# Sprokbook vs Expose

The clearest difference is price: Sprokbook at Free against Expose's $3.99. Sprokbook also leads on update cadence (daily vs every 3 weeks). Expose's advantage is iOS requirement (16.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Sprokbook is free to download; Expose costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sprokbook ships an update daily, Expose every 3 weeks. The most recent releases landed on October 6, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Sprokbook | Expose |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Every 3 weeks |
| Size | 16 MB | 5 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | +4 |
| Developer | [琦琪 徐](https://appshunter.io/developer/1540108126) | [Aditya Wirayudha](https://appshunter.io/developer/830166045) |

## What reviewers say

### Sprokbook

[App page](https://appshunter.io/ios/app/sprokbook/id6760282935)

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

**In-app purchases:** none


### Expose

[App page](https://appshunter.io/ios/app/expose-exposure-calculator/id6760650330)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sprokbook free?

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

### Is Expose free?

Expose costs $3.99, with no in-app purchases.

### Do Sprokbook or Expose have ads?

Neither Sprokbook nor Expose shows ads.

### Which is updated more often, Sprokbook or Expose?

Sprokbook ships an update daily, and Expose every 3 weeks. Most recently, Sprokbook was updated on October 6, 2026 and Expose on September 29, 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.*