Worldly Wisdom vs Mental Math Gym
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Worldly Wisdom
Instantly generate AI-powered books on any subject, with options to read or listen. Save time by digesting complex information quickly and access content offline. Highlight key insights and share summaries with others.
- AI-powered book generation
- Text-to-speech narration
- Offline access
- Highlight key insights
- Shareable summaries
- Hands-free learning
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Type any topic and Worldly Wisdom creates a clear, structured audiobook in seconds. Read it, listen to it, or do both at once. Wondering how black holes form, why Rome fell, or what stoicism really teaches? Ask a question, name a subject, or enter a book title. Your AI tutor writes a focused, easy-to-follow book and narrates it in a natural voice. WHY PEOPLE LOVE WORLDLY WISDOM • Learn anything on demand: history, science, philosophy, psychology, business, technology, and more. • Read and listen together: text follows the narration so ideas stick. • Hands-free learning: listen while you commute, cook, walk, or work out. • Knowledge Gems: highlight key ideas and revisit them in an organized feed. • Works offline: books and audio stay available, even in Airplane Mode. • Private by design: no account required, and your library stays on your device. • Share smarter: send a book to a friend so they can open it right in the app. HOW IT WORKS 1. Enter a topic, question, or book title. 2. AI writes a concise book and creates audio narration. 3. Read along or listen, and collect Knowledge Gems as you go. 4. Pause anytime and pick up right where you left off. GREAT FOR • Curious minds who want to learn something new every day • Students reviewing a subject before class or an exam • Busy people who prefer audio lessons over long reads • English learners practicing listening and reading together Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://anthonyharveyapps.com/privacy-policy-worldly-wisdom
Mental Math Gym
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Mental Math Gym helps you build faster, more confident number sense through short daily workouts designed for real life. Instead of drills that feel academic or childish, Mental Math Gym focuses on practical mental math—percentages, discounts, tips, and everyday calculations—so you can think clearly and quickly without a calculator. Each session takes just a few minutes, making it easy to stay consistent and track real improvement over time. Key Features • Daily Workouts – One focused session per day to build consistency • Practice Anytime (Pro) – Unlimited custom practice sessions • Difficulty Levels – Beginner, Sharp, and Expert modes • Real-World Math – Percentages, money math, and practical scenarios • Streak Tracking – Build a daily habit and see your progress • Clean, Distraction-Free Design – Built for adults, not gimmicks Pro Lifetime Unlock unlimited practice sessions with a one-time lifetime purchase. No subscriptions. No recurring fees. Whether you want to stay sharp, improve confidence with numbers, or simply keep your mind active, Mental Math Gym provides a calm, practical way to train mental math every day.
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Verdict
The clearest difference is update cadence: Worldly Wisdom at monthly against Mental Math Gym's every 2 months. On price, ads, 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
Both are free to download. Worldly Wisdom sells 3 in-app purchases, starting at $3.99 per 7 days and Mental Math Gym sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Worldly Wisdom ships an update monthly, Mental Math Gym every 2 months. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.
| Parameter | Worldly Wisdom | Mental Math Gym |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Number of ratings | 4 — better | — |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.0 — better | 26.2 |
| Further details — not scored | ||
| Size | 17 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Anthony Harvey | JTM |
In-app purchases
Worldly Wisdom
- Knowledge Unlock Weekly3 Days trial$3.997 Days
- Knowledge Unlock Monthly7 Days trial$4.991 Month
- Knowledge Unlock Yearly7 Days trial$28.991 Year
Mental Math Gym
- Pro Lifetime$14.99









