# Okoia Scale vs CalmySleep

The clearest difference is in-app purchases: Okoia Scale at none against CalmySleep's 3. Okoia Scale also leads on iOS requirement (6.0 vs 13.0). CalmySleep's advantage is update cadence (every 11 days vs every 8 months). On price, ads and device support there is nothing between them.

Both are free to download. CalmySleep sells 3 one-off in-app purchases. Okoia Scale asks for nothing beyond the download.

Okoia Scale ships an update every 8 months, CalmySleep every 11 days. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Okoia Scale | CalmySleep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 11 days** |
| Size | 20 MB | 59 MB |
| Requires iOS | **6.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zhongshan Camry Electronic Co., Ltd.](https://appshunter.io/developer/556311830) | [Alain Ranvier](https://appshunter.io/developer/1883286140) |

## What reviewers say

### Okoia Scale

[App page](https://appshunter.io/ios/app/okoia-scale/id879064660)

**Features:** Vision Pro support

**In-app purchases:** none


### CalmySleep

[App page](https://appshunter.io/ios/app/calmysleep/id6770083070)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Accès un mois | $3.99 | one-time |
| Accès un an | $8.99 | one-time |
| Accès à vie | $17.99 | one-time |


## Frequently asked questions

### Is Okoia Scale free?

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

### Is CalmySleep free?

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

### Do Okoia Scale or CalmySleep have ads?

Neither Okoia Scale nor CalmySleep shows ads.

### Which is updated more often, Okoia Scale or CalmySleep?

Okoia Scale ships an update every 8 months, and CalmySleep every 11 days. Most recently, Okoia Scale was updated on November 1, 2026 and CalmySleep 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.*