# Serenus vs SecTrans

The clearest difference is in-app purchases: Serenus at none against SecTrans's 2. Serenus also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). SecTrans's advantage is ads (none vs shown) and update cadence (weekly vs every 3 weeks). On price there is nothing between them.

Both are free to download. SecTrans sells 2 in-app purchases, starting at $6.99 per 7 days. Serenus asks for nothing beyond the download.

Serenus ships an update every 3 weeks, SecTrans weekly. The most recent releases landed on September 15, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Serenus | SecTrans |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 28 MB | 67 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [富 李](https://appshunter.io/developer/1848170224) | [FENGHUI (HK) HOLDINGS LIMITED](https://appshunter.io/developer/1722133514) |

## What reviewers say

### Serenus

[App page](https://appshunter.io/ios/app/serenus-plan-remember/id6755084366)

**Features:** macOS Compatibility

**In-app purchases:** none


### SecTrans

[App page](https://appshunter.io/ios/app/sectrans-ai-translator/id6755095758)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Fluent Plan | $6.99 | per 7 days |
| Yearly Fluent Plan | $39.99 | per year |


## Frequently asked questions

### Is Serenus free?

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

### Is SecTrans free?

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

### Do Serenus or SecTrans have ads?

Serenus shows ads; SecTrans does not.

### Which is updated more often, Serenus or SecTrans?

Serenus ships an update every 3 weeks, and SecTrans weekly. Most recently, Serenus was updated on September 15, 2026 and SecTrans on September 14, 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.*