# Answer Book vs Ghost Detector

The clearest difference is ads: Ghost Detector at none against Answer Book's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Answer Book sells 1 one-off in-app purchase and Ghost Detector sells 2 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Answer Book ships an update weekly, Ghost Detector every 5 days. The most recent releases landed on October 5, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Answer Book | Ghost Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ghost-detector-ghost-box/id6806272541/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | — | Freemium |
| Size | 8 MB | 84 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Ke Tong](https://appshunter.io/developer/6773978273) | [Thirty Three Apps](https://appshunter.io/developer/1887900142) |

## What reviewers say

### Answer Book

[App page](https://appshunter.io/ios/app/answer-book-oracle-and-flip/id6799026457)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Ghost Detector

[App page](https://appshunter.io/ios/app/ghost-detector-ghost-box/id6806272541)

This app simulates paranormal investigation tools like a radar camera, spirit box, EMF meter, and EVP recorder. It helps you detect and log potential apparitions and communicate with entities. All findings are saved to a case file for later review.

**Highlights:** Radar camera with apparition detection, Spirit box with AM radio sweep, EMF meter using magnetometer, EVP recorder, Case file for evidence storage, Multi-language support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $3.99 | per 7 days |
| Premium Yearly | $24.99 | per year |


## Frequently asked questions

### Is Answer Book free?

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

### Is Ghost Detector free?

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

### Do Answer Book or Ghost Detector have ads?

Answer Book shows ads; Ghost Detector does not.

### Which is updated more often, Answer Book or Ghost Detector?

Answer Book ships an update weekly, and Ghost Detector every 5 days. Most recently, Answer Book was updated on October 5, 2026 and Ghost Detector on October 3, 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.*