# Check Calo vs Slim

The clearest difference is in-app purchases: Check Calo at none against Slim's 1. Check Calo also leads on iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Slim sells 1 one-off in-app purchase. Check Calo asks for nothing beyond the download.

## The numbers

| Metric | Check Calo | Slim |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 50 MB | 2 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thach Dao Ngoc](https://appshunter.io/developer/1896047752) | [东 陈](https://appshunter.io/developer/1895737739) |

## What reviewers say

### Check Calo

[App page](https://appshunter.io/ios/app/check-calo/id6765718237)

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

**In-app purchases:** none


### Slim

[App page](https://appshunter.io/ios/app/slim-note-calorie-control/id6771005414)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $0.99 | one-time |


## Frequently asked questions

### Is Check Calo free?

Check Calo is free to download, with no in-app purchases.

### Is Slim free?

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

### Do Check Calo or Slim have ads?

Neither Check Calo nor Slim shows ads.

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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.*