# F15 Training Centre vs Fasting Ratio

The clearest difference is in-app purchases: F15 Training Centre at none against Fasting Ratio's 3. Fasting Ratio's advantage is update cadence (every 5 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Fasting Ratio sells 3 one-off in-app purchases. F15 Training Centre asks for nothing beyond the download.

F15 Training Centre ships an update every 3 months, Fasting Ratio every 5 days. The most recent releases landed on September 29, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | F15 Training Centre | Fasting Ratio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Size | 55 MB | 1 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Momence, Inc.](https://appshunter.io/developer/1577856011) | [守信 尚](https://appshunter.io/developer/1889197777) |

## What reviewers say

### F15 Training Centre

[App page](https://appshunter.io/ios/app/f15-training-centre/id6479014101)

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

**In-app purchases:** none


### Fasting Ratio

[App page](https://appshunter.io/ios/app/fasting-ratio/id6771770188)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $4.99 | one-time |


## Frequently asked questions

### Is F15 Training Centre free?

F15 Training Centre is free to download, with no in-app purchases.

### Is Fasting Ratio free?

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

### Do F15 Training Centre or Fasting Ratio have ads?

Neither F15 Training Centre nor Fasting Ratio shows ads.

### Which is updated more often, F15 Training Centre or Fasting Ratio?

F15 Training Centre ships an update every 3 months, and Fasting Ratio every 5 days. Most recently, F15 Training Centre was updated on September 29, 2026 and Fasting Ratio on October 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*