# catechism.app vs Chapel Library

The clearest difference is in-app purchases: Chapel Library at none against catechism.app's 1. Chapel Library also leads on rating (5.0 vs 4.8) and device support (3 vs 1). catechism.app's advantage is ratings volume (166 vs 32). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. catechism.app sells 1 in-app purchase, starting at $1.99 per year. Chapel Library asks for nothing beyond the download.

Chapel Library holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: catechism.app has 166 ratings behind it against 32, so its average is the more settled of the two. Written reviews point the same way: 94% of catechism.app's written reviews are positive against 100% of Chapel Library's.

catechism.app ships an update every 6 weeks, Chapel Library every 5 weeks. The most recent releases landed on September 30, 2026 and July 5, 2026 respectively.

## The numbers

| Metric | catechism.app | Chapel Library |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (166 ratings)](https://appshunter.io/ios/app/catechismapp/id359009311/reviews) | **[5.0 (32 ratings)](https://appshunter.io/ios/app/chapel-library/id1660821361/reviews)** |
| Number of ratings | **166** | 32 |
| Positive reviews | 93.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 46 MB | 23 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Deo Volente, LLC](https://appshunter.io/developer/359009314) | [Mt Zion Bible Church](https://appshunter.io/developer/1660821363) |

## What reviewers say

### catechism.app

[App page](https://appshunter.io/ios/app/catechismapp/id359009311)

Access multiple Christian catechisms, including the New City, Westminster, Children's, Heidelberg, and Geneva. Study questions, answers, and scripture proofs with a feature to hide answers for memorization.

**Highlights:** New City Catechism, Westminster Catechisms, Heidelberg Catechism, Geneva Catechism, Scripture proofs, Hide answer for memorization

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation Subscription Small | $1.99 | per year |

**What reviewers like**

- 👍 Daily reminders for study
- 👍 Helps understand Bible
- 👍 Favorite catechism app
- 👍 Great way to review teachings
- 👍 Focuses on biblical standards

**What reviewers complain about**

- 🐛 Cannot mark questions completed
- 🐛 No way to mark where left off
- 🐛 Not organized well
- 🐛 Doesn't play sound
- 🐛 Stuck on screen

**Reported bugs**

- iPad in silent mode error
- Screen issues fixed by update

**Requested features**

- Copy scripture texts
- Add Fisher’s catechism
- Add Baptist Catechism based off 2nd LBCF 1689
- Copy portions to clipboard
- Attach notes to text


### Chapel Library

[App page](https://appshunter.io/ios/app/chapel-library/id1660821361)

Explore centuries of Christ-centered sermons and books from Reformed and Puritan traditions. This collection focuses on humbling humanity and exalting God's grace in salvation.

**Highlights:** Christ-centered resources, Centuries of sermons, Reformed tradition books, Puritan tradition books, Humbling pride of man, Exalting grace of God

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is catechism.app free?

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

### Is Chapel Library free?

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

### Which has better reviews, catechism.app or Chapel Library?

Chapel Library is rated higher. catechism.app averages 4.8 out of 5 from 166 ratings, while Chapel Library averages 5.0 from 32 ratings.

### Do catechism.app or Chapel Library have ads?

Neither catechism.app nor Chapel Library shows ads.

### Which is updated more often, catechism.app or Chapel Library?

catechism.app ships an update every 6 weeks, and Chapel Library every 5 weeks. Most recently, catechism.app was updated on September 30, 2026 and Chapel Library on July 5, 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.*