Comparison

Croc 24 vs Jinshu Reader

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

Head to head
About

Croc 24

This app offers a fun way to practice and master the 24 game. It features a free calculator for finding solutions, a challenge mode for testing skills, and a history tracker to monitor progress. Enjoy a delightful and ad-free mathematical adventure.

Highlights
  • Free calculator for finding all solutions
  • Challenge mode with random puzzles
  • History tracker for progress monitoring
  • Powerful mathematical algorithm
  • Adorable and intuitive interface
  • Ad-free gaming experience
Features
Read full description

Welcome to Croc's 24-Point Kingdom! Remember those fun times playing the 24 game with friends? Now our adorable croc buddy brings back that pure joy of mathematical discovery! Three Amazing Game Modes: • Free Calculator: Enter any 4 numbers and Croc instantly finds ALL possible solutions to make 24! No more head-scratching moments~ • Challenge Mode: Random 24-point puzzles test your math skills. Every question is a new challenge! • History Tracker: Review your calculation journey and witness your evolution from 24-game rookie to math champion! Why Choose Croc 24? • Powerful Algorithm: Advanced mathematical engine ensures every possible solution is found • Adorable Interface: Cute croc expressions make boring math absolutely delightful • Simple Operation: Intuitive touch interface suitable for all ages • Completely Free: No ads, pure gaming experience More than just a game: • Perfect math thinking trainer • Mental calculation skill booster • Fun family bonding tool • Your best companion for leisure time Join Croc on this amazing 24-point adventure! Let's make math fun and calculation joyful! Download now and start your 24-point quest!

About

Jinshu Reader

This app helps English learners by automatically annotating unfamiliar words with translations and pronunciation. It also offers text-to-speech, spaced repetition flashcards, and customizable reading settings for an enhanced learning experience.

Highlights
  • Automatic vocabulary annotations
  • Spaced repetition flashcards
  • Neural text-to-speech
  • Offline reading and playback
  • Customizable reading themes and typography
  • Import EPUB, PDF, Markdown, and web URLs
  • iCloud sync
Read full description

Jinshu is a level-aware EPUB reader designed for English language learners. Import any English book, see whether it is Comfort, Good Challenge, or Hard for your current level, then read with automatic vocabulary annotations — translations appear right where you need them, filtered to your proficiency level. Smart Vocabulary Annotations Words are automatically annotated with translations in Chinese, Korean, or Japanese. Choose your display style: ruby text above words, inline parentheses, or tap-to-reveal. Set your CEFR level (A1–C2), preview repeated above-level words before reading, and only see vocabulary appropriate for your stage. Tap to Pronounce & Listen Tap any annotated word to hear it spoken aloud and see a small IPA tip; open the full detail only when you want translation, replay, and vocabulary actions. Or let the app read entire chapters aloud with sentence highlighting, adjustable speed, sleep timer, and background playback. Works completely offline. A Reader You'll Actually Enjoy Five reading themes (Light, Sepia, Dark, Calm, Slate), adjustable fonts, spacing, margins, and text alignment. Everything updates instantly — no reload needed. Platform-native fonts: Charter, New York, Palatino, and more on iOS. Import your own .ttf or .otf fonts for a fully personalized reading experience. Vocabulary That Comes From Your Reading Saved words keep the original sentence from the chapter where you met them. A "From Reading" queue surfaces words you've actually encountered, ranked by how often they came up in your last 30 days of reading. FSRS-based review cards turn that queue into a small daily review — no curriculum, no frequency list, just your books. Your Library, Organized A smart bookshelf that puts your current read front and center. Organize books into collections, search by title or author, sort by recent, title, or author. Track your reading streaks and daily reading time. Home Screen widgets surface a daily word, a random highlight, or due reviews without opening the app. Highlights & Bookmarks Select text to highlight in five colors with two styles. Add notes to any highlight. Bookmark pages and jump back to them anytime. Search within chapters to find what you're looking for. Built-in Dictionary ~30,000 English words with CEFR levels, IPA pronunciation, and translations in three languages. No internet required for the bundled dictionary — everything works offline. Features at a Glance • EPUB 2 & 3 support • Vocabulary annotations in 中文, 한국어, 日本語 • CEFR level filtering (A1–C2) • "From Reading" candidate queue with source-sentence context • Offline word pronunciation & full chapter TTS with sentence highlighting • 5 reading themes + full typography controls + custom font import • Highlights, notes, and bookmarks • Collections and smart sorting • Reading streaks and session tracking • iPhone & iPad Home Screen widgets • Multi-book import with duplicate detection • UI in English, 中文, 한국어, 日本語 • No account required, no ads, fully offline reading FREE VS PREMIUM Free • 8 EPUB imports • A1–A2 / HSK 1–2 / JLPT N5–N4 / TOPIK 1–2 annotations • 50 saved words • 2 reading themes Premium • Unlimited imports — EPUB, PDF, Markdown, URL • All proficiency levels (A1–C2 / HSK 1–6 / JLPT N5–N1 / TOPIK 1–6) • Unlimited saved vocabulary • Anki export • 5 reading themes • Customizable read-aloud (voice, speed, sleep timer, background playback) • Custom font import • iCloud sync across devices • LAN transfer between your devices Plans: Monthly / Yearly / Lifetime Terms of Use: https://jinshu.built4.fun/terms Privacy Policy: https://jinshu.built4.fun/privacy

