# Number Builder vs TT Math 4

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.

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

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.

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.

## The numbers

| Metric | Number Builder | TT Math 4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (7 ratings)](https://appshunter.io/ios/app/number-builder-puzzle-solver/id1489526164/reviews)** | [3.5 (83 ratings)](https://appshunter.io/ios/app/tt-math-4/id1516356640/reviews) |
| Number of ratings | 7 | **83** |
| Positive reviews | **100.0% of reviews** | 37.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 4 MB | 110 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Widgetilities LLC](https://appshunter.io/developer/1373578566) | [Teaching Textbooks, Inc.](https://appshunter.io/developer/1516345361) |

## What reviewers say

### Number Builder

[App page](https://appshunter.io/ios/app/number-builder-puzzle-solver/id1489526164)

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:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Challenge Mode | $1.99 | one-time |


### TT Math 4

[App page](https://appshunter.io/ios/app/tt-math-4/id1516356640)

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)

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*