spent awake (e.g. phone carried during the day) are no longer counted in sleep averages or habits
• On iOS 18 and earlier, warns when the alarm volume is low

### 1.0.5 — 2026-10-20

• Fixed an issue where morning mood was sometimes missing from shared data

### 1.0.4 — 2026-10-13

Minor corrections

### 1.0.3 — 2026-10-11

• Learns from past nights when your sleep tends to be lighter, and favors waking you around that time within your wake-up window (works after 5 or more nights of records)
• Added "Help improve the App" (optional, off by default). Only when you turn it on, records are sent in a form that does not identify you. You can turn it off anytime in Settings and request deletion of sent data

### 1.0.2 — 2026-10-09

- Fixed an issue where the alarm could stop while ringing.
- When media volume is low, the alarm now rings at ringer volume.
- Improved detection of small movements on soft bedding.
- Night details now show lighter-sleep periods and night sounds (estimated).
- If you end tracking after your set time, the remaining alarm no longer rings.

## More apps by Kairi Narita

- [TENRYU \| 航空学生 適性検査トレーニング](https://appshunter.io/ios/app/tenryu/id6808281696)
- [ぴたトリ \| 写真切り取りツール](https://appshunter.io/ios/app/id6816380347)
- [LUMINA \| 航空管制官 適性試験対策](https://appshunter.io/ios/app/lumina/id6820125623)

All apps by Kairi Narita: https://appshunter.io/developer/6808281698

---

*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.*