Screenshots

Croc 244 screens
Jinshu Reader4 screens

Verdict

The call

The clearest difference is rating: Croc 24 at 5.0 against Jinshu Reader's 4.4. Jinshu Reader's advantage is update cadence (every 6 days vs every 3 weeks) and ratings volume (11 vs 2). On price, ads, in-app purchases and monetization model 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. Croc 24 sells 1 one-off in-app purchase and Jinshu Reader sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Croc 24 holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Jinshu Reader has 11 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Croc 24 ships an update every 3 weeks, Jinshu Reader every 6 days. The most recent releases landed on October 16, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
Croc 24 versus Jinshu Reader: the parameters behind the verdict, then further details
ParameterCroc 24Jinshu Reader
PriceFreeFree
Rating5.0 (2 ratings) — better4.4 (11 ratings)
Positive reviews—75.0% of reviews
Number of ratings211 — better
Update frequencyEvery 3 weeksEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.0 — better
Further details — not scored
Size23 MB170 MB
Age rating4+4+
DeveloperWei Wang建锋 林

Customer experience

Croc 24

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

Jinshu Reader

All ratings11 ratings
Positive81.8%
Neutral9.1%
Negative9.1%
Written reviews8 reviews
Positive75.0%
Neutral12.5%
Negative12.5%

In-app purchases

1 purchases

Croc 24

One-time1
  • Unlock Premium$1.99
3 purchases

Jinshu Reader

Subscriptions2
  • Jinshu Premium Monthly$2.991 Month
  • Jinshu Premium Yearly$19.991 Year
One-time1
  • Jinshu Premium Lifetime$29.99

Questions

Is Croc 24 free?
Croc 24 is free to download, with in-app purchases available.
Is Jinshu Reader free?
Jinshu Reader is free to download, with in-app purchases available.
Which has better reviews, Croc 24 or Jinshu Reader?
Croc 24 is rated higher. Croc 24 averages 5.0 out of 5 from 2 ratings, while Jinshu Reader averages 4.4 from 11 ratings.
Do Croc 24 or Jinshu Reader have ads?
Neither Croc 24 nor Jinshu Reader shows ads.
Which is updated more often, Croc 24 or Jinshu Reader?
Croc 24 ships an update every 3 weeks, and Jinshu Reader every 6 days. Most recently, Croc 24 was updated on October 16, 2026 and Jinshu Reader on October 25, 2026.

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