# Sleep Guard vs WaveFast

The clearest difference is in-app purchases: Sleep Guard at none against WaveFast's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. WaveFast sells 1 one-off in-app purchase. Sleep Guard asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 18, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Sleep Guard | WaveFast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/wavefast-fasting-tracker/id6764770817/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | — | Free |
| Size | 1 MB | 20 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [Joshua Pusch](https://appshunter.io/developer/1653472745) | [瑞华 张](https://appshunter.io/developer/1608130007) |

## What reviewers say

### Sleep Guard

[App page](https://appshunter.io/ios/app/sleep-guard/id6444267402)

**In-app purchases:** none


### WaveFast

[App page](https://appshunter.io/ios/app/wavefast-fasting-tracker/id6764770817)

Track your intermittent fasting with a visually engaging and user-friendly interface. This app offers a one-time purchase, no subscriptions, and prioritizes user privacy by storing all data locally. Stay motivated with fluid animations and smart notifications.

**Highlights:** Mesmerizing fluid wave animation, Dynamic Island & Live Activities integration, History and streak tracking, Customizable water themes, Body status insights, Smart notifications, Privacy-focused local data storage

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WaveFast Pro | $4.99 | one-time |


## Frequently asked questions

### Is Sleep Guard free?

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

### Is WaveFast free?

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

### Do Sleep Guard or WaveFast have ads?

Neither Sleep Guard nor WaveFast shows ads.

### Which is updated more often, Sleep Guard or WaveFast?

Sleep Guard ships an update every 3 weeks, and WaveFast every 3 weeks. Most recently, Sleep Guard was updated on September 18, 2026 and WaveFast 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.*