# Engineering FMEA vs Auth Authenticator

The clearest difference is price: Auth Authenticator at Free against Engineering FMEA's $4.99. Auth Authenticator also leads on device support (4 vs 1). Engineering FMEA's advantage is in-app purchases (none vs 3) and iOS requirement (9.0 vs 16). On update cadence and ads there is nothing between them.

Auth Authenticator is free to download; Engineering FMEA costs $4.99 up front. Auth Authenticator sells 3 in-app purchases, starting at $9.99 per 7 days. Engineering FMEA asks for nothing beyond the download.

Engineering FMEA ships an update every 3 months, Auth Authenticator every 5 months. The most recent releases landed on September 24, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Engineering FMEA | Auth Authenticator |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | — | **[4.4 (214 ratings)](https://appshunter.io/ios/app/auth-authenticator/id1554760348/reviews)** |
| Number of ratings | — | **214** |
| Positive reviews | — | 56.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Monetization | — | Free with in-app purchases |
| Size | 11 MB | 20 MB |
| Requires iOS | **9.0** | 16 |
| Devices | iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [DRH YAZILIM VE MUHENDISLIK HIZMETLERI LTD STI](https://appshunter.io/developer/914295588) | [Appios Bilisim](https://appshunter.io/developer/1796567865) |

## What reviewers say

### Engineering FMEA

[App page](https://appshunter.io/ios/app/engineering-fmea/id1036718443)

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

**In-app purchases:** none


### Auth Authenticator

[App page](https://appshunter.io/ios/app/auth-authenticator/id1554760348)

Secure your online accounts with this Two-Factor Authentication (2FA) app. It generates time-based one-time passwords (TOTP) and offers encrypted backups, multi-device sync, and offline access. Protect your accounts from unauthorized access with robust security features.

**Highlights:** Encrypted iCloud Backup, Apple Watch Support, Multi-Device Sync, Offline Access, Biometric & PIN Lock, Quick Setup, TOTP Security

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription Plans | $9.99 | per 7 days |
| Monthly Subscription Plans | $14.99 | per month |
| Yearly Subscription  Plans | $49.99 | per year |


## Frequently asked questions

### Is Engineering FMEA free?

Engineering FMEA costs $4.99, with no in-app purchases.

### Is Auth Authenticator free?

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

### Do Engineering FMEA or Auth Authenticator have ads?

Neither Engineering FMEA nor Auth Authenticator shows ads.

### Which is updated more often, Engineering FMEA or Auth Authenticator?

Engineering FMEA ships an update every 3 months, and Auth Authenticator every 5 months. Most recently, Engineering FMEA was updated on September 24, 2026 and Auth Authenticator on October 23, 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.*