# imOTP vs OETH OnPremise

The clearest difference is update cadence: OETH OnPremise at every 3 months against imOTP's every 8 months. imOTP's advantage is iOS requirement (9.0 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.

imOTP ships an update every 8 months, OETH OnPremise every 3 months. The most recent releases landed on October 10, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | imOTP | OETH OnPremise |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 months** |
| Size | 20 MB | 26 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Johann Marinits](https://appshunter.io/developer/1135035394) | [WebComm Technology Co., Ltd.](https://appshunter.io/developer/724381640) |

## What reviewers say

### imOTP

[App page](https://appshunter.io/ios/app/imotp/id1135035395)

**Features:** macOS Compatibility

**In-app purchases:** none


### OETH OnPremise

[App page](https://appshunter.io/ios/app/oeth-onpremise/id6451398921)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is imOTP free?

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

### Is OETH OnPremise free?

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

### Do imOTP or OETH OnPremise have ads?

Neither imOTP nor OETH OnPremise shows ads.

### Which is updated more often, imOTP or OETH OnPremise?

imOTP ships an update every 8 months, and OETH OnPremise every 3 months. Most recently, imOTP was updated on October 10, 2026 and OETH OnPremise 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.*