# WattTools vs Glass Authenticator 2FA

The clearest difference is update cadence: Glass Authenticator 2FA at weekly against WattTools's every 3 weeks. WattTools's advantage is iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. WattTools sells 2 in-app purchases, starting at $0.99 per 7 days and Glass Authenticator 2FA sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

WattTools ships an update every 3 weeks, Glass Authenticator 2FA weekly. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | WattTools | Glass Authenticator 2FA |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | — | Paid |
| Size | 101 MB | 11 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [源 张](https://appshunter.io/developer/1649775012) | [丽 谭](https://appshunter.io/developer/1869558867) |

## What reviewers say

### WattTools

[App page](https://appshunter.io/ios/app/watttools/id6476344694)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription | $0.99 | per 7 days |
| 3Credits | $0.99 | one-time |


### Glass Authenticator 2FA

[App page](https://appshunter.io/ios/app/glass-authenticator-2fa/id6760772127)

This app offers elegant two-factor authentication with a modern glassmorphic design. It supports industry-standard TOTP/HOTP algorithms, iCloud sync, and biometric security for enhanced protection of your online accounts.

**Highlights:** Glassmorphic UI design, TOTP and HOTP algorithm support, iCloud sync across devices, Apple Watch app, Biometric vault (Face ID/Touch ID), Automatic brand icon recognition, Privacy-first local storage

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Glass Auth Pro Lifetime | $2.99 | one-time |


## Frequently asked questions

### Is WattTools free?

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

### Is Glass Authenticator 2FA free?

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

### Do WattTools or Glass Authenticator 2FA have ads?

Neither WattTools nor Glass Authenticator 2FA shows ads.

### Which is updated more often, WattTools or Glass Authenticator 2FA?

WattTools ships an update every 3 weeks, and Glass Authenticator 2FA weekly. Most recently, WattTools was updated on October 2, 2026 and Glass Authenticator 2FA 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.*