# PocketFacts vs Duet

The clearest difference is in-app purchases: PocketFacts at none against Duet's 1. Duet's advantage is update cadence (every 10 days vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Duet sells 1 one-off in-app purchase. PocketFacts asks for nothing beyond the download.

PocketFacts ships an update every 6 weeks, Duet every 10 days. Both last shipped on November 10, 2026.

## The numbers

| Metric | PocketFacts | Duet |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 10 days** |
| Size | 16 MB | 31 MB |
| Requires iOS | **26.0** | 27.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Michael Gillbanks](https://appshunter.io/developer/6803029992) | [Conscious Engines](https://appshunter.io/developer/1876149587) |

## What reviewers say

### PocketFacts

[App page](https://appshunter.io/ios/app/pocketfacts/id6803029990)

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

**In-app purchases:** none


### Duet

[App page](https://appshunter.io/ios/app/duet-pdf-reader/id6821941148)

**Features:** iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Duet Pro Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is PocketFacts free?

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

### Is Duet free?

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

### Do PocketFacts or Duet have ads?

Neither PocketFacts nor Duet shows ads.

### Which is updated more often, PocketFacts or Duet?

PocketFacts ships an update every 6 weeks, and Duet every 10 days. Most recently, PocketFacts was updated on November 10, 2026 and Duet on November 10, 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.*