# Wristle vs Sleep Tracker

The clearest difference is iOS requirement: Wristle at 16.6 against Sleep Tracker's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Wristle ships an update every 9 days, Sleep Tracker every 6 days. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Wristle | Sleep Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/wristle-buzz-alerts/id6801050469/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 6 days** |
| Monetization | Free | — |
| Size | 3 MB | 24 MB |
| Requires iOS | **16.6** | 18.0 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Dominyko, MB](https://appshunter.io/developer/6801050471) | [Sven Kraln](https://appshunter.io/developer/6816678493) |

## What reviewers say

### Wristle

[App page](https://appshunter.io/ios/app/wristle-buzz-alerts/id6801050469)

This app provides real-time audio feedback and buzz alerts for your heart rate zones and pace during runs. It allows you to set custom goals and receive subtle vibrations to guide your performance without needing to look at a screen.

**Highlights:** Real-time pace and heart rate zone alerts, Customizable buzz patterns, Steer by feel with subtle vibrations, No second screen required, Detailed activity logging, Tap controls for activity management

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

**In-app purchases:** none


### Sleep Tracker

[App page](https://appshunter.io/ios/app/sleep-tracker-cernidia/id6816678341)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Wristle free?

Wristle is free to download, with no in-app purchases.

### Is Sleep Tracker free?

Sleep Tracker is free to download, with no in-app purchases.

### Do Wristle or Sleep Tracker have ads?

Neither Wristle nor Sleep Tracker shows ads.

### Which is updated more often, Wristle or Sleep Tracker?

Wristle ships an update every 9 days, and Sleep Tracker every 6 days. Most recently, Wristle was updated on October 17, 2026 and Sleep Tracker on October 16, 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.*