# iMemory vs WhenRedTap

The clearest difference is in-app purchases: iMemory at none against WhenRedTap's 2. WhenRedTap's advantage is ads (none vs shown) and update cadence (every 4 days vs monthly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. WhenRedTap sells 2 one-off in-app purchases. iMemory asks for nothing beyond the download.

iMemory ships an update monthly, WhenRedTap every 4 days. The most recent releases landed on August 31, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | iMemory | WhenRedTap |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/whenredtap/id6451321706/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 5 MB | 4 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [景珂 陈](https://appshunter.io/developer/620312170) | [泽 王](https://appshunter.io/developer/1382857941) |

## What reviewers say

### iMemory

[App page](https://appshunter.io/ios/app/imemory-brain-training/id1227225034)

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

**In-app purchases:** none


### WhenRedTap

[App page](https://appshunter.io/ios/app/whenredtap/id6451321706)

Test your reaction time with engaging stopwatch and agility games. Compete on leaderboards and enjoy classic arcade fun. Perfect for quick challenges and improving reflexes.

**Highlights:** Reaction speed testing, Agility games, Leaderboard competition, Whack-a-Mole mini-game, Milliseconds precision tracking

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| Paid Unlock | $0.99 | one-time |


## Frequently asked questions

### Is iMemory free?

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

### Is WhenRedTap free?

WhenRedTap is free to download, with in-app purchases available.

### Do iMemory or WhenRedTap have ads?

iMemory shows ads; WhenRedTap does not.

### Which is updated more often, iMemory or WhenRedTap?

iMemory ships an update monthly, and WhenRedTap every 4 days. Most recently, iMemory was updated on August 31, 2026 and WhenRedTap on September 9, 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.*