# RailDa vs Sougou Pro

The clearest difference is iOS requirement: RailDa at 13.0 against Sougou Pro's 15.1. 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.

RailDa ships an update fortnightly, Sougou Pro weekly. The most recent releases landed on October 4, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | RailDa | Sougou Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Size | 29 MB | 34 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Abdoul Karim Macalou](https://appshunter.io/developer/6781802157) | [Hamidou Traore](https://appshunter.io/developer/6781656286) |

## What reviewers say

### RailDa

[App page](https://appshunter.io/ios/app/railda/id6781802155)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sougou Pro

[App page](https://appshunter.io/ios/app/sougou-pro/id6786441010)

**In-app purchases:** none


## Frequently asked questions

### Is RailDa free?

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

### Is Sougou Pro free?

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

### Do RailDa or Sougou Pro have ads?

Neither RailDa nor Sougou Pro shows ads.

### Which is updated more often, RailDa or Sougou Pro?

RailDa ships an update fortnightly, and Sougou Pro weekly. Most recently, RailDa was updated on October 4, 2026 and Sougou Pro on October 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*