Comparison

ISBN vs SlowRead

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

Head to head
About

ISBN

Features
Read full description

ISBN資料庫收錄了台灣完整書籍資料,透過搜尋名稱或掃描ISBN書碼查找書籍,對比線上書店價格。

About

SlowRead

Features
Read full description

SlowRead — A daily passage from the world's greatest books Take 5 minutes each day to immerse yourself in classic literature. A DAILY PASSAGE, A LASTING HABIT Receive one carefully selected passage every day — just enough to savor the beauty of great writing. No pressure, no rush. Day by day, you'll finish entire masterpieces. WORLD CLASSICS AT YOUR FINGERTIPS From Dream of the Red Chamber to Shakespeare, from Natsume Soseki to Akutagawa Ryunosuke — explore 100+ classics in Chinese, English, and Japanese, with more titles added regularly. BILINGUAL SIDE BY SIDE Read in dual-language mode to enjoy the original text while effortlessly understanding every passage. AI READING COMPANION Your AI companion provides story recaps, character maps, and cultural context to help you explore the historical background and cultural significance of classic works. Toggle it off anytime for a distraction-free reading experience. READING STREAKS Track your daily reading streak. Like a fitness tracker for your mind, make reading your daily ritual. Pro users can freeze their streak to stay protected on off days. IMMERSIVE READING EXPERIENCE A thoughtfully designed ink-inspired theme with comfortable serif typography creates a reading experience that feels like turning real pages. Dark mode supported. SHARE YOUR ACHIEVEMENTS Earn beautiful reading certificates when you finish a book. Share your reading milestones and streaks with friends. Start your journey through the classics. One passage a day. Read slowly. SUBSCRIPTION INFORMATION SlowRead Pro offers monthly ($3.99/mo), yearly ($29.99/yr), and lifetime ($79.99) plans. A 7-day free trial is available for new subscribers. Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your Apple ID account settings. Terms of Use: https://slowread.xyz/terms Privacy Policy: https://slowread.xyz/privacy

Screenshots

ISBN3 screens
SlowRead4 screens

Verdict

The call

The clearest difference is in-app purchases: ISBN at none against SlowRead's 2. SlowRead's advantage is ads (none vs shown) and update cadence (fortnightly vs every 4 months). On price, device support and iOS requirement 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. SlowRead sells 2 in-app purchases, starting at $3.99 per month. ISBN asks for nothing beyond the download.

UpkeepUpdate frequency

ISBN ships an update every 4 months, SlowRead fortnightly. The most recent releases landed on October 2, 2026 and September 29, 2026 respectively.

Scorecard3 real differences · 3 level
ISBN versus SlowRead: the parameters behind the verdict, then further details
ParameterISBNSlowRead
PriceFreeFree
Update frequencyEvery 4 monthsFortnightly — better
AdsYesNo — better
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.1
Further details — not scored
Size16 MB66 MB
Age rating4+4+
Developer剑秋 肖T-PLUS Ltd

In-app purchases

None

ISBN

No in-app purchases

2 purchases

SlowRead

Subscriptions2
  • SlowRead Pro$3.991 Month
  • SlowRead Pro$29.991 Year

Questions

Is ISBN free?
ISBN is free to download, with no in-app purchases.
Is SlowRead free?
SlowRead is free to download, with in-app purchases available.
Do ISBN or SlowRead have ads?
ISBN shows ads; SlowRead does not.
Which is updated more often, ISBN or SlowRead?
ISBN ships an update every 4 months, and SlowRead fortnightly. Most recently, ISBN was updated on October 2, 2026 and SlowRead on September 29, 2026.

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