# Concentrate! — How observant are you?

> How observant are you? (iPhone/iPad app by Jonathan Groves.)

- Source: https://appshunter.io/ios/app/concentrate/id1503885670 (this page in markdown: same URL + `.md`)
- Developer: [Jonathan Groves](https://appshunter.io/developer/513207200)
- Category: Entertainment, Education
- Price: $0.99
- Age rating: 4+
- Requires: iOS 13.4 · 3 MB
- Languages: English
- Released: 2020-04-18
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/concentrate/id1503885670/reviews.md

## What is Concentrate!?

We all think we're observant - but are we really?
You are shown a screen containing random animal characters which you must memorise. The screen clears and you’re asked a question on what you saw. How hard can that be?
There are 18 stages on each level, each one has an additional character and an additional second to study. 
Each level adds an extra question type. You start with three lives. If you get a question wrong you lose a life and restart the level. If you lose all your lives you restart the entire game.
Concentrate!


## Version history (last 5 releases)

### 3.0 — 2022-11-04

Added Highest Level (in Options) and squashed a few behind-the-scenes bugs.

### 2.3 — 2020-05-22

Only show Intro when starting game (or restarting!).
Fix a couple of typos and minor user interface adjustments.
Keep safe, everyone.

### 2.2 — 2020-05-18

Added Stage number to level display in the Status.
Bugfix - reduce height of the intro to fit on older devices.

### 2.1 — 2020-05-07

Added Chardex, a reference guide to the characters, accessible through a link in Options. The Chardex is the single source of truth about the game characters, and studying it will give clues about future question types in development...
Keep safe, guys...

### 2.0 — 2020-05-05

Completely rewritten. All new user interface, starting with introduction which explains how to play.
Also introduces lives.

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## More apps by Jonathan Groves

- [DualTimer](https://appshunter.io/ios/app/dualtimer/id513207197)
- [TVStopwatch](https://appshunter.io/ios/app/tvstopwatch/id1051255521)
- [Working Memory Test](https://appshunter.io/ios/app/working-memory-test/id1057888083)

All apps by Jonathan Groves: https://appshunter.io/developer/513207200

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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 2026-05-17.*