ProblemSum

ProblemSum

Word problems, Singapore-style

1 ratings
1 review
$6.99

Details

Released
August 22, 2017
Updated
October 25, 2026

Features

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ProblemSum screenshot #9 for iPhone
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About

Practice math word problems aligned with the Singapore Mathematics syllabus for Primary 6 students. Get detailed solutions for each problem. The app works offline and requires no account.

✓Random math word problem generation
✓Singapore Math syllabus alignment
✓Detailed step-by-step solutions
✓Offline functionality
✓No account required
✓Ad-free experience
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What's New in ProblemSum

3.4.0

October 25, 2026

Somewhere to work each problem out, and Recents that keeps what you did. A SCRATCH PAD Draw the model with a finger or Apple Pencil, or type the math. On iPad and Mac, and on an iPhone turned sideways, the pad sits next to the question; held upright, it slides up from below. After Check, switch between the solution and your own work to compare them. The pad never calculates: the first paper of Singapore's exam allows no calculator. RECENTS KEEPS YOUR WORK Each recent question now shows what you answered, marked right or wrong, and your work, above its solution. On iPad and Mac the list and the question sit side by side. READY FOR IPHONE DUO Folded, ProblemSum works as it does on any iPhone; opened, the question and your work sit side by side. Fold or open it mid-question and nothing is lost. IPHONE SIDEWAYS iPhone now turns to landscape, where the question and your work sit side by side too. ANSWERS WITH THEIR UNITS An answer typed with its unit, such as 120 cm³, 45 min or 12 years, is no longer marked wrong. SOLUTIONS NAME THE IDEA Before-and-after solutions now name the idea behind them, as Singapore's textbooks do: constant difference, constant total, units and parts. AND FIXES On the Mac, the answer box shows again. Long lines of text on iPad and Mac are kept to a comfortable width. The Info tab's topics follow Singapore's syllabus headings, and its address for reporting a mistake is now hello@problemsum.com.

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User reviews

THIS APP IS NOT FOR KIDS ITS FOR ADULTS WAY TI HARD.

I rate it good but I’m not a adult
I thought this was a kid game
But it wasn’t this is like a Albert Einstein test. The apps are so hard that my mind exploded.

Developer apps

FAQ

What math topics does ProblemSum cover?

ProblemSum generates word problems based on the Singapore Mathematics syllabus for Primary 6, which typically includes topics like whole numbers, fractions, decimals, percentages, and geometry.

How does ProblemSum help with PSLE preparation?

The app provides practice with a virtually unlimited number of questions specifically designed to align with the PSLE exam's math word problem format and difficulty.

Can I use ProblemSum without an internet connection?

Yes, ProblemSum works entirely offline. No internet connection is required to generate problems or view solutions, making it convenient for studying anywhere.

Does ProblemSum have ads?

No, ProblemSum is ad-free. The app is designed for uninterrupted practice, allowing students to focus on solving problems without any advertisements.

How often is ProblemSum updated?

The app was last updated on November 1, 2024, with version 2.3. Users are encouraged to enable auto-updates to receive new question types and features as they are added.

What devices can I use ProblemSum on?

ProblemSum is available on Mac, iPhone, iPad, and iPod devices, offering flexibility for students to practice on their preferred Apple hardware.

What is the age rating for ProblemSum?

ProblemSum has an age rating of 4+, indicating it is suitable for young learners and above, focusing on foundational math skills.

How much does ProblemSum cost?

ProblemSum is available for a one-time purchase price of $1.99, providing access to unlimited practice questions without ongoing fees.