# Worm. vs StoryStack

The clearest difference is review sentiment: Worm. at 100% against StoryStack's 43%. Worm. also leads on rating (5.0 vs 4.1) and in-app purchases (none vs 4). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. StoryStack sells 4 in-app purchases, starting at $4.99 per 7 days. Worm. asks for nothing beyond the download.

Worm. holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 31 and 54 respectively. Written reviews point the same way: 100% of Worm.'s written reviews are positive against 43% of StoryStack's.

Worm. ships an update every 3 days, StoryStack every 4 days. The most recent releases landed on June 11, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Worm. | StoryStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (31 ratings)](https://appshunter.io/ios/app/worm/id6743779486/reviews)** | [4.1 (54 ratings)](https://appshunter.io/ios/app/storystack-tbr-book-tracker/id6745990061/reviews) |
| Number of ratings | 31 | **54** |
| Positive reviews | **100.0% of reviews** | 42.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 days |
| Monetization | **Free** | Freemium |
| Size | 32 MB | 101 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [David Burton](https://appshunter.io/developer/1804509855) | [Astralab Studios, Inc.](https://appshunter.io/developer/1732231934) |

## What reviewers say

### Worm.

[App page](https://appshunter.io/ios/app/worm/id6743779486)

This app helps book lovers track their reading, discover new titles, and connect with a community of fellow readers. Organize your digital bookshelf, set reading goals, and engage in discussions about your favorite books.

**Highlights:** Digital bookshelf management, Personalized reading goals, Friend activity feed, Book discovery and recommendations, User profiles and statistics, Book reviews and discussions

**Features:** macOS Compatibility

**In-app purchases:** none


### StoryStack

[App page](https://appshunter.io/ios/app/storystack-tbr-book-tracker/id6745990061)

Organize your reading list, track progress, and discover new books with smart recommendations. Features include a digital bookshelf, reading timer, and shareable review cards. Perfect for avid readers and BookTok enthusiasts.

**Highlights:** Smart book organization, AI book recommendations, Reading progress tracking, Shareable review cards, Advanced reading analytics, Offline functionality

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access | $4.99 | per 7 days |
| Premium Monthly | $5.99 | per month |
| Premium Yearly | $44.99 | per year |
| Lifetime Premium Access | $79.99 | one-time |


## Frequently asked questions

### Is Worm. free?

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

### Is StoryStack free?

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

### Which has better reviews, Worm. or StoryStack?

Worm. is rated higher. Worm. averages 5.0 out of 5 from 31 ratings, while StoryStack averages 4.1 from 54 ratings.

### Do Worm. or StoryStack have ads?

Neither Worm. nor StoryStack shows ads.

### Which is updated more often, Worm. or StoryStack?

Worm. ships an update every 3 days, and StoryStack every 4 days. Most recently, Worm. was updated on June 11, 2026 and StoryStack on September 19, 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.*