# 橡胶圈 vs 聚酯PET

The clearest difference is iOS requirement: 橡胶圈 at 10.0 against 聚酯PET's 12.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 2, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | 橡胶圈 | 聚酯PET |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 82 MB | 74 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hebei ZaiXun Network Technology Co., Ltd.](https://appshunter.io/developer/994393282) | [Jiuqianjiu Hebei Network Technology Co., LTD](https://appshunter.io/developer/1618903848) |

## What reviewers say

### 橡胶圈

[App page](https://appshunter.io/ios/app/id1533401802)

**Features:** macOS Compatibility

**In-app purchases:** none


### 聚酯PET

[App page](https://appshunter.io/ios/app/pet/id1537750650)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 橡胶圈 free?

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

### Is 聚酯PET free?

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

### Do 橡胶圈 or 聚酯PET have ads?

Neither 橡胶圈 nor 聚酯PET shows ads.

### Which is updated more often, 橡胶圈 or 聚酯PET?

橡胶圈 ships an update every 2 months, and 聚酯PET every 2 months. Most recently, 橡胶圈 was updated on October 2, 2026 and 聚酯PET on September 10, 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.*