The Memory Matrix vs Sum
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
The Memory Matrix
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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
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.
- 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
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | The Memory Matrix | Sum |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (6 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 6 — better |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 83 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | 玥 高 | Allen Kagle |
In-app purchases
The Memory Matrix
No in-app purchases
Sum
No in-app purchases
Questions
Is The Memory Matrix free?
Is Sum free?
Do The Memory Matrix or Sum have ads?
Which is updated more often, The Memory Matrix or Sum?
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