# Number Sums vs Knight's Graph

The clearest difference is review sentiment: Knight's Graph at 100% against Number Sums's 26%. Knight's Graph also leads on in-app purchases (none vs 1) and ads (none vs shown). Number Sums's advantage is ratings volume (31K vs 1). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Number Sums sells 1 one-off in-app purchase. Knight's Graph asks for nothing beyond the download.

Knight's Graph holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Number Sums has 31K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 26% of Number Sums's written reviews are positive against 100% of Knight's Graph's.

Number Sums ships an update every 2 months, Knight's Graph weekly. The most recent releases landed on October 28, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Number Sums | Knight's Graph |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (31K ratings)](https://appshunter.io/ios/app/number-sums-numbers-game/id6449427809/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/knights-graph/id6737812039/reviews)** |
| Number of ratings | **31K** | 1 |
| Positive reviews | 25.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 227 MB | 34 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Easybrain Ltd](https://appshunter.io/developer/1190815537) | [Gleb Shalimov](https://appshunter.io/developer/1775466597) |

## What reviewers say

### Number Sums

[App page](https://appshunter.io/ios/app/number-sums-numbers-game/id6449427809)

This app offers a challenging number puzzle designed to enhance mental math skills. Players must make the sum of numbers in rows, columns, and colored regions match given clues by circling correct numbers and erasing extras. It provides a fun way to practice arithmetic and logic with various difficulty levels.

**Highlights:** Summing numbers in rows and columns, Matching sums to clues, Circling and erasing numbers, Multiple difficulty levels, Board sizes from 3x3 to 10x10, Hint system

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Number Sums No Ads | $14.99 | one-time |

**What reviewers like**

- 🧠 Challenging brain exercise
- 🔢 Enjoyable number-based gameplay
- 👍 Well-designed interface
- 🕰️ No time pressure

**What reviewers complain about**

- 💢 Excessive mid-game ads
- 🤔 Toggle button issues
- 🔍 Small text/numbers
- 🔋 Game drains battery

**Reported bugs**

- Incorrect number removal function removed
- Ads randomly opening browser pages

**Requested features**

- Dark mode option
- Separate buttons for circle/erase
- Auto-erase incorrect numbers
- Difficulty/grid size selection


### Knight's Graph

[App page](https://appshunter.io/ios/app/knights-graph/id6737812039)

Challenge your logic and strategic thinking with this intellectual puzzle game. Navigate a chess knight across the board, visiting each square exactly once. Experience a new strategic challenge with every game.

**Highlights:** Knight's tour puzzle gameplay, Logical and strategic challenges, Unique challenges with each game, Test problem-solving skills, Classic chess knight movement

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Number Sums free?

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

### Is Knight's Graph free?

Knight's Graph is free to download, with no in-app purchases.

### Which has better reviews, Number Sums or Knight's Graph?

Knight's Graph is rated higher. Number Sums averages 4.6 out of 5 from 31K ratings, while Knight's Graph averages 5.0 from 1 ratings.

### Do Number Sums or Knight's Graph have ads?

Number Sums shows ads; Knight's Graph does not.

### Which is updated more often, Number Sums or Knight's Graph?

Number Sums ships an update every 2 months, and Knight's Graph weekly. Most recently, Number Sums was updated on October 28, 2026 and Knight's Graph on October 21, 2026.

---

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