Comparison

Calvin Opera vs The Divine Comedy

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

Head to head
About

Calvin Opera

Access the complete writings of John Calvin with fast search capabilities and an integrated Latin dictionary. This comprehensive collection is a primary resource for studying Calvin's extensive theological works.

Highlights
  • Complete Works of John Calvin
  • Fast search functionality
  • Integrated Latin dictionary
  • Primary source for Calvin studies
  • Organized by volume and content type
Features
Read full description

The ‘Complete Works of Calvin’ refers to ‘Ioannis Calvini opera quae supersunt omnia’ (‘All Surviving Works of John Calvin’), which were edited between 1863 and 1900 by Johann Wilhelm Baum, August Eduard Cunitz and Eduard Reuss, and were published in 59 volumes. As the title indicates, it is a collection of all the writings of Calvin which had survived up to that time. The ‘Complete Works of Calvin’ is commonly abbreviated to ‘CO’(Calvini Opera), but is also abbreviated to ‘CR’ because it forms vols. 29-87 of the ‘Corpus Reformatorum,’ which also includes the works of Reformers Philip Melanchthon and Huldrich Zwingli. Thus, the first volume of the ‘Complete Works of Calvin’ can be referred to as ‘CO 1’ or ‘CR 29.’ The ‘Complete Works of Calvin’ remains the best primary source for the study of Calvin. Since 1992, critical editions of Calvin’s works have been published, starting with ‘Opera Exegetica: Commentarii in Pauli Epistolas ad Galatas, ad Ephesios, ad Philippenses, ad Colossenses,’ ed. Helmut Feld (Geneva: Librairie Droz, 1992). This task is being undertaken by an international committee of members of the finest quality, affiliated with the International Congress on Calvin Research. The contents of the ‘Complete Works of Calvin’ are as follows: Vols. 1-4 contain the Institutes of the Christian Religion, Vols. 5-9 mainly short treatises, 10-20 Epistles, 21 the lives of Calvin, 22 the indices of vols. 1-21, 23-44 Old Testament commentaries and sermons, 45-55 New Testament commentaries and sermons, 56-57 Calvin’s French Bible, 58-9 additional sermons and indices to vols. 23-55. This App enables fast searches of the ‘Complete Works of Calvin’ and contains an easy-to-use Latin dictionary. This is the combined works of two organizations, PartPrime and KIRS(Korean Institute for Reformed Studies).

About

The Divine Comedy

Explore Dante Alighieri's epic poem with digital access to Inferno, Purgatorio, and Paradiso. View original Italian texts and popular translations, enhanced by Gustave Doré's detailed etchings.

Highlights
  • Complete Divine Comedy text
  • Inferno, Purgatorio, Paradiso
  • Original Italian texts
  • Mandelbaum translation
  • Longfellow translation
  • Gustave Doré etchings
  • Zoomable artwork
Features
Read full description

The complete Divine Comedy — Inferno, Purgatorio, and Paradiso — in digital format. The app features the original Italian text alongside the celebrated translations by Mandelbaum and Longfellow, viewable by swiping horizontally through each canto. Artwork in the form of etchings by Gustave Doré has been added to every canto, and can be zoomed in to see the smallest details. FEATURES All 100 cantos of Inferno, Purgatorio, and Paradiso Original Italian text alongside the Mandelbaum and Longfellow translations Classic Gustave Doré etchings for every canto, zoomable down to the finest detail A clean, distraction-free reading experience designed for long-form reading Long cantos display in full — nothing is ever cut short Whether you're studying Dante for the first time or returning to this masterpiece of world literature, Divine Comedy gives you the text, the translations, and the artwork in one elegant app.

Screenshots

Calvin Opera4 screens
The Divine Comedy4 screens

Verdict

The call

The clearest difference is price: The Divine Comedy at $2.99 against Calvin Opera's $15.99. The Divine Comedy also leads on rating (5.0 vs 1.0). On ratings volume, update cadence, ads and in-app purchases 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

Calvin Opera costs $15.99 and The Divine Comedy $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

The Divine Comedy holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

Calvin Opera ships an update every 9 months, The Divine Comedy every 4 months. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.

Scorecard2 real differences · 8 level
Calvin Opera versus The Divine Comedy: the parameters behind the verdict, then further details
ParameterCalvin OperaThe Divine Comedy
Price$15.99$2.99 — better
Rating1.0 (1 ratings)5.0 (2 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings12 — better
Update frequencyEvery 9 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.5
Further details — not scored
Size1.6 GB319 MB
Age rating4+9+
Developerjeong youngohBart Beekwilder

Customer experience

Calvin Opera

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

The Divine Comedy

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Calvin Opera

No in-app purchases

None

The Divine Comedy

No in-app purchases

Questions

Is Calvin Opera free?
Calvin Opera costs $15.99, with no in-app purchases.
Is The Divine Comedy free?
The Divine Comedy costs $2.99, with no in-app purchases.
Which has better reviews, Calvin Opera or The Divine Comedy?
The Divine Comedy is rated higher. Calvin Opera averages 1.0 out of 5 from 1 ratings, while The Divine Comedy averages 5.0 from 2 ratings.
Do Calvin Opera or The Divine Comedy have ads?
Neither Calvin Opera nor The Divine Comedy shows ads.
Which is updated more often, Calvin Opera or The Divine Comedy?
Calvin Opera ships an update every 9 months, and The Divine Comedy every 4 months. Most recently, Calvin Opera was updated on October 7, 2026 and The Divine Comedy on October 15, 2026.

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