# 移动立信 vs Permutation Combination

The clearest difference is ads: 移动立信 at none against Permutation Combination's shown. Permutation Combination's advantage is update cadence (every 2 days vs every 37 months). On price, in-app purchases, device support 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.

移动立信 ships an update every 37 months, Permutation Combination every 2 days. The most recent releases landed on September 16, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | 移动立信 | Permutation Combination |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/id1542568615/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 37 months | **Every 2 days** |
| Monetization | — | Ad-supported |
| Size | 145 MB | 31 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Shanghai Lixin University of Accounting And Finance](https://appshunter.io/developer/1542568617) | [HIWAZERO](https://appshunter.io/developer/1621048794) |

## What reviewers say

### 移动立信

[App page](https://appshunter.io/ios/app/id1542568615)

**Features:** macOS Compatibility

**In-app purchases:** none


### Permutation Combination

[App page](https://appshunter.io/ios/app/permutation-combination/id6448662601)

Easily calculate permutations and combinations for mathematics and statistics. This tool simplifies complex calculations, helping users save time and improve accuracy in exams and studies.

**Highlights:** Permutation calculations, Combination calculations, Time-saving for exams, Mathematical and statistical use, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 移动立信 free?

移动立信 is free to download, with no in-app purchases.

### Is Permutation Combination free?

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

### Do 移动立信 or Permutation Combination have ads?

Permutation Combination shows ads; 移动立信 does not.

### Which is updated more often, 移动立信 or Permutation Combination?

移动立信 ships an update every 37 months, and Permutation Combination every 2 days. Most recently, 移动立信 was updated on September 16, 2026 and Permutation Combination on September 30, 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.*