# MemNum vs Subliminal Brain Training

The clearest difference is in-app purchases: MemNum at none against Subliminal Brain Training's 1. Subliminal Brain Training's advantage is update cadence (every 3 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Subliminal Brain Training sells 1 one-off in-app purchase. MemNum asks for nothing beyond the download.

MemNum ships an update every 3 weeks, Subliminal Brain Training every 3 days. The most recent releases landed on September 10, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | MemNum | Subliminal Brain Training |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 11 MB | 5 MB |
| Requires iOS | 15.6 | **15.5** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mark Gumbs](https://appshunter.io/developer/1177993316) | [Paul Dobson](https://appshunter.io/developer/1500443571) |

## What reviewers say

### MemNum

[App page](https://appshunter.io/ios/app/memnum-memory-number-puzzle/id1552442650)

**Features:** macOS Compatibility

**In-app purchases:** none


### Subliminal Brain Training

[App page](https://appshunter.io/ios/app/subliminal-brain-training/id6717612809)

Enhance your memory and cognitive skills with this engaging game. Challenge your quick-recall abilities with rapidly flashing numbers that adapt to your performance. Daily sessions can significantly improve mental agility and focus.

**Highlights:** Quick daily memory sessions, Adaptive difficulty adjusts to performance, Progressive levels with increasing digits, Subliminal number flashes at advanced stages, User-friendly interface, Progress tracking and personal bests

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

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


## Frequently asked questions

### Is MemNum free?

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

### Is Subliminal Brain Training free?

Subliminal Brain Training is free to download, with in-app purchases available.

### Do MemNum or Subliminal Brain Training have ads?

Neither MemNum nor Subliminal Brain Training shows ads.

### Which is updated more often, MemNum or Subliminal Brain Training?

MemNum ships an update every 3 weeks, and Subliminal Brain Training every 3 days. Most recently, MemNum was updated on September 10, 2026 and Subliminal Brain Training on June 4, 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.*