# i vs 吾身

The clearest difference is in-app purchases: i at none against 吾身's 1. i also leads on iOS requirement (9.0 vs 11.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 吾身 sells 1 one-off in-app purchase. i asks for nothing beyond the download.

i ships an update every 2 months, 吾身 every 6 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | i | 吾身 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 26 MB | 56 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guangdong AVCiT Technology Holding Co.,Ltd.](https://appshunter.io/developer/1019471401) | [华盛 卢](https://appshunter.io/developer/1544700408) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-ctl/id1019471402)

**Features:** macOS Compatibility

**In-app purchases:** none


### 吾身

[App page](https://appshunter.io/ios/app/id1671694906)

This app helps you track and manage your habits, both good and bad. It offers multi-dimensional analysis, statistical tracking, and periodic reviews, with the ability to export your data.

**Highlights:** Habit tracking, Mood tracking, Water intake logging, Multi-dimensional analysis, Statistical tracking, Periodic reviews, Data export

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 高级版 | $2.99 | one-time |


## Frequently asked questions

### Is i free?

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

### Is 吾身 free?

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

### Do i or 吾身 have ads?

Neither i nor 吾身 shows ads.

### Which is updated more often, i or 吾身?

i ships an update every 2 months, and 吾身 every 6 weeks. Most recently, i was updated on November 1, 2026 and 吾身 on November 3, 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.*