# E vs Secret Keeper

The clearest difference is iOS requirement: E at 13.0 against Secret Keeper's 15.0. 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.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | E | Secret Keeper |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free | — |
| Size | 38 MB | 36 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [VEBMANI.RU, OOO](https://appshunter.io/developer/302894187) | [PAYMASTER TECHNOLOGIES ELEKTRONIK PAZARLAMA DIS TICARET LIMITED SIRKETI](https://appshunter.io/developer/1740760883) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-num-auth/id6503298323)

This app provides a secure and convenient authentication system. It uses a challenge-response model where your secret access key is stored on your mobile phone, eliminating the need for complex passwords and protecting against malware. Authorization is a simple process of entering a challenge value and receiving a number-answer.

**Highlights:** High-level security authentication, Secret access key stored on mobile, Challenge-response authorization, No complex passwords needed, Malware protection for access key, Efficient and economical system

**Features:** Vision Pro support

**In-app purchases:** none


### Secret Keeper

[App page](https://appshunter.io/ios/app/secret-keeper-encryption/id6795122825)

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

**In-app purchases:** none


## Frequently asked questions

### Is E free?

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

### Is Secret Keeper free?

Secret Keeper is free to download, with no in-app purchases.

### Do E or Secret Keeper have ads?

Neither E nor Secret Keeper shows ads.

### Which is updated more often, E or Secret Keeper?

E ships an update fortnightly, and Secret Keeper fortnightly. Most recently, E was updated on October 16, 2026 and Secret Keeper on October 9, 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.*