# Stelt Viewer vs Authenticator App

The clearest difference is in-app purchases: Stelt Viewer at none against Authenticator App's 3. Stelt Viewer also leads on iOS requirement (15.0 vs 18.0). Authenticator App's advantage is update cadence (fortnightly vs every 5 weeks) and chart position (#176 vs unranked). On price, ads and device support there is nothing between them.

Both are free to download. Authenticator App sells 3 in-app purchases, starting at $6.99 per 7 days. Stelt Viewer asks for nothing beyond the download.

Stelt Viewer ships an update every 5 weeks, Authenticator App fortnightly. The most recent releases landed on October 1, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Stelt Viewer | Authenticator App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (123 ratings)](https://appshunter.io/ios/app/authenticator-app-2fa-mfa/id6749863577/reviews)** |
| Number of ratings | — | **123** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Best chart rank | — | **#176** |
| Size | 248 MB | 104 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [Smarted srl](https://appshunter.io/developer/1740698356) | [Solid Apps LLC](https://appshunter.io/developer/6779157605) |

## What reviewers say

### Stelt Viewer

[App page](https://appshunter.io/ios/app/stelt-viewer/id6484589392)

**Features:** macOS Compatibility

**In-app purchases:** none


### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-2fa-mfa/id6749863577)

**Currently charting:** #176 Top Free · Utilities (US App Store)

Enhance your online security with time-sensitive codes for account access. This tool prevents unauthorized entry even if passwords are compromised. It's user-friendly, supports multiple accounts, and offers peace of mind for your sensitive information.

**Highlights:** Generates time-sensitive 2FA codes, Protects against unauthorized access, Supports multiple accounts, Easy setup via QR code or secret key, Available on Apple Watch, iPad, and Mac, Home Screen widget for quick access, Face ID protection for codes, iCloud synchronization for backup and restore

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $6.99 | per 7 days |
| Premium | $9.99 | per 7 days |
| Premium | $49.99 | per year |


## Frequently asked questions

### Is Stelt Viewer free?

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

### Is Authenticator App free?

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

### Do Stelt Viewer or Authenticator App have ads?

Neither Stelt Viewer nor Authenticator App shows ads.

### Which is updated more often, Stelt Viewer or Authenticator App?

Stelt Viewer ships an update every 5 weeks, and Authenticator App fortnightly. Most recently, Stelt Viewer was updated on October 1, 2026 and Authenticator App on October 15, 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.*