Comparison

Choco abacus 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

Choco abacus

Learn and master mental calculation with an engaging abacus game. Features a friendly tutorial and a simple, fun game system that allows you to unlock new stages as you play.

Highlights
  • Easy to learn abacus mechanics
  • Friendly tutorial for beginners
  • Simple and fun game system
  • Unlock new stages through gameplay
  • Mental calculation practice
Features
Read full description

Play the best Abacus game in the world! * Easy to learn Abacus * Friendly tutorial * Simple and fun game system * Play and get more stages

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
Currently charting
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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

Choco abacus4 screens
Number Sums4 screens

Verdict

The call

The clearest difference is review sentiment: Choco abacus at 88% against Number Sums's 25%. Choco abacus also leads on in-app purchases (none vs 1) and iOS requirement (9.0 vs 15.0). Number Sums's advantage is rating (4.6 vs 3.2) and ratings volume (31K vs 5). On price, update cadence, ads 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. Choco abacus asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Number Sums holds the better App Store score, 4.6 against 3.2. That said, the two scores are not equally well evidenced: Number Sums has 31K ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 88% of Choco abacus's written reviews are positive against 25% of Number Sums's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Choco abacus ships an update monthly, Number Sums every 2 months. The most recent releases landed on November 2, 2026 and November 11, 2026 respectively.

Scorecard7 real differences · 4 level
Choco abacus versus Number Sums: the parameters behind the verdict, then further details
ParameterChoco abacusNumber Sums
PriceFreeFree
Rating3.2 (5 ratings)4.6 (31K ratings) — better
Positive reviews87.5% of reviews — better25.4% of reviews
Number of ratings531K — better
Update frequencyMonthly — betterEvery 2 months
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
Best chart rank—#210 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better15.0
Further details — not scored
Size107 MB227 MB
Age rating4+12+
DeveloperPark JisangEasybrain Ltd

Customer experience

Choco abacus

All ratings5 ratings
Positive60.0%
Neutral0.0%
Negative40.0%
Written reviews32 reviews
Positive87.5%
Neutral6.3%
Negative6.3%

Number Sums

All ratings31,317 ratings
Positive90.8%
Neutral4.7%
Negative4.5%
Written reviews1,377 reviews
Positive25.4%
Neutral21.3%
Negative53.3%

Bugs and requests

Choco abacus

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

Choco abacus

No in-app purchases

1 purchases

Number Sums

One-time1
  • Number Sums No Ads$14.99

Questions

Is Choco abacus free?
Choco abacus 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, Choco abacus or Number Sums?
Number Sums is rated higher. Choco abacus averages 3.2 out of 5 from 5 ratings, while Number Sums averages 4.6 from 31K ratings.
Do Choco abacus or Number Sums have ads?
Both Choco abacus and Number Sums show ads.
Which is updated more often, Choco abacus or Number Sums?
Choco abacus ships an update monthly, and Number Sums every 2 months. Most recently, Choco abacus was updated on November 2, 2026 and Number Sums on November 11, 2026.

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