Comparison

Calculator AI vs EPUB Reader

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

Head to head
About

Calculator AI

Features
Read full description

Need help with math? Whether you're doing homework, crunching numbers, or solving tricky equations, Calculator AI has your back. It’s more than just a calculator — it's your all-in-one math tool with powerful features like a scientific calculator, photo math solver, and AI tutor. Key features: + Calculator for everything from basic math to advanced calculus + Advanced scientific calculator with powerful functions and conversions + Photo math solver – just snap a picture and get instant solutions + AI homework helper with step-by-step explanations + Learn algebra, functions, and more with guided support + Handles complex equations and helps you build your skills Whether you need a quick calculation, detailed help, or a smart math companion, Calculator AI is here to make math simple, fast, and accurate. Download now and experience how easy math can be with AI. -------- Subscription payments will be charged to your iTunes account at confirmation of your purchase and upon commencement of each renewal term. The free trial period will automatically renew to a paid subscription. You can cancel in the iTunes settings at least 24-hours before the end of each current subscription period. The cancellation will take effect the day after the last day of the current subscription period, and you will be downgraded to the free service. Any unused portion of a free trial period (if offered) will be forfeited when you purchase a premium subscription during the free trial period. TERMS: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

EPUB Reader

Features
Read full description

Discover Knowledge, Capture Thoughts —— Your Intelligent Reading Companion Epub Reader is an e-book reader designed for avid readers and learners.  We focus on delivering a clean reading experience and powerful note-taking tools, helping you efficiently capture insights and organize your thoughts. Key Features: Multi-format Support: Seamlessly import EPUB and PDF e-books, and read anytime, anywhere. Smart Highlighting: Easily mark key content with customizable highlight colors for clear visualization. Annotation Notes: Add personal notes to your highlights, preserving your thoughts and ideas in context. AI-Powered Query: Intelligently query highlighted content for quick explanations, expanded knowledge, or in-depth analysis, making reading more productive. Cloud Sync: Notes and highlights are automatically saved to the cloud, enabling cross-device access so you can pick up where you left off. Superior Reading Experience: A minimalist interface, comfortable typography, and customizable reading modes ensure you stay focused on what matters. Whether for study, work, or research, Epub Reader is your trusted partner in knowledge management. —Subscription Plans & Auto-Renewal Info Flexible Subscription Plans for Every Need! Choose the perfect plan for your goals with our diverse subscription options: * 1 Week: Short-term flexibility * 1 Month: Ideal for project-based users * 1 Year: Best value for committed users * Lifetime: One-time purchase, forever access —Auto-Renewal Details: * Payment will be charged to your iTunes Account at confirmation of purchase. * Subscriptions are billed weekly, monthly, bi-monthly, quarterly, semi-annually, or annually based on your chosen plan. * Subscriptions auto-renew within 24 hours before the current period ends (except Lifetime). * Renewal charges will be processed within 24 hours before the end of the current period, with the cost depending on your selected plan. * Manage subscriptions or turn off auto-renewal anytime via your Apple ID Account Settings. —Lifetime Membership Perks: * Pay once, unlock all features forever—no renewals, no hassle! Note: * Manage subscriptions at: Settings > [Your Name] > Subscriptions — Privacy Policy please visit: https://docs.qq.com/doc/DREt1SXJkbG9JYUFT * **Terms of use (EULA): * https://docs.qq.com/doc/DREdKR2ZwYUJaa1hr * **Terms of apple please visit: * https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ * Questions? Contact us at: https://x.com/createeem

Screenshots

Calculator AI4 screens
EPUB Reader4 screens

Verdict

The call

The clearest difference is price: Calculator AI at Free against EPUB Reader's $0.99. Calculator AI also leads on update cadence (every 8 days vs every 3 months). On ads, in-app purchases, 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

Calculator AI is free to download; EPUB Reader costs $0.99 up front. Calculator AI sells 2 in-app purchases, starting at $9.99 per 7 days and EPUB Reader sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Calculator AI ships an update every 8 days, EPUB Reader every 3 months. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 4 level
Calculator AI versus EPUB Reader: the parameters behind the verdict, then further details
ParameterCalculator AIEPUB Reader
PriceFree — better$0.99
Update frequencyEvery 8 days — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone, iPad — better
Requires iOS17.0 — better17.6
Further details — not scored
Size11 MB15 MB
Age rating4+4+
DeveloperAya Labs B.V.乐祥 胡

In-app purchases

2 purchases

Calculator AI

Subscriptions2
  • Calculator AI Pro3 Days trial$9.997 Days
  • Calculator AI Pro7 Days trial$9.997 Days
3 purchases

EPUB Reader

Subscriptions2
  • Insight Reader Premium - weekly$0.997 Days
  • Insight Reader Premium - yearly$39.991 Year
One-time1
  • EPUB365 Premium - lifetime$59.99

Questions

Is Calculator AI free?
Calculator AI is free to download, with in-app purchases available.
Is EPUB Reader free?
EPUB Reader costs $0.99, and also offers in-app purchases.
Do Calculator AI or EPUB Reader have ads?
Neither Calculator AI nor EPUB Reader shows ads.
Which is updated more often, Calculator AI or EPUB Reader?
Calculator AI ships an update every 8 days, and EPUB Reader every 3 months. Most recently, Calculator AI was updated on October 24, 2026 and EPUB Reader on October 30, 2026.

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