# Monotp vs SOTP Authenticator

The clearest difference is in-app purchases: Monotp at none against SOTP Authenticator's 2. SOTP Authenticator's advantage is update cadence (every 5 months vs every 11 months) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. SOTP Authenticator sells 2 one-off in-app purchases. Monotp asks for nothing beyond the download.

Monotp ships an update every 11 months, SOTP Authenticator every 5 months. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Monotp | SOTP Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 5 months** |
| Size | 270 MB | 20 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [MonoFor, Inc.](https://appshunter.io/developer/1496504332) | [Anzhela Baroyan](https://appshunter.io/developer/1526016553) |

## What reviewers say

### Monotp

[App page](https://appshunter.io/ios/app/monotp/id1496509890)

**Features:** macOS Compatibility

**In-app purchases:** none


### SOTP Authenticator

[App page](https://appshunter.io/ios/app/sotp-authenticator/id1526068202)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One dollar donation | $0.99 | one-time |
| Five dollar donation | $4.99 | one-time |


## Frequently asked questions

### Is Monotp free?

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

### Is SOTP Authenticator free?

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

### Do Monotp or SOTP Authenticator have ads?

Neither Monotp nor SOTP Authenticator shows ads.

### Which is updated more often, Monotp or SOTP Authenticator?

Monotp ships an update every 11 months, and SOTP Authenticator every 5 months. Most recently, Monotp was updated on October 7, 2026 and SOTP Authenticator on October 3, 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.*