# SETRS vs AeroScent

The clearest difference is update cadence: SETRS at every 2 weeks against AeroScent's every 4 weeks. SETRS also leads on iOS requirement (8.2 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

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

SETRS ships an update every 2 weeks, AeroScent every 4 weeks. The most recent releases landed on October 4, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | SETRS | AeroScent |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 weeks |
| Size | 40 MB | 187 MB |
| Requires iOS | **8.2** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [轶飞 唐](https://appshunter.io/developer/1448968412) | [桂平 荣](https://appshunter.io/developer/1852183917) |

## What reviewers say

### SETRS

[App page](https://appshunter.io/ios/app/setrs/id1459485991)

**In-app purchases:** none


### AeroScent

[App page](https://appshunter.io/ios/app/aeroscent/id6755863785)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SETRS free?

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

### Is AeroScent free?

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

### Do SETRS or AeroScent have ads?

Neither SETRS nor AeroScent shows ads.

### Which is updated more often, SETRS or AeroScent?

SETRS ships an update every 2 weeks, and AeroScent every 4 weeks. Most recently, SETRS was updated on October 4, 2026 and AeroScent on October 9, 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.*