Comparison

Number Builder vs JAM Legio

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

JAM Legio

Embark on a historical adventure learning classical Latin. This app guides you from Rome to Gaul, teaching vocabulary, verb endings, and sentence structure through interactive challenges and a journey-based curriculum. Designed for homeschool and classical education students, it offers a fun and engaging way to master first-year Latin.

Highlights
  • Roman legion journey from Rome to Gaul
  • Henle and Vulgate vocabulary integration
  • Interactive learning activities (matching, challenges)
  • Progress tracking and global leaderboard
  • Focus on noun declensions, verb endings, and sentences
  • Ad-free and no in-app purchases
Features
Currently charting
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Our new app is here and combines Henle vocabulary with Vulgate vocabulary. It is all created by the JAM with Latin team, Anastasia as artist, Thomas as app designer and Abigail and Alexis as curriculum builders. We have included history, review and a journey into Gaul: Currently a one time fee of $19.99 plus unlimited log ins for a limited time. Jam with Latin turns first-year classical Latin into an adventure. Your student joins a Roman legion and marches from Rome toward Gaul, learning real vocabulary, verb endings, and short sentences at every stop. Built for homeschool and classical-education students — approachable for younger learners, faithful to the grammar teachers actually teach. NO AI was used for images or content - 100% made by hand by the Jam with Latin team! THE JOURNEY Follow thirteen stops on the march north, from Rōma through Italy to Gallia. Each city teaches one piece of the classical curriculum: • 1st through 5th declension nouns — one focus per city • Present-tense verbs and the personal endings • Adjectives, joiners (prepositions, conjunctions, adverbs), and short Latin sentences • Camp stops to train and practice verb endings HOW YOU LEARN • Vocabulary cards — match Latin to English • Case challenges — pick the correct form of a noun • Verb-ending matching — connect each ending to its person and number • Sentence reading — put grammar together into short Latin sentences • Training Camp — practice words and endings any time BUILT FOR CLASSICAL STUDENTS • Follows the classical order: declensions → verbs → sentences • Fits Henle, Classical Conversations, and similar first-year Latin • Correct macrons and forms throughout • Earn XP, climb the ranks, and see a friendly global leaderboard SAFE AND SIMPLE • Sign in with a username and 6-digit PIN — no email required • No ads. No in-app purchases. No tracking for ads • Delete your account and progress any time from the app • Progress saves to your account across devices Made with the team behind jamwithlatin.com for joyful, classical Latin learning. Salvē — your march begins in Rōma.

Screenshots

Number Builder4 screens
JAM Legio4 screens

Verdict

The call

The clearest difference is price: Number Builder at Free against JAM Legio's $19.99. Number Builder also leads on ratings volume (7 vs 1). JAM Legio's advantage is in-app purchases (none vs 1) and update cadence (weekly vs every 39 months). On rating, ads, device support and iOS requirement 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; JAM Legio costs $19.99 up front. Number Builder sells 1 one-off in-app purchase. JAM Legio asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Number Builder against 5.0 for JAM Legio. That said, the two scores are not equally well evidenced: Number Builder has 7 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Number Builder ships an update every 39 months, JAM Legio weekly. The most recent releases landed on October 10, 2026 and October 3, 2026 respectively.

Scorecard6 real differences · 5 level
Number Builder versus JAM Legio: the parameters behind the verdict, then further details
ParameterNumber BuilderJAM Legio
PriceFree — better$19.99
Rating4.9 (7 ratings)5.0 (1 ratings) — better
Positive reviews80.0% of reviews—
Number of ratings7 — better1
Update frequencyEvery 39 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree — betterPaid
Best chart rank—#200 — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.4 — better
Further details — not scored
Size4 MB64 MB
Age rating4+4+
DeveloperWidgetilities LLCJam with Latin

Customer experience

Number Builder

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

JAM Legio

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Number Builder

One-time1
  • Unlock Challenge Mode$1.99
None

JAM Legio

No in-app purchases

Questions

Is Number Builder free?
Number Builder is free to download, with in-app purchases available.
Is JAM Legio free?
JAM Legio costs $19.99, with no in-app purchases.
Which has better reviews, Number Builder or JAM Legio?
JAM Legio is rated higher. Number Builder averages 4.9 out of 5 from 7 ratings, while JAM Legio averages 5.0 from 1 ratings.
Do Number Builder or JAM Legio have ads?
Neither Number Builder nor JAM Legio shows ads.
Which is updated more often, Number Builder or JAM Legio?
Number Builder ships an update every 39 months, and JAM Legio weekly. Most recently, Number Builder was updated on October 10, 2026 and JAM Legio on October 3, 2026.

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