# Atom Office vs Authenticator 2FA & OTP

The clearest difference is in-app purchases: Atom Office at none against Authenticator 2FA & OTP's 4. Atom Office also leads on update cadence (weekly vs every 3 weeks) and iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Authenticator 2FA & OTP sells 4 in-app purchases, starting at $3.99 per 7 days. Atom Office asks for nothing beyond the download.

Atom Office ships an update weekly, Authenticator 2FA & OTP every 3 weeks. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Atom Office | Authenticator 2FA & OTP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Size | 35 MB | 13 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Godson Ohuruogu](https://appshunter.io/developer/1851172103) | [MOBNESS LTD](https://appshunter.io/developer/1690422939) |

## What reviewers say

### Atom Office

[App page](https://appshunter.io/ios/app/atom-office/id6758051322)

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

**In-app purchases:** none


### Authenticator 2FA & OTP

[App page](https://appshunter.io/ios/app/authenticator-2fa-and-otp-ring/id6759716920)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week | $3.99 | per 7 days |
| 1 Month | $4.99 | per month |
| 1 Month | $7.99 | per month |
| 1 Year | $29.99 | per year |


## Frequently asked questions

### Is Atom Office free?

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

### Is Authenticator 2FA & OTP free?

Authenticator 2FA & OTP is free to download, with in-app purchases available.

### Do Atom Office or Authenticator 2FA & OTP have ads?

Neither Atom Office nor Authenticator 2FA & OTP shows ads.

### Which is updated more often, Atom Office or Authenticator 2FA & OTP?

Atom Office ships an update weekly, and Authenticator 2FA & OTP every 3 weeks. Most recently, Atom Office was updated on October 31, 2026 and Authenticator 2FA & OTP on October 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.*