# Fox RT Guide vs Actinic

The clearest difference is in-app purchases: Fox RT Guide at none against Actinic's 1. Fox RT Guide also leads on iOS requirement (18.6 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Actinic sells 1 one-off in-app purchase. Fox RT Guide asks for nothing beyond the download.

Fox RT Guide ships an update every 6 weeks, Actinic every 3 weeks. Both last shipped on November 5, 2026.

## The numbers

| Metric | Fox RT Guide | Actinic |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Size | 3 MB | 1 MB |
| Requires iOS | **18.6** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mind Fox Software Solutions Private Limited](https://appshunter.io/developer/1891994531) | [永 张](https://appshunter.io/developer/1806535769) |

## What reviewers say

### Fox RT Guide

[App page](https://appshunter.io/ios/app/fox-rt-guide/id6761904066)

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

**In-app purchases:** none


### Actinic

[App page](https://appshunter.io/ios/app/actinic-exposure-calculator/id6787106769)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Actinic Pro | $4.99 | one-time |


## Frequently asked questions

### Is Fox RT Guide free?

Fox RT Guide is free to download, with no in-app purchases.

### Is Actinic free?

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

### Do Fox RT Guide or Actinic have ads?

Neither Fox RT Guide nor Actinic shows ads.

### Which is updated more often, Fox RT Guide or Actinic?

Fox RT Guide ships an update every 6 weeks, and Actinic every 3 weeks. Most recently, Fox RT Guide was updated on November 5, 2026 and Actinic on November 5, 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.*