# Serene Kid vs Workout Tracker Gym Log

The clearest difference is in-app purchases: Serene Kid at none against Workout Tracker Gym Log's 5. Workout Tracker Gym Log'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. Workout Tracker Gym Log sells 5 in-app purchases, starting at $6.99 per 7 days. Serene Kid asks for nothing beyond the download.

Serene Kid ships an update every 2 months, Workout Tracker Gym Log every 3 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Serene Kid | Workout Tracker Gym Log |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 103 MB | 88 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Advanced Yoga Therapy, Inc](https://appshunter.io/developer/1040239993) | [Changsha Liangchao Technology Co., Ltd.](https://appshunter.io/developer/1767728236) |

## What reviewers say

### Serene Kid

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Workout Tracker Gym Log

[App page](https://appshunter.io/ios/app/workout-tracker-gym-log-swol/id6793772616)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $6.99 | per 7 days |
| Weekly Subscription | $9.99 | per 7 days |
| Monthly Subscription | $9.99 | per month |
| Yearly Subscription | $29.99 | per year |
| Lifetime Membership | $69.99 | one-time |


## Frequently asked questions

### Is Serene Kid free?

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

### Is Workout Tracker Gym Log free?

Workout Tracker Gym Log is free to download, with in-app purchases available.

### Do Serene Kid or Workout Tracker Gym Log have ads?

Neither Serene Kid nor Workout Tracker Gym Log shows ads.

### Which is updated more often, Serene Kid or Workout Tracker Gym Log?

Serene Kid ships an update every 2 months, and Workout Tracker Gym Log every 3 weeks. Most recently, Serene Kid was updated on October 30, 2026 and Workout Tracker Gym Log 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.*