# Tortoise vs Yitan Yun

The clearest difference is review sentiment: Tortoise at 63% against Yitan Yun's 17%. Tortoise also leads on rating (2.5 vs 1.6). Yitan Yun's advantage is price (Free vs $1.99) and update cadence (every 5 weeks vs every 4 months). On ads and in-app purchases there is nothing between them.

Yitan Yun is free to download; Tortoise costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Tortoise holds the better App Store score, 2.5 against 1.6. That said, the two scores are not equally well evidenced: Yitan Yun has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 63% of Tortoise's written reviews are positive against 17% of Yitan Yun's.

Tortoise ships an update every 4 months, Yitan Yun every 5 weeks. The most recent releases landed on October 16, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Tortoise | Yitan Yun |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/tortoise-keep-tracking/id1127680609/reviews)** | [1.6 (10 ratings)](https://appshunter.io/ios/app/yitan-yun/id1633004963/reviews) |
| Number of ratings | 2 | **10** |
| Positive reviews | **63.3% of reviews** | 16.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | Paid | **Free** |
| Size | 25 MB | 102 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [叶祺 顾](https://appshunter.io/developer/1127680608) | [Dongguan ETAN Pet Supplies Co Ltd](https://appshunter.io/developer/1633004965) |

## What reviewers say

### Tortoise

[App page](https://appshunter.io/ios/app/tortoise-keep-tracking/id1127680609)

This app helps you meticulously track the growth and health of your pet turtles. Record key measurements, feeding habits, and visual progress with photos and videos. Manage multiple pets and set reminders for care tasks to ensure optimal health.

**Highlights:** Record weight and measurements, Log feeding habits, Store photos and videos, Generate growth charts, Manage multiple turtles, Set care reminders

**In-app purchases:** none


### Yitan Yun

[App page](https://appshunter.io/ios/app/yitan-yun/id1633004963)

This app connects to smart pet devices, allowing remote control, status viewing, and personalized automation. It also facilitates product purchases for smart pet raising needs.

**Highlights:** Connect to REPTI ZOO smart devices, Remote device operation and status viewing, Personalized device linkage and automation, Product purchasing, In-app feedback and support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tortoise free?

Tortoise costs $1.99, with no in-app purchases.

### Is Yitan Yun free?

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

### Which has better reviews, Tortoise or Yitan Yun?

Tortoise is rated higher. Tortoise averages 2.5 out of 5 from 2 ratings, while Yitan Yun averages 1.6 from 10 ratings.

### Do Tortoise or Yitan Yun have ads?

Neither Tortoise nor Yitan Yun shows ads.

### Which is updated more often, Tortoise or Yitan Yun?

Tortoise ships an update every 4 months, and Yitan Yun every 5 weeks. Most recently, Tortoise was updated on October 16, 2026 and Yitan Yun on October 4, 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.*