Gridlock vs Number Sums
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Gridlock
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.
- Math skill improvement
- Equation-based puzzles
- Code cracking mechanics
- Daily challenges
- Number elimination
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Gridlock: Crack The Code is a simplistic puzzle game that can help in improving your math skills. You're given a set of equations which can help you to eliminate impossible numbers and eventually crack the code. By doing this daily, your math skills will improve!
Number Sums
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.
- 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
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Number Sums is a challenging number puzzle to train your mental math. The goal is to make the sum of numbers in each row, column, and colored region be equal to the clues on the side of the board and inside the colored regions. Practice your math skills and logic with Number Sums! Each row, column, and region has its own solution, but the goal of this math game with numbers is to make them all work at the same time. You have to circle the correct numbers and erase the numbers you don't need. Remember, the sums of the numbers in rows, columns and colored regions should be equal to the numbers on the sides of the board and inside each region. Each level of this numbers game has only one solution, try to find it to solve educational math puzzles! Mental arithmetic is an invaluable math skill for your everyday life. Inside Number Sums you'll find math puzzles of various difficulty. The mechanics of these math riddles sounds simple but requires a lot of thinking. Playing sum number games and solving math problems can improve your arithmetic skills. If you are interested in number puzzles or math games for adults, and in training your addition skills, play this engaging number game for hours of fun! How to play Number Sums: - Circle the correct numbers that add up to the values on the sides of the rows, columns and regions. - Use the toggle to switch between circling and erasing modes. It will help you to mark the correct numbers and the extra numbers that you don't need. - Each level of these math puzzles has only one possible solution, so make sure that the rows, columns and colored regions work together at the same time. - Train your math skills with this free number puzzle with various levels of difficulty. Open different types of board from 3x3 to 10x10. Tips to hone your skills: - Erase numbers on the board that are greater than the totals in the boxes. - If there is only one odd number in a column or row, and an even number is the sum in the box outside the board, then remove it. - If the largest number on the board isn't the same as the total outside the board, then add the smallest number from the board to it. If the sum is greater than the value in the box, then erase the largest number. What you get by playing the Number Sums game: - Tons of number puzzle games to challenge your brain. - Enjoy your game experience with the minimalistic and simple design. - Useful hints to help you when you’re stuck. - Mind puzzles with no time limits. Take your time to find the one and only solution to these number games. If you enjoy number games, take a break with Number Sums puzzles. Challenge your logic and play Number Sums anywhere, anytime!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Gridlock | Number Sums |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | 4.6 (31K ratings) |
| Positive reviews | 100.0% of reviews — better | 25.6% of reviews |
| Number of ratings | 4 | 31K — better |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 3 MB | 227 MB |
| Age rating | 4+ | 12+ |
| Developer | Bart Kneepkens | Easybrain Ltd |
Customer experience
Gridlock
Number Sums
Bugs and requests
Gridlock
Not enough reviews yet to summarise bugs or requests.
Number Sums
Reported bugs
2 issues- Incorrect number removal function removed
- Ads randomly opening browser pages
Requested features
4 requests- Dark mode option
- Separate buttons for circle/erase
- Auto-erase incorrect numbers
- Difficulty/grid size selection
In-app purchases
Gridlock
No in-app purchases
Number Sums
- Number Sums No Ads$14.99









