# Keylet vs 2FA iAtomos

The clearest difference is in-app purchases: 2FA iAtomos at none against Keylet's 3. 2FA iAtomos also leads on device support (4 vs 2). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Keylet sells 3 in-app purchases, starting at $2.99 per month. 2FA iAtomos asks for nothing beyond the download.

Keylet ships an update every 5 days, 2FA iAtomos every 8 days. The most recent releases landed on October 4, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Keylet | 2FA iAtomos |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 8 days |
| Size | 108 MB | 63 MB |
| Requires iOS | 16.4 | **15.5** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Studio Fifteen](https://appshunter.io/developer/1470310980) | [SAMUEL MORENO CONEJERO](https://appshunter.io/developer/6796264522) |

## What reviewers say

### Keylet

[App page](https://appshunter.io/ios/app/keylet-2fa-authenticator/id6779371596)

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Keylet Pro – Monthly | $2.99 | per month |
| Keylet Pro – Yearly | $12.99 | per year |
| Keylet Pro – Lifetime | $44.99 | one-time |


### 2FA iAtomos

[App page](https://appshunter.io/ios/app/2fa-iatomos-authenticator/id6803874033)

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

**In-app purchases:** none


## Frequently asked questions

### Is Keylet free?

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

### Is 2FA iAtomos free?

2FA iAtomos is free to download, with no in-app purchases.

### Do Keylet or 2FA iAtomos have ads?

Neither Keylet nor 2FA iAtomos shows ads.

### Which is updated more often, Keylet or 2FA iAtomos?

Keylet ships an update every 5 days, and 2FA iAtomos every 8 days. Most recently, Keylet was updated on October 4, 2026 and 2FA iAtomos on October 11, 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.*