# Plot Spark vs Off Book

The clearest difference is in-app purchases: Plot Spark at none against Off Book's 3. Off Book's advantage is update cadence (every 2 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Off Book sells 3 in-app purchases, starting at $7.99 per 7 days. Plot Spark asks for nothing beyond the download.

Plot Spark ships an update every 2 months, Off Book every 2 days. The most recent releases landed on October 28, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Plot Spark | Off Book |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/off-book-run-lines/id6803744623/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 25 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tobias Reithmeier](https://appshunter.io/developer/1882860698) | [KELVIN SENANU WALLACE](https://appshunter.io/developer/1888050842) |

## What reviewers say

### Plot Spark

[App page](https://appshunter.io/ios/app/plot-spark/id6760355038)

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

**In-app purchases:** none


### Off Book

[App page](https://appshunter.io/ios/app/off-book-run-lines/id6803744623)

This app helps actors memorize lines and rehearse scenes by providing character-specific dialogue playback. Users can paste, scan, or load scripts, then practice speaking their lines aloud while the app cues them. It offers features to hide lines for memory testing and drill difficult sections.

**Highlights:** Paste or scan scripts, AI-powered auto-casting, Character voice playback, Hide lines for memory tests, Drill difficult lines, Save scenes to library

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Access for a week | $7.99 | per 7 days |
| All Access for a year | $39.99 | per year |
| All Access Forever | $69.99 | one-time |


## Frequently asked questions

### Is Plot Spark free?

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

### Is Off Book free?

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

### Do Plot Spark or Off Book have ads?

Neither Plot Spark nor Off Book shows ads.

### Which is updated more often, Plot Spark or Off Book?

Plot Spark ships an update every 2 months, and Off Book every 2 days. Most recently, Plot Spark was updated on October 28, 2026 and Off Book on October 22, 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.*