# Relationship Decoder vs Spell Book

The clearest difference is in-app purchases: Spell Book at none against Relationship Decoder's 3. Spell Book also leads on iOS requirement (12.0 vs 16.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Relationship Decoder sells 3 in-app purchases, starting at $11.99 per month. Spell Book asks for nothing beyond the download.

Relationship Decoder ships an update every 7 months, Spell Book every 5 months. The most recent releases landed on September 17, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Relationship Decoder | Spell Book |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.5 (4 ratings)](https://appshunter.io/ios/app/spell-book-knowledge/id6443749311/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 months** |
| Monetization | — | Ad-supported |
| Size | 38 MB | 72 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Laurent Bottigliengo](https://appshunter.io/developer/1233984041) | [Masum Islam](https://appshunter.io/developer/1531909571) |

## What reviewers say

### Relationship Decoder

[App page](https://appshunter.io/ios/app/relationship-decoder/id1444353072)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $11.99 | per month |
| Perform 1 relationship Study | $5.99 | one-time |
| Unlimited Access | $299.99 | one-time |


### Spell Book

[App page](https://appshunter.io/ios/app/spell-book-knowledge/id6443749311)

Discover a wide range of spells, from love and protection to wealth and magic. This app organizes various spell types, offering search functionality, weather forecasts, and a bookmarking feature for easy access to your favorite incantations.

**Highlights:** Extensive spell collection, Categorized spells, Search functionality, Weather forecast integration, Bookmark spells, User comments/knowledge sharing

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

**In-app purchases:** none


## Frequently asked questions

### Is Relationship Decoder free?

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

### Is Spell Book free?

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

### Do Relationship Decoder or Spell Book have ads?

Neither Relationship Decoder nor Spell Book shows ads.

### Which is updated more often, Relationship Decoder or Spell Book?

Relationship Decoder ships an update every 7 months, and Spell Book every 5 months. Most recently, Relationship Decoder was updated on September 17, 2026 and Spell Book on October 1, 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.*