# Auth Armor Authenticator vs Process Engineer Calc

The clearest difference is device support: Auth Armor Authenticator at 3 against Process Engineer Calc's 1. Auth Armor Authenticator also leads on iOS requirement (11.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Auth Armor Authenticator ships an update fortnightly, Process Engineer Calc every 10 days. The most recent releases landed on October 6, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Auth Armor Authenticator | Process Engineer Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Size | 35 MB | 11 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Auth Armor Technologies, Inc](https://appshunter.io/developer/1543570928) | [冯泰 蔡](https://appshunter.io/developer/1896641064) |

## What reviewers say

### Auth Armor Authenticator

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Process Engineer Calc

[App page](https://appshunter.io/ios/app/process-engineer-calc-lms/id6774295442)

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

**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 Process Engineer Calc free?

Process Engineer Calc is free to download, with no in-app purchases.

### Do Auth Armor Authenticator or Process Engineer Calc have ads?

Neither Auth Armor Authenticator nor Process Engineer Calc shows ads.

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

Auth Armor Authenticator ships an update fortnightly, and Process Engineer Calc every 10 days. Most recently, Auth Armor Authenticator was updated on October 6, 2026 and Process Engineer Calc on September 25, 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.*