Comparison

Gridlock vs Number Sums

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Math skill improvement
  • Equation-based puzzles
  • Code cracking mechanics
  • Daily challenges
  • Number elimination
Features
Read full description

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!

About

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.

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
Read full description

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

Gridlock4 screens
Number Sums4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard8 real differences · 2 level
Gridlock versus Number Sums: the parameters behind the verdict, then further details
ParameterGridlockNumber Sums
PriceFreeFree
Rating5.0 (4 ratings) — better4.6 (31K ratings)
Positive reviews100.0% of reviews — better25.6% of reviews
Number of ratings431K — better
Update frequencyFortnightly — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size3 MB227 MB
Age rating4+12+
DeveloperBart KneepkensEasybrain Ltd

Customer experience

Gridlock

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Number Sums

All ratings31,317 ratings
Positive90.8%
Neutral4.7%
Negative4.5%
Written reviews1,365 reviews
Positive25.6%
Neutral21.3%
Negative53.0%

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

None

Gridlock

No in-app purchases

1 purchases

Number Sums

One-time1
  • Number Sums No Ads$14.99

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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