# 体重日记 vs LightYet

The clearest difference is price: LightYet at Free against 体重日记's $0.99. LightYet also leads on update cadence (weekly vs fortnightly). 体重日记's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

LightYet is free to download; 体重日记 costs $0.99 up front. LightYet sells 3 in-app purchases, starting at $2.99 per month. 体重日记 asks for nothing beyond the download.

体重日记 ships an update fortnightly, LightYet weekly. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 体重日记 | LightYet |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Size | 12 MB | 39 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [创宏 陈](https://appshunter.io/developer/1884920634) | [依欢 孙](https://appshunter.io/developer/1895143905) |

## What reviewers say

### 体重日记

[App page](https://appshunter.io/ios/app/id6762725091)

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

**In-app purchases:** none


### LightYet

[App page](https://appshunter.io/ios/app/lightyet-body-fat-tracker/id6763201166)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $19.99 | per year |
| LightYet-Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is 体重日记 free?

体重日记 costs $0.99, with no in-app purchases.

### Is LightYet free?

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

### Do 体重日记 or LightYet have ads?

Neither 体重日记 nor LightYet shows ads.

### Which is updated more often, 体重日记 or LightYet?

体重日记 ships an update fortnightly, and LightYet weekly. Most recently, 体重日记 was updated on October 25, 2026 and LightYet on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*