# Caliphates Encyclopedia vs Vocab

The clearest difference is price: Vocab at Free against Caliphates Encyclopedia's $0.99. Caliphates Encyclopedia's advantage is update cadence (every 5 weeks vs every 16 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Vocab is free to download; Caliphates Encyclopedia costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Caliphates Encyclopedia ships an update every 5 weeks, Vocab every 16 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | Caliphates Encyclopedia | Vocab |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 16 months |
| Size | 82 MB | 25 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [FadiSoft Inc.](https://appshunter.io/developer/721334526) | [Asadbek Noyibjonov](https://appshunter.io/developer/1716582336) |

## What reviewers say

### Caliphates Encyclopedia

[App page](https://appshunter.io/ios/app/caliphates-encyclopedia/id897762220)

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

**In-app purchases:** none


### Vocab

[App page](https://appshunter.io/ios/app/vocab-study-with-flashcards/id6633439973)

**In-app purchases:** none


## Frequently asked questions

### Is Caliphates Encyclopedia free?

Caliphates Encyclopedia costs $0.99, with no in-app purchases.

### Is Vocab free?

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

### Do Caliphates Encyclopedia or Vocab have ads?

Neither Caliphates Encyclopedia nor Vocab shows ads.

### Which is updated more often, Caliphates Encyclopedia or Vocab?

Caliphates Encyclopedia ships an update every 5 weeks, and Vocab every 16 months. Most recently, Caliphates Encyclopedia was updated on October 25, 2026 and Vocab on October 25, 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.*