Comparison

Number Builder vs TT Math 4

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

TT Math 4

This educational app provides interactive math lessons and practice problems for 4th graders. It offers automated grading, step-by-step explanations, and parental controls for progress tracking. The app allows for offline use of up to six lessons, making it ideal for on-the-go learning.

Highlights
  • 119 audiovisual lectures
  • Thousands of practice problems
  • Automated grading
  • Step-by-step audiovisual explanations
  • Parental progress tracking
  • Offline lesson access (up to 6)
Read full description

The Teaching Textbooks Math 4 app makes your TT course even better! Not only will your student enjoy math while learning independently, but, with the app, that learning can also take place on the go. Even when offline! Specifically, the app can be used offline for up to 6 lessons at a time. That makes it perfect for homeschool parents who need their kids to stay productive while the family is out and about during the day. The app’s other features include… • 119 audiovisual lectures that teach every core concept in the standard 4th grade curriculum • thousands of problems that give students all the practice they need to master each concept • automated grading and instant feedback for every single problem • step-by-step audiovisual explanations to every single problem so students can see exactly what they did wrong when mistakes are made (This makes the program feel as if a tutor is at the student’s side!) • parental controls that let you track your student’s progress • the digitized version of the printed Teaching Textbooks Math 4 textbook (with a search feature and a hyper-linked index) • no advertising or in-app purchase offers • Internet connectivity is required, but you can remain offline for up to 6 lessons.

Screenshots

Number Builder4 screens
TT Math 44 screens

Verdict

The call

The clearest difference is review sentiment: Number Builder at 100% against TT Math 4's 37%. Number Builder also leads on rating (4.9 vs 3.5). TT Math 4's advantage is in-app purchases (none vs 1) and update cadence (every 2 months vs every 39 months). On price, ads and monetization model 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

Both are free to download. Number Builder sells 1 one-off in-app purchase. TT Math 4 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Number Builder holds the better App Store score, 4.9 against 3.5. That said, the two scores are not equally well evidenced: TT Math 4 has 83 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 100% of Number Builder's written reviews are positive against 37% of TT Math 4's.

UpkeepUpdate frequency

Number Builder ships an update every 39 months, TT Math 4 every 2 months. The most recent releases landed on August 12, 2026 and August 30, 2026 respectively.

Scorecard7 real differences · 3 level
Number Builder versus TT Math 4: the parameters behind the verdict, then further details
ParameterNumber BuilderTT Math 4
PriceFreeFree
Rating4.9 (7 ratings) — better3.5 (83 ratings)
Positive reviews100.0% of reviews — better37.3% of reviews
Number of ratings783 — better
Update frequencyEvery 39 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS17.012.0 — better
Further details — not scored
Size4 MB110 MB
Age rating4+4+
DeveloperWidgetilities LLCTeaching Textbooks, Inc.

Customer experience

Number Builder

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

TT Math 4

All ratings83 ratings
Positive61.4%
Neutral6.0%
Negative32.5%
Written reviews51 reviews
Positive37.3%
Neutral5.9%
Negative56.9%

In-app purchases

1 purchases

Number Builder

One-time1
  • Unlock Challenge Mode$1.99
None

TT Math 4

No in-app purchases

Questions

Is Number Builder free?
Number Builder is free to download, with in-app purchases available.
Is TT Math 4 free?
TT Math 4 is free to download, with no in-app purchases.
Which has better reviews, Number Builder or TT Math 4?
Number Builder is rated higher. Number Builder averages 4.9 out of 5 from 7 ratings, while TT Math 4 averages 3.5 from 83 ratings.
Do Number Builder or TT Math 4 have ads?
Neither Number Builder nor TT Math 4 shows ads.
Which is updated more often, Number Builder or TT Math 4?
Number Builder ships an update every 39 months, and TT Math 4 every 2 months. Most recently, Number Builder was updated on August 12, 2026 and TT Math 4 on August 30, 2026.

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