Comparison

Partial Product Multiplication vs Rectangles & Primes

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

Rectangles & Primes

Features
Read full description

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.

Screenshots

Partial Product Multiplication4 screens
Rectangles & Primes2 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Partial Product Multiplication versus Rectangles & Primes: the parameters behind the verdict, then further details
ParameterPartial Product MultiplicationRectangles & Primes
Price$3.99Free — better
Rating2.5 (2 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings2 — better—
Update frequencyEvery 8 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.615.0 — better
Further details — not scored
Size1 MB10 MB
Age rating4+4+
DeveloperEsa HelttulaJohannes Charra

In-app purchases

None

Partial Product Multiplication

No in-app purchases

None

Rectangles & Primes

No in-app purchases

Questions

Is Partial Product Multiplication free?
Partial Product Multiplication costs $3.99, with no in-app purchases.
Is Rectangles & Primes free?
Rectangles & Primes is free to download, with no in-app purchases.
Do Partial Product Multiplication or Rectangles & Primes have ads?
Neither Partial Product Multiplication nor Rectangles & Primes shows ads.
Which is updated more often, Partial Product Multiplication or Rectangles & Primes?
Partial Product Multiplication ships an update every 8 months, and Rectangles & Primes every 3 weeks. Most recently, Partial Product Multiplication was updated on September 21, 2026 and Rectangles & Primes on September 15, 2026.

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