Partial Product Multiplication vs Rectangles & Primes
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Partial Product Multiplication
This educational tool teaches and reinforces the partial products multiplication method. It offers an intuitive, interactive interface with customizable settings and animations to illustrate step-by-step understanding. Designed to help students grasp multiplication strategies.
- Teaches partial products multiplication method
- Interactive and intuitive interface
- Customizable colors and settings
- Animations for step-by-step understanding
- Supports custom and random problems
- Adjustable difficulty levels
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Partial Products Multiplication helps students learn and practice the partial products multiplication method step by step. The app gives students a visual way to multiply numbers by breaking the problem into smaller partial products. The partial products are then added to find the final answer. Students can solve randomly generated problems or enter their own multiplication problems. The Partial Products Method: In the partial products method, each place value is multiplied separately. For example, in 39 × 24, the partial products are 36, 120, 180, and 600. These are then added together to get the final answer: 936. Teacher endorsements: “The math apps by Esa Helttula allow students to practice and reinforce the specific computation strategies taught in class, with as much or as little scaffolding as necessary. They also provide individualized feedback to each student, with an immediacy that is not always possible through pencil and paper practice.” — R. Zeni, Ecole Sandy Hill Elementary, Abbotsford, BC, Canada “There are students who see my examples who still need some guidance, and after using your app have said, ‘Now I get it.’ The feature of selecting possible solutions in each step helps some of my students who are still building their multiplication facts.” — Z. R. Prowell, Highlands Elementary, Edina, Minnesota, USA Easy to Use: The numbers are aligned automatically so students can focus on solving each step. After the student solves each partial product, the correct answer moves into the right place. If the student presses the wrong button, the answer appears above the keyboard but does not move. Features: - Step-by-step partial products multiplication practice - Each number can have 2–3 digits - Randomly generated or manually entered problems - Current operation can be hidden - Operands of the current operation can be highlighted - Customizable interface colors - Adjustable animation speed Other iDevBooks Math Apps: Other iDevBooks math apps include Column Addition, Long Multiplication, Long Division, Column Subtraction, Visual Multiplication Table, Partial Differences Subtraction, Partial Quotients Division, Partial Sums Addition, Decimal Rounding, and more. Feedback: New ideas to make this app better are welcome. Please visit idevbooks.com to give feedback. Privacy: This app has no ads, no in-app purchases, and does not transmit user data during operation. The app also does not contain links to other apps or to the web.
Rectangles & Primes
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Rectangle provides a fun and insightful maths experience for kids aged 6 to 12. They will improve their understanding of number factorization and prime numbers.
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Verdict
The clearest difference is price: Rectangles & Primes at Free against Partial Product Multiplication's $3.99. Rectangles & Primes also leads on update cadence (every 3 weeks vs every 8 months) and iOS requirement (15.0 vs 17.6). On 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
Rectangles & Primes is free to download; Partial Product Multiplication costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Partial Product Multiplication ships an update every 8 months, Rectangles & Primes every 3 weeks. The most recent releases landed on September 21, 2026 and September 15, 2026 respectively.
| Parameter | Partial Product Multiplication | Rectangles & Primes |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 2.5 (2 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 8 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Esa Helttula | Johannes Charra |
In-app purchases
Partial Product Multiplication
No in-app purchases
Rectangles & Primes
No in-app purchases
Questions
Is Partial Product Multiplication free?
Is Rectangles & Primes free?
Do Partial Product Multiplication or Rectangles & Primes have ads?
Which is updated more often, Partial Product Multiplication or Rectangles & Primes?
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