Trach vs MentalMultiply
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Trach
Master rapid mental math with this app, offering step-by-step tutorials and practice exercises for complex calculations. Learn and practice the Trachtenberg method to sharpen your number sense and multiply faster.
- Trachtenberg method tutorials
- Practice exercises
- Progress tracking
- Mental math techniques
- Rapid multiplication
- Number sense development
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Trach is the ultimate app for learning and practicing the Trachtenberg method—a system of mental math techniques that make complex calculations quick and intuitive. With step-by-step tutorials and practice exercises, you’ll develop a deep understanding of rapid multiplication, all while sharpening your number sense. Why Trach? - Learn the Trachtenberg method at your own pace - Practice with problems of varying difficulty - Track your progress and improve over time - No ads, no distractions—just pure learning Master calculations like 172413 × 11 in seconds. Whether you're a student, a math enthusiast, or just curious about mental math tricks, Trach makes learning effortless. Download Trach today and start multiplying faster than ever.
MentalMultiply
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Mental Multiply teaches you how to multiply faster using the Trachtenberg System and powerful pattern-based mental-math techniques. Designed for students, adults, teachers, and mental-math enthusiasts, Mental Multiply turns multiplication into a practical skill you can understand, practice, and improve. Create personalized exercises based on your level and choose whether to solve the complete calculation process or focus only on the final answer. Learn Faster Multiplication Methods • Practice the Trachtenberg multiplication rules • Discover shortcuts for numbers close to 10, 20, 100, and 200 • Learn the “same tens, units add to 10” pattern • Follow clear, step-by-step explanations • Recognize useful number patterns and solve problems more efficiently Personalized Practice • Practice individual multiplication tables or combine several multipliers • Choose the number of digits in each exercise • Adjust the difficulty from beginner to advanced • Practice complete guided calculations or final answers only • Receive immediate feedback as you work Choose Your Calculation Direction Practice using: • The familiar left-to-right answer-entry direction • The Trachtenberg right-to-left working method This helps you learn the method in the way that feels most natural to you. Built for Continuous Improvement • Clean, distraction-free design • Structured practice sessions • Progress tracking and performance insights • Exercises for different experience levels • Support for multiple languages Mental Multiply is ideal for: • Students developing stronger multiplication skills • Adults who want to sharpen their mental arithmetic • Teachers demonstrating alternative calculation methods • Mental-math enthusiasts • Anyone preparing for mathematics or aptitude challenges Move beyond memorization. Learn the rules, recognize the patterns, and build the confidence to calculate faster in your head. Download Mental Multiply and start training your brain today. Some features may require an in-app purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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Verdict
Trach and MentalMultiply are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Trach sells 1 one-off in-app purchase and MentalMultiply sells 2 in-app purchases, starting at $4.99 per year. Whichever you choose, the download price is not the number that matters.
Trach ships an update every 2 weeks, MentalMultiply fortnightly. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.
| Parameter | Trach | MentalMultiply |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (13 ratings) — better | — |
| Positive reviews | 93.3% of reviews | — |
| Number of ratings | 13 — better | — |
| Update frequency | Every 2 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Giorgio Network, LLC | Oren Frenkel |
In-app purchases
Trach
- Unlock All Multiply Tutorials$4.99
MentalMultiply
- Annual Premium$4.991 Year
- Lifetime Premium$14.99








