# Auth Armor Authenticator vs TOTP Calc

The clearest difference is price: Auth Armor Authenticator at Free against TOTP Calc's $1.99. Auth Armor Authenticator also leads on update cadence (fortnightly vs every 5 weeks) and iOS requirement (11.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Auth Armor Authenticator is free to download; TOTP Calc costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Auth Armor Authenticator ships an update fortnightly, TOTP Calc every 5 weeks. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Auth Armor Authenticator | TOTP Calc |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Size | 35 MB | 8 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Auth Armor Technologies, Inc](https://appshunter.io/developer/1543570928) | [Shizuka TORITANI](https://appshunter.io/developer/967884555) |

## What reviewers say

### Auth Armor Authenticator

[App page](https://appshunter.io/ios/app/auth-armor-authenticator/id1502837764)

**Features:** macOS Compatibility

**In-app purchases:** none


### TOTP Calc

[App page](https://appshunter.io/ios/app/totp-calc/id6742089228)

**In-app purchases:** none


## Frequently asked questions

### Is Auth Armor Authenticator free?

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

### Is TOTP Calc free?

TOTP Calc costs $1.99, with no in-app purchases.

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

Neither Auth Armor Authenticator nor TOTP Calc shows ads.

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

Auth Armor Authenticator ships an update fortnightly, and TOTP Calc every 5 weeks. Most recently, Auth Armor Authenticator was updated on October 6, 2026 and TOTP Calc on October 7, 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.*