# Afidus App vs Stop Calculator

The clearest difference is price: Afidus App at Free against Stop Calculator's $0.99. Afidus App also leads on iOS requirement (8.0 vs 15.6). Stop Calculator's advantage is update cadence (every 2 days vs every 4 months). On ads, in-app purchases and device support there is nothing between them.

Afidus App is free to download; Stop Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Afidus App ships an update every 4 months, Stop Calculator every 2 days. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Afidus App | Stop Calculator |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/stop-calculator/id6720706774/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Monetization | — | Paid |
| Size | 44 MB | 1 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Afidus Ltd.](https://appshunter.io/developer/662847383) | [eric Hernandez](https://appshunter.io/developer/875120891) |

## What reviewers say

### Afidus App

[App page](https://appshunter.io/ios/app/afidus-app/id662847380)

**In-app purchases:** none


### Stop Calculator

[App page](https://appshunter.io/ios/app/stop-calculator/id6720706774)

This tool helps filmmakers quickly compare exposure settings between two cameras. It calculates precise stop differences in real-time, ensuring your shots are perfectly exposed and matched across different setups. Simplify your workflow and eliminate guesswork.

**Highlights:** Compare ISO, t-stop, shutter angle, and FPS, Real-time stop difference calculation, Intuitive interface for filmmakers, Exposure feedback for underexposed/overexposed shots

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

**In-app purchases:** none


## Frequently asked questions

### Is Afidus App free?

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

### Is Stop Calculator free?

Stop Calculator costs $0.99, with no in-app purchases.

### Do Afidus App or Stop Calculator have ads?

Neither Afidus App nor Stop Calculator shows ads.

### Which is updated more often, Afidus App or Stop Calculator?

Afidus App ships an update every 4 months, and Stop Calculator every 2 days. Most recently, Afidus App was updated on October 11, 2026 and Stop Calculator on October 24, 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.*