# Serene Kid vs Contraction Timer & Tracker +.

The clearest difference is in-app purchases: Serene Kid at none against Contraction Timer & Tracker +.'s 7. Contraction Timer & Tracker +.'s advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Contraction Timer & Tracker +. sells 6 in-app purchases, starting at $4.99 per 7 days. Serene Kid asks for nothing beyond the download.

Serene Kid ships an update every 2 months, Contraction Timer & Tracker +. every 3 weeks. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Serene Kid | Contraction Timer & Tracker +. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 103 MB | 62 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Advanced Yoga Therapy, Inc](https://appshunter.io/developer/1040239993) | [MCVICKER CAPITAL, LLC](https://appshunter.io/developer/1829478149) |

## What reviewers say

### Serene Kid

[App page](https://appshunter.io/ios/app/serene-kid/id6463867124)

**Features:** macOS Compatibility

**In-app purchases:** none


### Contraction Timer & Tracker +.

[App page](https://appshunter.io/ios/app/contraction-timer-and-tracker-plus/id6749239100)

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Weekly | $4.99 | per 7 days |
| Weekly-Trial | $4.99 | per 7 days |
| Monthly | $12.99 | per month |
| Yearly | $39.99 | per year |
| Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Serene Kid free?

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

### Is Contraction Timer & Tracker +. free?

Contraction Timer & Tracker +. is free to download, with in-app purchases available.

### Do Serene Kid or Contraction Timer & Tracker +. have ads?

Neither Serene Kid nor Contraction Timer & Tracker +. shows ads.

### Which is updated more often, Serene Kid or Contraction Timer & Tracker +.?

Serene Kid ships an update every 2 months, and Contraction Timer & Tracker +. every 3 weeks. Most recently, Serene Kid was updated on October 14, 2026 and Contraction Timer & Tracker +. on October 11, 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.*