# Gridlock vs Number Sums

The clearest difference is review sentiment: Gridlock at 100% against Number Sums's 26%. Gridlock also leads on in-app purchases (none vs 1) and ads (none vs shown). Number Sums's advantage is ratings volume (31K vs 4). On price and device support there is nothing between them.

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

Gridlock 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 4, so its average is the more settled of the two. Written reviews point the same way: 100% of Gridlock's written reviews are positive against 26% of Number Sums's.

Gridlock ships an update fortnightly, Number Sums every 2 months. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Gridlock | Number Sums |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/gridlock-crack-the-code/id1521715985/reviews)** | [4.6 (31K ratings)](https://appshunter.io/ios/app/number-sums-numbers-game/id6449427809/reviews) |
| Number of ratings | 4 | **31K** |
| Positive reviews | **100.0% of reviews** | 25.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 227 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Bart Kneepkens](https://appshunter.io/developer/1521716288) | [Easybrain Ltd](https://appshunter.io/developer/1190815537) |

## What reviewers say

### Gridlock

[App page](https://appshunter.io/ios/app/gridlock-crack-the-code/id1521715985)

A simple puzzle game designed to enhance your mathematical abilities. Solve equations to eliminate numbers and crack the code. Regular play can significantly boost your math skills.

**Highlights:** Math skill improvement, Equation-based puzzles, Code cracking mechanics, Daily challenges, Number elimination

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Gridlock free?

Gridlock is free to download, with no in-app purchases.

### Is Number Sums free?

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

### Which has better reviews, Gridlock or Number Sums?

Gridlock is rated higher. Gridlock averages 5.0 out of 5 from 4 ratings, while Number Sums averages 4.6 from 31K ratings.

### Do Gridlock or Number Sums have ads?

Number Sums shows ads; Gridlock does not.

### Which is updated more often, Gridlock or Number Sums?

Gridlock ships an update fortnightly, and Number Sums every 2 months. Most recently, Gridlock was updated on October 24, 2026 and Number Sums on October 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.*