# 树懒轻断食 vs Pengu

The clearest difference is in-app purchases: 树懒轻断食 at none against Pengu's 3. Pengu's advantage is update cadence (every 9 days vs every 3 weeks) and iOS requirement (15.1 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Pengu sells 3 in-app purchases, starting at $4.99 per 7 days. 树懒轻断食 asks for nothing beyond the download.

树懒轻断食 ships an update every 3 weeks, Pengu every 9 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 树懒轻断食 | Pengu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pengu-fasting-and-meal-tracker/id6767768160/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | — | Freemium |
| Size | 3 MB | 58 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [立华 陈](https://appshunter.io/developer/1886656849) | [junhee cho](https://appshunter.io/developer/1884842008) |

## What reviewers say

### 树懒轻断食

[App page](https://appshunter.io/ios/app/and/id6762049386)

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

**In-app purchases:** none


### Pengu

[App page](https://appshunter.io/ios/app/pengu-fasting-and-meal-tracker/id6767768160)

Track your intermittent fasting and meals with a gentle approach. Features include fasting timers, one-photo meal logging with auto-detection, and calorie counting. Monitor your progress with a visual mascot and calendar view.

**Highlights:** Intermittent fasting timers (16:8, 18:6), One-photo meal logging, Calorie and nutrition tracking, Penguin progress mascot, Auto-detected food menus, Calendar view of past data

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pengu Pro Weekly | $4.99 | per 7 days |
| Pengu Pro Monthly | $5.99 | per month |
| Pengu Pro Yearly | $39.99 | per year |


## Frequently asked questions

### Is 树懒轻断食 free?

树懒轻断食 is free to download, with no in-app purchases.

### Is Pengu free?

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

### Do 树懒轻断食 or Pengu have ads?

Neither 树懒轻断食 nor Pengu shows ads.

### Which is updated more often, 树懒轻断食 or Pengu?

树懒轻断食 ships an update every 3 weeks, and Pengu every 9 days. Most recently, 树懒轻断食 was updated on October 31, 2026 and Pengu on November 5, 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.*