Comparison

TAN Digital vs Self Study CS

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

Head to head
About

TAN Digital

Access a vast library of authentic Catholic literature, including spiritual classics, writings of Saints, and catechetical texts. Enjoy a reverent reading experience with features like bookmarking and offline access to deepen your spiritual journey.

Highlights
  • Thousands of Catholic books and devotionals
  • Reverent reading experience
  • Day and night modes
  • Bookmark passages
  • Offline access
  • Curated collections
Features
Read full description

Here you will find a treasury of authentic Catholic works—spiritual classics, the writings of the Saints, the Fathers and Doctors of the Church, trusted catechetical texts, and devotions to guide you toward holiness. Every title is chosen to nourish souls and strengthen the life of grace. Features: Over thousands of Catholic books and devotionals A simple, reverent reading experience with day and night modes Bookmark passages for deeper reflection Offline access, so you may read anywhere Curated collections for feasts, liturgical seasons, and spiritual themes

About

Self Study CS

Features
Read full description

The best way to self-learn Computer Science — hundreds of CS topics, offline, beautifully formatted for iPhone and iPad.Self-Study CS is a focused reader for the open CS Self-Learning guide: hundreds of computer-science topics in Markdown, optimized for long reading sessions on iPhone and iPad. WHAT YOU GET • Offline catalog — Explore bundled chapters by topic; switch between English (.en.md) and Chinese primary files when both exist. • Reader built for technical text — Comfortable light, dark, and sepia themes, adjustable text size and line spacing, and a table of contents for quick jumps. • Pick up where you left off — Continue reading and per-chapter scroll progress. • Bookmarks — Save chapters and open them from one place. MY GUIDES Create your own course-style notes with optional sections inspired by the bundled template. Content is stored locally on your device in a private database—not on our servers.

Screenshots

TAN Digital4 screens
Self Study CS4 screens

Verdict

The call

The clearest difference is ads: TAN Digital at none against Self Study CS's shown. TAN Digital also leads on iOS requirement (15.1 vs 18.0). Self Study CS's advantage is update cadence (daily vs every 2 weeks). On price, in-app purchases and device support 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.

UpkeepUpdate frequency

TAN Digital ships an update every 2 weeks, Self Study CS daily. The most recent releases landed on October 10, 2026 and September 20, 2026 respectively.

Scorecard3 real differences · 7 level
TAN Digital versus Self Study CS: the parameters behind the verdict, then further details
ParameterTAN DigitalSelf Study CS
PriceFreeFree
Rating4.8 (80 ratings) — better—
Positive reviews42.9% of reviews—
Number of ratings80 — better—
Update frequencyEvery 2 weeksDaily — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better18.0
Further details — not scored
Size54 MB15 MB
Age rating4+4+
DeveloperSAINT BENDICT PRESS LLCAPPS BAY LIMITED

In-app purchases

None

TAN Digital

No in-app purchases

None

Self Study CS

No in-app purchases

Questions

Is TAN Digital free?
TAN Digital is free to download, with no in-app purchases.
Is Self Study CS free?
Self Study CS is free to download, with no in-app purchases.
Do TAN Digital or Self Study CS have ads?
Self Study CS shows ads; TAN Digital does not.
Which is updated more often, TAN Digital or Self Study CS?
TAN Digital ships an update every 2 weeks, and Self Study CS daily. Most recently, TAN Digital was updated on October 10, 2026 and Self Study CS on September 20, 2026.

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