# Sleke vs SleepStack

The clearest difference is update cadence: Sleke at every 3 days against SleepStack's every 10 days. SleepStack's advantage is iOS requirement (18.0 vs 26.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Sleke sells 3 in-app purchases, starting at $0.99 per month and SleepStack sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Sleke ships an update every 3 days, SleepStack every 10 days. The most recent releases landed on October 5, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Sleke | SleepStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (4 ratings)](https://appshunter.io/ios/app/sleepstack-sleep-protocol/id6760767864/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 10 days |
| Monetization | Freemium | Free with in-app purchases |
| Size | 16 MB | 49 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Dasun Tharanga](https://appshunter.io/developer/1549628513) | [NUNE LLC](https://appshunter.io/developer/1838850912) |

## What reviewers say

### Sleke

[App page](https://appshunter.io/ios/app/sleke-sleep-cycle-calculator/id6754694370)

This smart alarm helps you wake up feeling refreshed by identifying the optimal moment within your sleep cycle. Simply set your desired wake-up window or number of sleep cycles, and it adjusts to your body's natural rhythm for smoother mornings.

**Highlights:** Smart alarm based on sleep cycles, Customizable wake-up time, Adjusts to body's rhythm, Wake up without grogginess, Simple interface

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sleke Premium Monthly | $0.99 | per month |
| Sleke Premium | $5.99 | one-time |
| Sleke Premium Family | $9.99 | one-time |


### SleepStack

[App page](https://appshunter.io/ios/app/sleepstack-sleep-protocol/id6760767864)

This app helps you build better sleep habits with guided routines, sleep tracking, and relaxation techniques. It monitors your sleep environment and provides feedback to improve your rest and morning recovery. Protect your sleep from phone distractions with app blocking features.

**Highlights:** Personalized bedtime routine builder, Sleep Score and insights tracking, Guided relaxation techniques, App blocking for sleep protection, Sleep environment monitoring, Morning energy and recovery feedback, Gamified sleep habit tracking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SleepStack Pro weekly | $4.99 | per 7 days |
| SleepStack Pro Yearly | $29.99 | per year |
| SleepStack Yearly | $59.99 | per year |


## Frequently asked questions

### Is Sleke free?

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

### Is SleepStack free?

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

### Do Sleke or SleepStack have ads?

Neither Sleke nor SleepStack shows ads.

### Which is updated more often, Sleke or SleepStack?

Sleke ships an update every 3 days, and SleepStack every 10 days. Most recently, Sleke was updated on October 5, 2026 and SleepStack on October 3, 2026.

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