# Retroaction vs Know Nothin'!

The clearest difference is review sentiment: Know Nothin'! at 100% against Retroaction's 21%. Know Nothin'! also leads on ads (none vs shown) and monetization model (free vs ad-supported). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Retroaction ships an update every 2 weeks, Know Nothin'! every 6 days. Both last shipped on November 3, 2026.

## The numbers

| Metric | Retroaction | Know Nothin'! |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 21.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 6 days** |
| Monetization | Ad-supported | **Free** |
| Size | 57 MB | 73 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Retroaction](https://appshunter.io/developer/1543623559) | [David Maillard](https://appshunter.io/developer/1680017337) |

## What reviewers say

### Retroaction

[App page](https://appshunter.io/ios/app/retroaction/id1599319114)

This app helps members of sports organizations track their attendance for various activities. Users can view team details and communicate with others through built-in chat rooms. It's designed for easy group management and communication within sports associations.

**Highlights:** Track attendance for activities, View group or team details, Communicate via chat rooms, Manage sports association membership, Check presence or absence

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

**In-app purchases:** none


### Know Nothin'!

[App page](https://appshunter.io/ios/app/know-nothin/id6446096991)

Engage in friendly hockey prediction challenges with friends for both regular season and playoffs. Create or join leagues, make series and game score picks, and track your progress on live leaderboards. Features include team building, trivia, and real-time game updates.

**Highlights:** Playoff and regular season predictions, Salary-cap roster building, Custom and automated trivia, Live standings and point tracking, League chat, Home screen widgets, Live Activities for game tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is Retroaction free?

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

### Is Know Nothin'! free?

Know Nothin'! is free to download, with no in-app purchases.

### Do Retroaction or Know Nothin'! have ads?

Retroaction shows ads; Know Nothin'! does not.

### Which is updated more often, Retroaction or Know Nothin'!?

Retroaction ships an update every 2 weeks, and Know Nothin'! every 6 days. Most recently, Retroaction was updated on November 3, 2026 and Know Nothin'! on November 3, 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.*