# 戒烟打卡挑战 vs Slim

The clearest difference is in-app purchases: 戒烟打卡挑战 at none against Slim's 1. 戒烟打卡挑战 also leads on iOS requirement (14.0 vs 17.0). Slim's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Slim sells 1 one-off in-app purchase. 戒烟打卡挑战 asks for nothing beyond the download.

## The numbers

| Metric | 戒烟打卡挑战 | Slim |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | — |
| Size | 87 MB | 2 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Qun Cao](https://appshunter.io/developer/1655069600) | [东 陈](https://appshunter.io/developer/1895737739) |

## What reviewers say

### 戒烟打卡挑战

[App page](https://appshunter.io/ios/app/id6762992700)

**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 戒烟打卡挑战 free?

戒烟打卡挑战 is free to download, with no in-app purchases.

### Is Slim free?

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

### Do 戒烟打卡挑战 or Slim have ads?

戒烟打卡挑战 shows ads; Slim does not.

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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.*