# Sleeper: sleep cycle alarm — Sleep cycle calculator

> Sleep cycle calculator (iPhone/iPad app by Baltasar Jimenez.)

- Source: https://appshunter.io/ios/app/sleeper-sleep-cycle-alarm/id6820568314 (this page in markdown: same URL + `.md`)
- Developer: [Baltasar Jimenez](https://appshunter.io/developer/6819301464)
- Category: Health & Fitness, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 35 MB
- Languages: American English, Dutch, French (France), German (Germany), Indonesian, Italian, Japanese, Korean, Polish, European Portuguese and 3 more
- Released: 2026-11-07
- Data updated: 2026-11-10

## What is Sleeper?

We sleep in cycles of about 90 minutes. Waking at the end of one shows: you get up without dragging yourself out of bed. Waking in the middle of one shows too. Sleeper tells you when the alarm should ring, and sets it.

A DEPARTURE BOARD FOR YOUR NIGHT
Pick when you go to bed and Sleeper shows your wake-up times like a station board: each row with its time, its cycles and the hours of sleep. The five-cycle row is lit. It counts 15 minutes to fall asleep, because nobody drops off instantly.

ONE TAP AND THE ALARM IS SET
Tap a time and Sleeper creates the alarm in the system. The row is stamped ALARM SET, so you never have to wonder whether you already did it. Got it wrong? Tap again and it is gone.

WHEN TO GO TO BED
Need to be up at 7:00 tomorrow? Give it the time and it tells you when to go to bed. Pick one and it sets the morning alarm and a reminder to head to bed.

12 OR 24 HOURS, LIKE YOUR PHONE
Times show in the format you already use. And if you have system animations turned off, the flaps change without flipping.

PRO, ONE PAYMENT
A 20-minute power nap or one full cycle. Your own rhythm: how long you take to fall asleep and how long your cycle lasts. And widgets for the home and lock screen with tonight's bedtimes. One payment, forever. No subscription.

YOUR DATA STAYS ON YOUR PHONE
No account, no email, no ads and no tracking. Sleeper does not use the microphone or the sensors, and needs no internet to work anything out.

WHAT IT IS NOT
Sleeper does not measure your sleep and is not a medical device. It does one simple sum, properly, and turns it into an alarm.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Sleeper Pro | $1.99 | one-time |


## Is Sleeper safe?

Not enough ratings yet to assess Sleeper.

## Is Sleeper legit?

Sleeper: sleep cycle alarm appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Sleeper is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0.8 — 2026-11-07

No release notes.

## More apps by Baltasar Jimenez

- [Chroma: Color Year in Pixels](https://appshunter.io/ios/app/chroma-color-year-in-pixels/id6819301462)
- [FlowTime: Pomodoro Focus Timer](https://appshunter.io/ios/app/flowtime-pomodoro-focus-timer/id6819302003)
- [MoodTraker: Daily Mood Tracker](https://appshunter.io/ios/app/moodtraker-daily-mood-tracker/id6819302341)
- [Quilt: Habit Tracker](https://appshunter.io/ios/app/quilt-habit-tracker/id6819302953)

All apps by Baltasar Jimenez: https://appshunter.io/developer/6819301464

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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 2026-11-10.*