# Authenticator App vs E

The clearest difference is update cadence: Authenticator App at every 3 days against E's monthly. E's advantage is ratings volume (69 vs 3) and iOS requirement (15.0 vs 17.6). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Authenticator App sells 2 in-app purchases, starting at $6.99 per 7 days and E sells 1 in-app purchase, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Authenticator App holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: E has 69 ratings behind it against 3, so its average is the more settled of the two.

Authenticator App ships an update every 3 days, E monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Authenticator App | E |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/authenticator-app-duo-factor/id6740918422/reviews)** | [4.8 (69 ratings)](https://appshunter.io/ios/app/e-signature-digital-signer/id6740989831/reviews) |
| Number of ratings | 3 | **69** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 9 MB | 21 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Maxim Dolgov](https://appshunter.io/developer/1820242417) | [INTOUCH APPS, OOO](https://appshunter.io/developer/1447615759) |

## What reviewers say

### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-duo-factor/id6740918422)

Transform your living spaces with AI-powered interior design suggestions. Upload a photo of your room, choose a style, and see instant visual changes. Save and share your design ideas with ease.

**Highlights:** Real-time room transformation, Endless design inspiration, Diverse style options, Save and share designs, Intuitive interface, Latest interior design trends

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly trial subscription | $6.99 | per 7 days |
| Weekly subscription | $6.99 | per 7 days |


### E

[App page](https://appshunter.io/ios/app/e-signature-digital-signer/id6740989831)

Effortlessly sign, manage, and organize your documents from your mobile device. Securely create legally binding e-signatures, track progress, and send reminders. Offers a free tier with premium subscription options.

**Highlights:** Create e-signatures, Manage and organize documents, Track signing progress, Send reminders and cancel agreements, Support for multiple signers, Real-time notifications, Secure and legally binding signatures

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $6.99 | per 7 days |


## Frequently asked questions

### Is Authenticator App free?

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

### Is E free?

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

### Which has better reviews, Authenticator App or E?

Authenticator App is rated higher. Authenticator App averages 5.0 out of 5 from 3 ratings, while E averages 4.8 from 69 ratings.

### Do Authenticator App or E have ads?

Neither Authenticator App nor E shows ads.

### Which is updated more often, Authenticator App or E?

Authenticator App ships an update every 3 days, and E monthly. Most recently, Authenticator App was updated on October 24, 2026 and E on October 24, 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.*