# Authenticator App vs Thor Lithium

The clearest difference is in-app purchases: Thor Lithium at none against Authenticator App's 3. Thor Lithium also leads on update cadence (monthly vs every 15 months) and iOS requirement (13.0 vs 16.0). 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 $7.99 per 7 days. Thor Lithium asks for nothing beyond the download.

Authenticator App ships an update every 15 months, Thor Lithium monthly. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Authenticator App | Thor Lithium |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 15 months | **Monthly** |
| Size | 9 MB | 52 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Quntm Technology Group LLC](https://appshunter.io/developer/1704782043) | [江西达伙网络科技有限公司](https://appshunter.io/developer/1234844673) |

## What reviewers say

### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-secure-2fa/id6463717583)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $7.99 | per 7 days |
| 1 year subscription | $39.99 | per year |
| Lifetime Subscription | $59.99 | one-time |


### Thor Lithium

[App page](https://appshunter.io/ios/app/thor-lithium/id6746757540)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Authenticator App free?

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

### Is Thor Lithium free?

Thor Lithium is free to download, with no in-app purchases.

### Do Authenticator App or Thor Lithium have ads?

Neither Authenticator App nor Thor Lithium shows ads.

### Which is updated more often, Authenticator App or Thor Lithium?

Authenticator App ships an update every 15 months, and Thor Lithium monthly. Most recently, Authenticator App was updated on October 27, 2026 and Thor Lithium on October 28, 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.*