# Authenticate By KDC vs LightMeter Pro

The clearest difference is in-app purchases: Authenticate By KDC at none against LightMeter Pro's 3. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. LightMeter Pro sells 3 in-app purchases, starting at $2.99 per 7 days. Authenticate By KDC asks for nothing beyond the download.

## The numbers

| Metric | Authenticate By KDC | LightMeter Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Size | 4 MB | 11 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kenneth Lovett](https://appshunter.io/developer/1831085892) | [Alexis Raimbault](https://appshunter.io/developer/1695318313) |

## What reviewers say

### Authenticate By KDC

[App page](https://appshunter.io/ios/app/authenticate-by-kdc/id6751268798)

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

**In-app purchases:** none


### LightMeter Pro

[App page](https://appshunter.io/ios/app/lightmeter-pro-lux-meter/id6759503979)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LightMeter Pro Weekly | $2.99 | per 7 days |
| LightMeter Pro Monthly | $5.99 | per month |
| LightMeter Pro Yearly | $24.99 | per year |


## Frequently asked questions

### Is Authenticate By KDC free?

Authenticate By KDC is free to download, with no in-app purchases.

### Is LightMeter Pro free?

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

### Do Authenticate By KDC or LightMeter Pro have ads?

Neither Authenticate By KDC nor LightMeter Pro shows ads.

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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.*