# FlexiAlarm vs SleepHack

The clearest difference is price: SleepHack at Free against FlexiAlarm's $5.99. SleepHack also leads on review sentiment (100% vs 75%) and iOS requirement (15.1 vs 26.2). FlexiAlarm's advantage is in-app purchases (none vs 8) and ads (none vs shown). On rating, ratings volume, update cadence and device support there is nothing between them.

SleepHack is free to download; FlexiAlarm costs $5.99 up front. SleepHack sells 8 in-app purchases, starting at $4.99 per 7 days. FlexiAlarm asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for FlexiAlarm against 5.0 for SleepHack. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews are what separate them: 75% of FlexiAlarm's written reviews are positive against 100% of SleepHack's.

FlexiAlarm ships an update every 5 days, SleepHack every 6 days. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | FlexiAlarm | SleepHack |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/flexialarm-alarm-clock/id6502886443/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/sleephack-hack-your-sleep/id6756525549/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 6 days |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#40** | — |
| Size | 37 MB | 112 MB |
| Requires iOS | 26.2 | **15.1** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Nathan Woolmore](https://appshunter.io/developer/1530667458) | [SMB Studio LLC](https://appshunter.io/developer/1169078419) |

## What reviewers say

### FlexiAlarm

[App page](https://appshunter.io/ios/app/flexialarm-alarm-clock/id6502886443)

**Currently charting:** #40 Top Paid · Health & Fitness (US App Store)

This app offers intelligent wake-up features for Apple Watch and flexible alarm scheduling for iPhone. Customize wake windows, vibration sensitivity, and alarm repetition to fit your routine. It also provides sleep statistics and calendar event alarms.

**Highlights:** Intelligent Smart Wake on Apple Watch, Flexible alarm schedules on iPhone, Customizable wake window sensitivity, Calendar event alarms, Sleep statistics and insights (requires Apple Watch), Power Nap Mode, Lucid Dream Alarm Mode

**Features:** Apple Watch app, iPhone Duo support

**In-app purchases:** none


### SleepHack

[App page](https://appshunter.io/ios/app/sleephack-hack-your-sleep/id6756525549)

This app uses adaptive binaural frequencies and an intelligent sleep engine to optimize your sleep cycles for deeper rest and improved performance. It offers performance-first sleep tracking and a smart alarm to wake you at the optimal moment.

**Highlights:** Adaptive binaural frequencies, Intelligent sleep engine, Performance-first sleep tracking, Smart alarm, Deep sleep enhancement modes

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Pro Weekly | $6.99 | per 7 days |
| Pro Monthly | $9.99 | per month |
| Pro Annual | $19.99 | per year |
| Pro Annual | $29.99 | per year |
| Pro Annual | $39.99 | per year |
| Pro Annual | $39.99 | per year |
| Lifetime Access | Free | one-time |


## Frequently asked questions

### Is FlexiAlarm free?

FlexiAlarm costs $5.99, with no in-app purchases.

### Is SleepHack free?

SleepHack is free to download, with in-app purchases available.

### Which has better reviews, FlexiAlarm or SleepHack?

FlexiAlarm and SleepHack are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.

### Do FlexiAlarm or SleepHack have ads?

SleepHack shows ads; FlexiAlarm does not.

### Which is updated more often, FlexiAlarm or SleepHack?

FlexiAlarm ships an update every 5 days, and SleepHack every 6 days. Most recently, FlexiAlarm was updated on November 8, 2026 and SleepHack on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*