# 集合 vs Doppel

The clearest difference is device support: 集合 at 2 against Doppel's —. On price, in-app purchases and iOS requirement there is nothing between them.

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

## The numbers

| Metric | 集合 | Doppel |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | — |
| Update frequency | Every 11 days | — |
| Size | 63 MB | 48 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPod** | — |
| Age rating | 17+ | 17+ |
| Developer | [10AM TECHNOLOGY INVESTMENT LTD.](https://appshunter.io/developer/1769533390) | [Hainan Weili Digital Technology Co., Ltd](https://appshunter.io/developer/1872285061) |

## What reviewers say

### 集合

[App page](https://appshunter.io/ios/app/1-plus-1/id6701999420)

**Features:** Siri integration

**In-app purchases:** none


### Doppel

[App page](https://appshunter.io/ios/app/doppel/id6758992033)

**In-app purchases:** none


## Frequently asked questions

### Is 集合 free?

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

### Is Doppel free?

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

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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.*