# 4Lexile vs Authenticator App

The clearest difference is rating: Authenticator App at 4.6 against 4Lexile's 1.8. Authenticator App also leads on review sentiment (38% vs 0%) and ratings volume (908 vs 10). 4Lexile's advantage is in-app purchases (none vs 12) and ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Authenticator App sells 12 in-app purchases, starting at $6.99 per 7 days. 4Lexile asks for nothing beyond the download.

Authenticator App holds the better App Store score, 4.6 against 1.8. That said, the two scores are not equally well evidenced: Authenticator App has 908 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 0% of 4Lexile's written reviews are positive against 38% of Authenticator App's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 3, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | 4Lexile | Authenticator App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.8 (10 ratings)](https://appshunter.io/ios/app/4lexile/id1493069653/reviews) | **[4.6 (908 ratings)](https://appshunter.io/ios/app/authenticator-app-2fa-mfa/id6505110382/reviews)** |
| Number of ratings | 10 | **908** |
| Positive reviews | 0.0% of reviews | **37.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 25 MB | 320 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [4point Inc](https://appshunter.io/developer/501903170) | [A1Apps](https://appshunter.io/developer/6801470556) |

## What reviewers say

### 4Lexile

[App page](https://appshunter.io/ios/app/4lexile/id1493069653)

Scan book ISBNs to quickly discover their Lexile levels. This utility helps users identify appropriate reading materials based on reading proficiency.

**Highlights:** Scan book ISBNs, Find Lexile levels, Identify reading materials

**Features:** macOS Compatibility

**In-app purchases:** none


### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-2fa-mfa/id6505110382)

Secure your online accounts with two-factor and multi-factor authentication. Generates time-based one-time passwords (TOTP) and OTP codes for fast, reliable logins. Includes a built-in password manager and encrypted backup for all your credentials.

**Highlights:** Two-factor authentication (2FA), Multi-factor authentication (MFA), Time-based one-time passwords (TOTP), Built-in password manager, Encrypted backup and sync, Import from other authenticator apps, Offline code generation

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $6.99 | per 7 days |
| Pro Weekly Plan | $6.99 | per 7 days |
| Pro Weekly Plan | $6.99 | per 7 days |
| Pro Weekly Plan | $9.99 | per 7 days |
| Pro Weekly Plan | $9.99 | per 7 days |
| Premium Monthly | $9.99 | per month |
| Premium Monthly | $12.99 | per month |
| Pro Yearly | $24.99 | per year |
| Pro Yearly | $49.99 | per year |
| Pro Yearly | $49.99 | per year |
| Pro Yearly | $59.99 | per year |
| Pro Yearly Plan | $59.99 | per year |


## Frequently asked questions

### Is 4Lexile free?

4Lexile is free to download, with no in-app purchases.

### Is Authenticator App free?

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

### Which has better reviews, 4Lexile or Authenticator App?

Authenticator App is rated higher. 4Lexile averages 1.8 out of 5 from 10 ratings, while Authenticator App averages 4.6 from 908 ratings.

### Do 4Lexile or Authenticator App have ads?

Authenticator App shows ads; 4Lexile does not.

### Which is updated more often, 4Lexile or Authenticator App?

4Lexile ships an update every 3 weeks, and Authenticator App every 3 weeks. Most recently, 4Lexile was updated on October 3, 2026 and Authenticator App 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.*