catechism.app vs Chapel Library
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
catechism.app
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.
- New City Catechism
- Westminster Catechisms
- Heidelberg Catechism
- Geneva Catechism
- Scripture proofs
- Hide answer for memorization
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Features the New City Catechism, the Westminster Shorter & Larger Catechisms, the Children's Catechism, the Heidelberg Catechism, and the Geneva Catechism. Each catechism contains questions and answers, Scripture proofs in multiple Bible versions, and a feature to hide the answer to aid in memorization.
Chapel Library
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.
- Christ-centered resources
- Centuries of sermons
- Reformed tradition books
- Puritan tradition books
- Humbling pride of man
- Exalting grace of God
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Access Chapel Library's Christ-centered resources: centuries of sermons and books from the Reformed and Puritan traditions. Each title is carefully selected for the purpose of humbling the pride of man and exalting the grace of God in salvation!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | catechism.app | Chapel Library |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (166 ratings) | 5.0 (32 ratings) — better |
| Positive reviews | 93.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 166 — better | 32 |
| Update frequency | Every 6 weeks | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 46 MB | 23 MB |
| Age rating | 4+ | 9+ |
| Developer | Deo Volente, LLC | Mt Zion Bible Church |
Customer experience
catechism.app
Chapel Library
Bugs and requests
catechism.app
Reported bugs
2 issues- iPad in silent mode error
- Screen issues fixed by update
Requested features
11 requests- Copy scripture texts
- Add Fisher’s catechism
- Add Baptist Catechism based off 2nd LBCF 1689
- Copy portions to clipboard
- Attach notes to text
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- Searchable content
- Background info on catechisms
- Add more catechisms
- Real human to read material aloud
- Share feature to text friends
- Dark mode option
Chapel Library
Not enough reviews yet to summarise bugs or requests.
In-app purchases
catechism.app
- Donation Subscription Small$1.991 Year
Chapel Library
No in-app purchases
Questions
Is catechism.app free?
Is Chapel Library free?
Which has better reviews, catechism.app or Chapel Library?
Do catechism.app or Chapel Library have ads?
Which is updated more often, catechism.app or Chapel Library?
Other comparisons
