Comparison

The Memory Matrix vs Sum

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

Head to head
About

The Memory Matrix

Features
Read full description

The game story begins with two friends, Rina and Rai. Rina is kidnapped by a bad person. Now Rai takes the responsibility to save her friend. The player has to help Rai reach Rina by selecting the correct bridge block to cross the river. The bridge blocks will be shown for a few seconds, and you need to remember and select the same bridge that was shown previously. Be careful! If your memory is not strong or you can't find the correct bridge step, Rai will fall into the water, and the game will be over. Features of this game: High-quality graphics Minimal game size Super simple controls Interesting quests

About

Sum

A logic puzzle game where players fill in missing squares to match row and column totals. It offers various modes like Standard, Time Attack, and Grid Blitz, suitable for casual play or skill sharpening.

Highlights
  • Fill missing squares to match totals
  • Standard mode with adjustable difficulty
  • Time Attack mode against the clock
  • Grid Blitz mode for speed and accuracy
  • Sharpen quick addition skills
  • Suitable for all ages
Features
Read full description

In Sum-Squares, fill in the missing squares to match the totals at the end of each row and column! Jump into an assortment of unique modes: Standard - Pick a grid size and difficulty, then solve the missing squares as fast as you can! The better your logical deduction skills, the more points you'll earn. Time Attack - Race against the clock to see how many grids you can complete before time runs out! Grid Blitz - The grids are small in this mode, but your deduction skills will be put on full display in this test of speed and accuracy! This free-to-play, addictive puzzle game is sure to be fun for all ages. It can be enjoyed as a casual experience or to help sharpen your quick addition skills. Ready to test your logic? Download now and start solving!

Screenshots

The Memory Matrix3 screens
Sum4 screens

Verdict

The call

The clearest difference is update cadence: Sum at weekly against The Memory Matrix's every 3 weeks. The Memory Matrix's advantage is iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

The Memory Matrix ships an update every 3 weeks, Sum weekly. The most recent releases landed on October 25, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
The Memory Matrix versus Sum: the parameters behind the verdict, then further details
ParameterThe Memory MatrixSum
PriceFreeFree
Rating—5.0 (6 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—6 — better
Update frequencyEvery 3 weeksWeekly — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.1
Further details — not scored
Size83 MB28 MB
Age rating4+4+
Developer玥 高Allen Kagle

In-app purchases

None

The Memory Matrix

No in-app purchases

None

Sum

No in-app purchases

Questions

Is The Memory Matrix free?
The Memory Matrix is free to download, with no in-app purchases.
Is Sum free?
Sum is free to download, with no in-app purchases.
Do The Memory Matrix or Sum have ads?
Neither The Memory Matrix nor Sum shows ads.
Which is updated more often, The Memory Matrix or Sum?
The Memory Matrix ships an update every 3 weeks, and Sum weekly. Most recently, The Memory Matrix was updated on October 25, 2026 and Sum on November 5, 2026.

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