# TOTP Auth vs Authenticator TOTP

The clearest difference is in-app purchases: TOTP Auth at none against Authenticator TOTP's 4. TOTP Auth also leads on iOS requirement (14.0 vs 17.6). Authenticator TOTP's advantage is update cadence (fortnightly vs every 5 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Authenticator TOTP sells 4 in-app purchases, starting at $3.49 per 7 days. TOTP Auth asks for nothing beyond the download.

TOTP Auth ships an update every 5 weeks, Authenticator TOTP fortnightly. The most recent releases landed on October 15, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | TOTP Auth | Authenticator TOTP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Size | 3 MB | 15 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Contal Travel Group Pty Ltd](https://appshunter.io/developer/1652410259) | [Boris Spiro](https://appshunter.io/developer/1853293003) |

## What reviewers say

### TOTP Auth

[App page](https://appshunter.io/ios/app/totp-auth/id6557050134)

**Features:** macOS Compatibility

**In-app purchases:** none


### Authenticator TOTP

[App page](https://appshunter.io/ios/app/authenticator-totp/id6757983630)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.49 | per 7 days |
| Monthly | $7.99 | per month |
| Yearly | $49.99 | per year |
| Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is TOTP Auth free?

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

### Is Authenticator TOTP free?

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

### Do TOTP Auth or Authenticator TOTP have ads?

Neither TOTP Auth nor Authenticator TOTP shows ads.

### Which is updated more often, TOTP Auth or Authenticator TOTP?

TOTP Auth ships an update every 5 weeks, and Authenticator TOTP fortnightly. Most recently, TOTP Auth was updated on October 15, 2026 and Authenticator TOTP on October 5, 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.*