# Turtle Universe vs 爱主题

The clearest difference is in-app purchases: Turtle Universe at none against 爱主题's 11. Turtle Universe also leads on ads (none vs shown) and review sentiment (67% vs 50%). 爱主题's advantage is rating (4.9 vs 4.6) and update cadence (every 2 weeks vs every 6 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 爱主题 sells 10 in-app purchases, starting at $0.99 per month. Turtle Universe asks for nothing beyond the download.

爱主题 holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 45 and 15 respectively. Written reviews complicate that: 67% of Turtle Universe's written reviews are positive against 50% of 爱主题's, so the app with the better star average is not the one people write more warmly about.

Turtle Universe ships an update every 6 weeks, 爱主题 every 2 weeks. The most recent releases landed on July 29, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | Turtle Universe | 爱主题 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (45 ratings)](https://appshunter.io/ios/app/turtle-universe/id1455235317/reviews) | **[4.9 (15 ratings)](https://appshunter.io/ios/app/and/id1580690752/reviews)** |
| Number of ratings | **45** | 15 |
| Positive reviews | **66.7% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 120 MB | 241 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Turtle Sim LLC](https://appshunter.io/developer/1568741108) | [Tianjin  Nebula Era  Technology Co.,Ltd](https://appshunter.io/developer/1573709827) |

## What reviewers say

### Turtle Universe

[App page](https://appshunter.io/ios/app/turtle-universe/id1455235317)

Explore and learn about scientific phenomena through interactive microworlds. Create your own simulations using text or blocks, and engage with a global community of young learners. Discover over 100 scientific models and create computational art and games.

**Highlights:** Explore 100+ scientific models, Create custom microworlds, Code with text or blocks, Investigate phenomena, Engage in global discussions, Create computational art and games

**Features:** macOS Compatibility

**In-app purchases:** none


### 爱主题

[App page](https://appshunter.io/ios/app/and/id1580690752)

Personalize your device with a wide variety of widgets, including clocks, calendars, weather, and exclusive IP characters. Choose from diverse styles and apply themes with a single click for a fresh look. Premium members enjoy an ad-free experience and unlock all content.

**Highlights:** Diverse IP character widgets, Photo, clock, calendar, weather widgets, Customizable themes and styles, One-click theme application, Ad-free premium experience, Exclusive member content

**Features:** Siri integration

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly VIP | $0.99 | per month |
| Yearly VIP | $0.99 | per year |
| Quarterly VIP | $2.99 | per 3 months |
| Yearly VIP | $2.99 | per year |
| Yearly VIP | $3.99 | per year |
| Yearly VIP | $3.99 | per year |
| Purchase Single Theme#1 | $0.99 | one-time |
| Purchase Single Theme#2 | $1.99 | one-time |
| Purchase Single Theme#3 | $2.99 | one-time |
| 终身会员 | $4.99 | one-time |


## Frequently asked questions

### Is Turtle Universe free?

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

### Is 爱主题 free?

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

### Which has better reviews, Turtle Universe or 爱主题?

爱主题 is rated higher. Turtle Universe averages 4.6 out of 5 from 45 ratings, while 爱主题 averages 4.9 from 15 ratings.

### Do Turtle Universe or 爱主题 have ads?

爱主题 shows ads; Turtle Universe does not.

### Which is updated more often, Turtle Universe or 爱主题?

Turtle Universe ships an update every 6 weeks, and 爱主题 every 2 weeks. Most recently, Turtle Universe was updated on July 29, 2026 and 爱主题 on September 2, 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.*