# Dual vs PocketFlow

The clearest difference is price: PocketFlow at Free against Dual's $0.99. Dual's advantage is in-app purchases (none vs 2) and update cadence (every 2 days vs weekly). On ads and device support there is nothing between them.

PocketFlow is free to download; Dual costs $0.99 up front. PocketFlow sells 2 one-off in-app purchases. Dual asks for nothing beyond the download.

Dual ships an update every 2 days, PocketFlow weekly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Dual | PocketFlow |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/dual-n-back/id6744232772/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 90.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Weekly |
| Monetization | Paid | — |
| Size | 1 MB | 79 MB |
| Requires iOS | **16.6** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Tang](https://appshunter.io/developer/1806563018) | [Aqua Axolotl Analytics](https://appshunter.io/developer/1828911252) |

## What reviewers say

### Dual

[App page](https://appshunter.io/ios/app/dual-n-back/id6744232772)

This cognitive training game is designed to enhance working memory through a simple yet challenging experience. It offers a clean interface with detailed history tracking and customizable gameplay and aesthetics. All data is stored locally for enhanced privacy.

**Highlights:** Working memory improvement, Detailed game history, Replay previous rounds, Gameplay customization, Aesthetic customization, Local data storage

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

**In-app purchases:** none


### PocketFlow

[App page](https://appshunter.io/ios/app/pocketflow-water-simulator/id6749147689)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 7-Day Trial | Free | one-time |
| Unlock PocketFlow | $9.99 | one-time |


## Frequently asked questions

### Is Dual free?

Dual costs $0.99, with no in-app purchases.

### Is PocketFlow free?

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

### Do Dual or PocketFlow have ads?

Neither Dual nor PocketFlow shows ads.

### Which is updated more often, Dual or PocketFlow?

Dual ships an update every 2 days, and PocketFlow weekly. Most recently, Dual was updated on October 24, 2026 and PocketFlow on October 28, 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.*