# Sleep App：Sleep Tracker, Sound vs SleepFlow Sleep Tracker

The clearest difference is update cadence: SleepFlow Sleep Tracker at daily against Sleep App：Sleep Tracker, Sound's monthly. Sleep App：Sleep Tracker, Sound's advantage is iOS requirement (15.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

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

Sleep App：Sleep Tracker, Sound ships an update monthly, SleepFlow Sleep Tracker daily. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sleep App：Sleep Tracker, Sound | SleepFlow Sleep Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sleepflow-sleep-tracker/id6757989734/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Daily** |
| Monetization | — | Free |
| Size | 11 MB | 4 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PORTSUN BIOTECH LIMITED](https://appshunter.io/developer/1700670617) | [Fabio Mota](https://appshunter.io/developer/1866114975) |

## What reviewers say

### Sleep App：Sleep Tracker, Sound

[App page](https://appshunter.io/ios/app/sleep-appsleep-tracker-sound/id6756601144)

**Features:** macOS Compatibility

**In-app purchases:** none


### SleepFlow Sleep Tracker

[App page](https://appshunter.io/ios/app/sleepflow-sleep-tracker/id6757989734)

Understand your sleep patterns, build consistent habits, and wake up refreshed. This app offers simple tracking, insightful trends, and personalized goals to improve your sleep quality without complexity. Your data remains private and on your device.

**Highlights:** Sleep tracking and logging, Sleep history and trend visualization, Sleep statistics and deep sleep insights, Daily streak motivation, Smart bedtime and wake-up reminders, Personalized sleep duration goals, Privacy-focused, on-device data storage

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sleep App：Sleep Tracker, Sound free?

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

### Is SleepFlow Sleep Tracker free?

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

### Do Sleep App：Sleep Tracker, Sound or SleepFlow Sleep Tracker have ads?

Neither Sleep App：Sleep Tracker, Sound nor SleepFlow Sleep Tracker shows ads.

### Which is updated more often, Sleep App：Sleep Tracker, Sound or SleepFlow Sleep Tracker?

Sleep App：Sleep Tracker, Sound ships an update monthly, and SleepFlow Sleep Tracker daily. Most recently, Sleep App：Sleep Tracker, Sound was updated on October 30, 2026 and SleepFlow Sleep Tracker on October 31, 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.*