# Reaction CDO

> Reaction CDO (iPhone/iPad app by Viacheslav Romanenko.)

- Source: https://appshunter.io/ios/app/reaction-cdo/id1051308948 (this page in markdown: same URL + `.md`)
- Developer: [Viacheslav Romanenko](https://appshunter.io/developer/1046372418)
- Category: Education, Sports
- Price: $0.99
- Age rating: 4+
- Requires: iOS 12.0 · 9 MB
- Languages: English
- Released: 2015-11-13
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/reaction-cdo/id1051308948/reviews.md

## What is Reaction CDO?

Testing sensorimotor reaction. An assessment of reaction of a choice from two dynamic objects. Press the left and right fields. Make 12 attempts. Press on the screen. Interrupt the contact when the blue circle appears. The result includes 10 best attempts. Normality of distribution of the received results according to the Shapiro-Wilk criterion.


## Version history (last 1 release)

### 1.1.3 — 2020-11-08

Some errors were corrected.

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## More apps by Viacheslav Romanenko

- [Reaction SM](https://appshunter.io/ios/app/reaction-sm/id1046372419)
- [Reaction SR](https://appshunter.io/ios/app/reaction-sr/id1047244230)
- [Reaction RC](https://appshunter.io/ios/app/reaction-rc/id1048447733)
- [Reaction RMO](https://appshunter.io/ios/app/reaction-rmo/id1049901807)
- [Reaction RD](https://appshunter.io/ios/app/reaction-rd/id1050398610)

All apps by Viacheslav Romanenko: https://appshunter.io/developer/1046372418

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-19.*