Comparison

Heidelberg Catechism (RCUS) vs Reformed Reader Plus

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Heidelberg Catechism (RCUS)

This app aids in memorizing the Heidelberg Catechism with three distinct study modes. Track your progress, practice questions individually, and test your knowledge with customizable quizzes. It offers a structured approach to learning the 129 questions and answers.

Highlights
  • Sequential review of all questions and answers
  • Mark questions as mastered
  • Practice questions individually with hints
  • Filter questions by mastered/unmastered
  • Randomized quizzes with customizable ranges
  • Quiz exclusively on mastered questions
Read full description

The Heidelberg Catechism app provides three tabs to help you memorize all 129 questions and answers of the 2025 RCUS Modern English Edition of the Heidelberg Catechism: 1) Review Tab Browse the complete catechism sequentially. Each question displays its full answer for reading and initial memorization. Mark questions as mastered to track your progress. 2) Practice Tab Study questions one at a time with guided assistance. Filter the list by All, Mastered, or Unmastered questions, then tap any question to practice it. Use the Hint or Show Answer buttons to check your recall, and navigate to the previous or next question in your filtered set without returning to the list. Mark questions as mastered as you go. 3) Quiz Tab Test your knowledge with randomly selected questions. Configure a question range to focus on a specific subset, or enable Only Include Mastered to quiz yourself exclusively on questions you've already marked as mastered. Use the Hint and Show Answer buttons to check your answer, and mark questions as mastered directly from the quiz. Text of the Heidelberg Catechism copyrighted 2025 by RCUS. Used with Permission. Icon background image by Aaron Burden.

About

Reformed Reader Plus

Explore the core tenets of Reformed theology with a curated library of confessions and catechisms. Features include easy navigation, scripture proofs, memory functions, and advanced search capabilities for in-depth study.

Highlights
  • Curated Reformed confessions and catechisms
  • Easy navigation and intuitive interface
  • Scripture proofs for theological doctrines
  • Memory features for saving favorite sections
  • Advanced search for themes and doctrines
Features
Read full description

Discover the depth and richness of Reformed theology with our innovative app, designed to bring the timeless truths of Reformed confessions and catechisms right to your fingertips. Access a curated collection of Reformed confessions and catechisms, including the Westminster Confession of Faith, Heidelberg Catechism, and more. -Easy Navigation: Seamlessly explore the documents with an intuitive interface, making it simple to find and read specific sections or topics. -Scripture Proofs: Dive deeper into the foundational scripture proofs supporting each confession and catechism, enhancing your understanding and study. -Memory Features: Save your favorite sections and bookmark key passages for quick reference and ongoing reflection. -Dig Deeper: Utilize advanced search options to explore specific themes, doctrines, or scriptural references across the entire library.

Screenshots

Heidelberg Catechism (RCUS)4 screens
Reformed Reader Plus4 screens

Verdict

The call

The clearest difference is update cadence: Reformed Reader Plus at every 4 months against Heidelberg Catechism (RCUS)'s every 38 months. On price, rating, ratings volume 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Heidelberg Catechism (RCUS) against 5.0 for Reformed Reader Plus. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

Heidelberg Catechism (RCUS) ships an update every 38 months, Reformed Reader Plus every 4 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

Scorecard1 real difference · 9 level
Heidelberg Catechism (RCUS) versus Reformed Reader Plus: the parameters behind the verdict, then further details
ParameterHeidelberg Catechism (RCUS)Reformed Reader Plus
PriceFreeFree
Rating5.0 (2 ratings)5.0 (1 ratings)
Positive reviews50.0% of reviews—
Number of ratings2 — better1
Update frequencyEvery 38 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size4 MB32 MB
Age rating4+4+
DeveloperAndrew DirksKenneth Brown

Customer experience

Heidelberg Catechism (RCUS)

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

Reformed Reader Plus

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Heidelberg Catechism (RCUS)

No in-app purchases

None

Reformed Reader Plus

No in-app purchases

Questions

Is Heidelberg Catechism (RCUS) free?
Heidelberg Catechism (RCUS) is free to download, with no in-app purchases.
Is Reformed Reader Plus free?
Reformed Reader Plus is free to download, with no in-app purchases.
Which has better reviews, Heidelberg Catechism (RCUS) or Reformed Reader Plus?
Heidelberg Catechism (RCUS) and Reformed Reader Plus are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do Heidelberg Catechism (RCUS) or Reformed Reader Plus have ads?
Neither Heidelberg Catechism (RCUS) nor Reformed Reader Plus shows ads.
Which is updated more often, Heidelberg Catechism (RCUS) or Reformed Reader Plus?
Heidelberg Catechism (RCUS) ships an update every 38 months, and Reformed Reader Plus every 4 months. Most recently, Heidelberg Catechism (RCUS) was updated on November 2, 2026 and Reformed Reader Plus on October 30, 2026.

Other comparisons