Comparison

Number Builder vs Multiplication Ring

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

Head to head
About

Number Builder

This app helps solve math puzzles by calculating all possible equations from dice rolls and a target number. It supports basic arithmetic, powers, and roots, making it a useful tool for games like Number Knockout.

Highlights
  • Calculates all possible solutions
  • Supports basic arithmetic
  • Includes powers and roots
  • Input dice rolls and target number
  • Useful for Number Knockout game
Features
Read full description

Number Builder turns dice rolls into a hands-on way to practice mental math. SOLVE MODE Roll three dice, enter a target number, and see every way to combine your dice — using addition, subtraction, multiplication, division, exponents, and roots — to reach it. Great for checking your own work or discovering paths you hadn't thought of. CHALLENGE MODE Roll a set of dice and a target, then build the answer yourself — tapping dice and operators into place, left to right, with instant feedback when you're right. Six levels of difficulty take you from simple addition all the way up to exponents, fractional exponents, and roots, with targets up to 1,000. Challenge mode includes 3 free puzzles to try. After that, it unlocks with a single one-time purchase — no subscriptions, and Family Sharing means one purchase covers your whole family. BUILT FOR PRACTICE Six progressively harder levels, each changing exactly one thing about the challenge Customizable dice colors and styles Full support for larger text sizes and VoiceOver Solve mode stays completely free, no purchase required No data is collected. No ads, ever.

About

Multiplication Ring

Features
Read full description

Introduction The object of this game is to find two green cards in the outer ring that can be multiplied together to equal a blue product card found in the center of the ring. How to Play Choose two green cards and one blue card to create a multiplication equation. When correct, the cards will be cleared and the written equation will appear. If no cards can be played, click the “Replace Corner Cards” and new cards will appear in the four corners. If help is needed, click the help button to see a multiplication table.

Screenshots

Number Builder4 screens
Multiplication Ring4 screens

Verdict

The call

The clearest difference is price: Number Builder at Free against Multiplication Ring's $1.99. Multiplication Ring's advantage is in-app purchases (none vs 1) and update cadence (every 10 months vs every 39 months). On ads 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

Number Builder is free to download; Multiplication Ring costs $1.99 up front. Number Builder sells 1 one-off in-app purchase. Multiplication Ring asks for nothing beyond the download.

UpkeepUpdate frequency

Number Builder ships an update every 39 months, Multiplication Ring every 10 months. The most recent releases landed on October 3, 2026 and September 26, 2026 respectively.

Scorecard4 real differences · 6 level
Number Builder versus Multiplication Ring: the parameters behind the verdict, then further details
ParameterNumber BuilderMultiplication Ring
PriceFree — better$1.99
Rating4.9 (7 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 39 monthsEvery 10 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.013.0 — better
Further details — not scored
Size4 MB69 MB
Age rating4+4+
DeveloperWidgetilities LLCActivities for Learning inc.

In-app purchases

1 purchases

Number Builder

One-time1
  • Unlock Challenge Mode$1.99
None

Multiplication Ring

No in-app purchases

Questions

Is Number Builder free?
Number Builder is free to download, with in-app purchases available.
Is Multiplication Ring free?
Multiplication Ring costs $1.99, with no in-app purchases.
Do Number Builder or Multiplication Ring have ads?
Neither Number Builder nor Multiplication Ring shows ads.
Which is updated more often, Number Builder or Multiplication Ring?
Number Builder ships an update every 39 months, and Multiplication Ring every 10 months. Most recently, Number Builder was updated on October 3, 2026 and Multiplication Ring on September 26, 2026.

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