# Weight Diet Log vs FIT LOGIC

The clearest difference is ads: FIT LOGIC at none against Weight Diet Log's shown. FIT LOGIC also leads on update cadence (every 5 days vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Weight Diet Log sells 1 one-off in-app purchase and FIT LOGIC sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Weight Diet Log ships an update every 2 months, FIT LOGIC every 5 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Weight Diet Log | FIT LOGIC |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 5 days** |
| Size | 7 MB | 75 MB |
| Requires iOS | 17.6 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Ryosuke Yamamoto](https://appshunter.io/developer/1689166532) | [MAO NISHIKAWA](https://appshunter.io/developer/6782293919) |

## What reviewers say

### Weight Diet Log

[App page](https://appshunter.io/ios/app/weight-diet-log/id6775499025)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weight Diet Log Premium | $3.99 | one-time |


### FIT LOGIC

[App page](https://appshunter.io/ios/app/fit-logic-aipfc/id6782293915)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FIT LOGIC 月額プラン（友だち特典） | $9.99 | per month |
| FIT LOGIC 月額プラン | $9.99 | per month |
| FIT LOGIC 年額プラン | $99.99 | per year |


## Frequently asked questions

### Is Weight Diet Log free?

Weight Diet Log is free to download, with in-app purchases available.

### Is FIT LOGIC free?

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

### Do Weight Diet Log or FIT LOGIC have ads?

Weight Diet Log shows ads; FIT LOGIC does not.

### Which is updated more often, Weight Diet Log or FIT LOGIC?

Weight Diet Log ships an update every 2 months, and FIT LOGIC every 5 days. Most recently, Weight Diet Log was updated on October 28, 2026 and FIT LOGIC 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.*