# Authenticator App⋅ vs Naval Letter Builder

The clearest difference is in-app purchases: Naval Letter Builder at none against Authenticator App⋅'s 6. Naval Letter Builder also leads on ads (none vs shown) and update cadence (every 6 days vs every 3 weeks). Authenticator App⋅'s advantage is iOS requirement (15.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. Authenticator App⋅ sells 6 in-app purchases, starting at $4.99 per 7 days. Naval Letter Builder asks for nothing beyond the download.

Authenticator App⋅ ships an update every 3 weeks, Naval Letter Builder every 6 days. The most recent releases landed on September 3, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Authenticator App⋅ | Naval Letter Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (153 ratings)](https://appshunter.io/ios/app/authenticator-app/id6742173130/reviews)** | — |
| Number of ratings | **153** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | Freemium | — |
| Size | 72 MB | 11 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [ByteSpeed](https://appshunter.io/developer/1724157365) | [RoxyKovu LLC](https://appshunter.io/developer/1816071699) |

## What reviewers say

### Authenticator App⋅

[App page](https://appshunter.io/ios/app/authenticator-app/id6742173130)

Securely manage all your passwords in an encrypted vault and enhance account protection with dual-encrypted two-factor authentication codes. Generate strong passwords, sync across devices, and set up accounts quickly with QR codes.

**Highlights:** Encrypted password storage, Smart password generator, Dual-encrypted 2FA, Fast QR code setup, Secure iCloud backup and sync, Import/export QR codes

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly VIP - 3 Days Free | $4.99 | per 7 days |
| Weekly VIP Subscription | $7.99 | per 7 days |
| Monthly VIP Subscription | $14.99 | per month |
| Yearly VIP Subscription | $39.99 | per year |
| Yearly VIP - 3 Days Free | $49.99 | per year |
| Lifetime VIP | $49.99 | one-time |


### Naval Letter Builder

[App page](https://appshunter.io/ios/app/naval-letter-builder/id6768153774)

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

**In-app purchases:** none


## Frequently asked questions

### Is Authenticator App⋅ free?

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

### Is Naval Letter Builder free?

Naval Letter Builder is free to download, with no in-app purchases.

### Do Authenticator App⋅ or Naval Letter Builder have ads?

Authenticator App⋅ shows ads; Naval Letter Builder does not.

### Which is updated more often, Authenticator App⋅ or Naval Letter Builder?

Authenticator App⋅ ships an update every 3 weeks, and Naval Letter Builder every 6 days. Most recently, Authenticator App⋅ was updated on September 3, 2026 and Naval Letter Builder on September 10, 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.*