# SleepNote vs C

The clearest difference is update cadence: SleepNote at every 2 months against C's every 6 months. 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.

SleepNote ships an update every 2 months, C every 6 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | SleepNote | C |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Free | — |
| Size | 36 MB | 195 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Medica Technology Development Co., Ltd.](https://appshunter.io/developer/928761012) | [深圳数联天下智能科技有限公司](https://appshunter.io/developer/1694637742) |

## What reviewers say

### SleepNote

[App page](https://appshunter.io/ios/app/sleepnote/id1460758047)

This app monitors your sleep patterns and offers professional suggestions to improve sleep quality and build healthy habits. It also provides ambient light and music to help you fall asleep faster and a smart alarm to wake you at the optimal time for a refreshed feeling.

**Highlights:** Accurate sleep monitoring, Professional sleep improvement suggestions, Ambient light and music for sleep-aid, Smart alarm for optimal wake-up, Builds good sleep habits

**Features:** macOS Compatibility

**In-app purchases:** none


### C

[App page](https://appshunter.io/ios/app/c-life/id1598525677)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SleepNote free?

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

### Is C free?

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

### Do SleepNote or C have ads?

Neither SleepNote nor C shows ads.

### Which is updated more often, SleepNote or C?

SleepNote ships an update every 2 months, and C every 6 months. Most recently, SleepNote was updated on October 24, 2026 and C on October 25, 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.*