# Predilux vs CameraTestSlate

The clearest difference is in-app purchases: CameraTestSlate at none against Predilux's 1. Predilux's advantage is update cadence (every 4 months vs every 11 months) and iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Predilux sells 1 in-app purchase, starting at $14.99 per year. CameraTestSlate asks for nothing beyond the download.

Predilux ships an update every 4 months, CameraTestSlate every 11 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Predilux | CameraTestSlate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/predilux/id1168322032/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 11 months |
| Monetization | Subscription | — |
| Size | 69 MB | 1 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [WID LLC](https://appshunter.io/developer/522765968) | [Adam Wilt](https://appshunter.io/developer/590364682) |

## What reviewers say

### Predilux

[App page](https://appshunter.io/ios/app/predilux/id1168322032)

This app helps photographers and videographers predict light exposure based on light source and distance. It also allows inverse measurement of distance by specifying exposure, considering various camera and light source settings, and gels.

**Highlights:** Predict light exposure, Measure distance to light source, Adjust camera settings (FPS, ISO, Shutter), Configure light source settings, Apply gel effects (Diffusion, CTO/CTB, +- Green), Experimentally verified results

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Predilux | $14.99 | per year |


### CameraTestSlate

[App page](https://appshunter.io/ios/app/cameratestslate/id6504781682)

**Features:** iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Predilux free?

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

### Is CameraTestSlate free?

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

### Do Predilux or CameraTestSlate have ads?

Neither Predilux nor CameraTestSlate shows ads.

### Which is updated more often, Predilux or CameraTestSlate?

Predilux ships an update every 4 months, and CameraTestSlate every 11 months. Most recently, Predilux was updated on November 2, 2026 and CameraTestSlate on October 30, 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.*