# Authenticator App vs LuxCam Light Meter

The clearest difference is ads: LuxCam Light Meter at none against Authenticator App's shown. Authenticator App's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.6). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Authenticator App sells 3 in-app purchases, starting at $1.99 per month and LuxCam Light Meter sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Authenticator App ships an update every 5 weeks, LuxCam Light Meter every 3 weeks. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Authenticator App | LuxCam Light Meter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Size | 26 MB | 3 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Arvind Murali](https://appshunter.io/developer/1806336604) | [Daniil Mukashev](https://appshunter.io/developer/1833839105) |

## What reviewers say

### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-safeauth/id6755765192)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $9.99 | per year |
| Lifetime | $19.99 | one-time |


### LuxCam Light Meter

[App page](https://appshunter.io/ios/app/luxcam-light-meter/id6786465173)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LuxCam Pro | $3.99 | one-time |


## Frequently asked questions

### Is Authenticator App free?

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

### Is LuxCam Light Meter free?

LuxCam Light Meter is free to download, with in-app purchases available.

### Do Authenticator App or LuxCam Light Meter have ads?

Authenticator App shows ads; LuxCam Light Meter does not.

### Which is updated more often, Authenticator App or LuxCam Light Meter?

Authenticator App ships an update every 5 weeks, and LuxCam Light Meter every 3 weeks. Most recently, Authenticator App was updated on October 8, 2026 and LuxCam Light Meter on October 13, 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.*