# Math Plus Challenge Test Skill vs Sum

The clearest difference is rating: Sum at 5.0 against Math Plus Challenge Test Skill's 3.0. Sum also leads on update cadence (every 3 days vs every 19 months). Math Plus Challenge Test Skill's advantage is ads (none vs shown) and iOS requirement (11.0 vs 17.6). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. Math Plus Challenge Test Skill sells 8 one-off in-app purchases and Sum sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Sum holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Math Plus Challenge Test Skill ships an update every 19 months, Sum every 3 days. The most recent releases landed on October 3, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Math Plus Challenge Test Skill | Sum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/math-plus-challenge-test-skill/id1465689873/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sum-math-puzzle-brain-game/id6450458099/reviews)** |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 19 months | **Every 3 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 57 MB | 20 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Phoenix Mind Games](https://appshunter.io/developer/1396381573) | [Whimseed Studio Private Limited](https://appshunter.io/developer/1668117901) |

## What reviewers say

### Math Plus Challenge Test Skill

[App page](https://appshunter.io/ios/app/math-plus-challenge-test-skill/id1465689873)

Enhance your mathematical abilities with this engaging game. It offers challenging puzzles and allows you to track your progress against global scores. Suitable for all ages, it aims to improve brain power and math skills.

**Highlights:** Endless puzzle collection, Universal design for iPhone and iPad, Offline play available, Math learning tool, Reach high scores, Fast math drills

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pile Of Coins | $0.99 | one-time |
| Activate Adblock | $1.99 | one-time |
| Bulk Of Coins | $1.99 | one-time |
| Heap Of Coins | $2.99 | one-time |
| Batch Of Coins | $3.99 | one-time |
| Lot Of Coins | $4.99 | one-time |
| Mass Of Coins | $5.99 | one-time |
| Peak Of Coins | $6.99 | one-time |


### Sum

[App page](https://appshunter.io/ios/app/sum-math-puzzle-brain-game/id6450458099)

This game challenges you to find sums from a grid of numbers before time runs out. It offers multiple modes, from fast-paced challenges to relaxed untimed play, and helps improve mental agility and logic skills.

**Highlights:** Timed addition challenges, Four distinct game modes, Offline play supported, Compete with friends, Detailed progress statistics, Sleek user interface

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |


## Frequently asked questions

### Is Math Plus Challenge Test Skill free?

Math Plus Challenge Test Skill is free to download, with in-app purchases available.

### Is Sum free?

Sum is free to download, with in-app purchases available.

### Which has better reviews, Math Plus Challenge Test Skill or Sum?

Sum is rated higher. Math Plus Challenge Test Skill averages 3.0 out of 5 from 1 ratings, while Sum averages 5.0 from 1 ratings.

### Do Math Plus Challenge Test Skill or Sum have ads?

Sum shows ads; Math Plus Challenge Test Skill does not.

### Which is updated more often, Math Plus Challenge Test Skill or Sum?

Math Plus Challenge Test Skill ships an update every 19 months, and Sum every 3 days. Most recently, Math Plus Challenge Test Skill was updated on October 3, 2026 and Sum on September 28, 2026.

---

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