# Flicker Fusion vs Sensitivity Specificity

The clearest difference is iOS requirement: Sensitivity Specificity at 13.0 against Flicker Fusion's 15.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Flicker Fusion | Sensitivity Specificity |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Size | 18 MB | 41 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lafayette Instrument Company, Inc.](https://appshunter.io/developer/335029582) | [STAGE CODING, Travnik](https://appshunter.io/developer/1637068135) |

## What reviewers say

### Flicker Fusion

[App page](https://appshunter.io/ios/app/flicker-fusion/id1471020622)

**In-app purchases:** none


### Sensitivity Specificity

[App page](https://appshunter.io/ios/app/sensitivity-specificity/id1618659652)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flicker Fusion free?

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

### Is Sensitivity Specificity free?

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

### Do Flicker Fusion or Sensitivity Specificity have ads?

Neither Flicker Fusion nor Sensitivity Specificity 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.*