# Carbohydrate Log vs 18 grams

The clearest difference is in-app purchases: 18 grams at none against Carbohydrate Log's 3. 18 grams also leads on ads (none vs shown). Carbohydrate Log's advantage is update cadence (every 10 days vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Carbohydrate Log sells 3 in-app purchases, starting at $0.99 per month. 18 grams asks for nothing beyond the download.

Carbohydrate Log ships an update every 10 days, 18 grams every 3 weeks. The most recent releases landed on September 28, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Carbohydrate Log | 18 grams |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Size | 51 MB | 47 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [NAOYA ONO](https://appshunter.io/developer/1530328146) | [Aurelie Jeunejean](https://appshunter.io/developer/1782576074) |

## What reviewers say

### Carbohydrate Log

[App page](https://appshunter.io/ios/app/carbohydrate-log/id6470109699)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan | $0.99 | per month |
| Support Developer | $0.99 | one-time |
| Remove ads | $24.99 | one-time |


### 18 grams

[App page](https://appshunter.io/ios/app/18-grams/id6738846232)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Carbohydrate Log free?

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

### Is 18 grams free?

18 grams is free to download, with no in-app purchases.

### Do Carbohydrate Log or 18 grams have ads?

Carbohydrate Log shows ads; 18 grams does not.

### Which is updated more often, Carbohydrate Log or 18 grams?

Carbohydrate Log ships an update every 10 days, and 18 grams every 3 weeks. Most recently, Carbohydrate Log was updated on September 28, 2026 and 18 grams on October 28, 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.*