Comparison

Summation vs GridMind Pro

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

Head to head
About

Summation

Engage your brain with a minimalistic math puzzle game. Rearrange numbers to solve increasingly challenging levels. Explore new themes and enjoy endless gameplay.

Highlights
  • Minimalistic math puzzle gameplay
  • Rearrange numbers to solve puzzles
  • Endless levels for infinite play
  • Unlockable game themes
  • Brain workout challenges
Features
Read full description

Summation is a minimalistic math game that will give your brain a workout. The objective of the game is to solve the puzzle by rearranging the numbers given to you. Sound easy? But can you get to level 100? Features: - Endless Level. You can play forever. - Unlock new game themes. - New game modes coming. Get in touch: game@lemon-jam.com Twitter:twitter.com/lemonjamstudio Facebook:facebook.com/lemonjamstudio

About

GridMind Pro

Features
Read full description

GridMind Pro – Math Puzzle Challenge your mind with GridMind Pro, the ultimate math puzzle experience. Fill the grid using arithmetic and logic — no guessing, no luck. Pure brain training. How to Play Place numbers in empty cells so that each row and column contains every number exactly once — just like Sudoku. The twist: cells are grouped into "cages," each with a target number and an arithmetic operation (+, −, ×, ÷). The numbers in each cage must produce the target value using the given operation. Simple rules, deep strategy. Three Difficulty Levels • Easy: Smaller 4×4 grids, perfect for getting started. • Medium: 6×6 grids — a satisfying challenge for regular players. • Hard: Large 9×9 grids with complex cage structures for true puzzle masters. Helpful Tools • Pencil Mode: Jot down candidate numbers in any cell and narrow down possibilities. • Hints: Stuck? Reveal the correct number for a selected cell. • Undo: Take back your last move without losing progress. • Error Check: Highlight mistakes and get back on track. Track Your Progress • View your solve count, best times, and average times for each difficulty level. • See your overall completion percentage across all puzzles. Sleek Design Full light and dark mode support with a clean, distraction-free grid layout designed for comfortable long play sessions. 2 Languages Supported English and Turkish. Completely Offline No internet connection needed. Play anytime, anywhere. Privacy Policy: https://www.urhoba.com/pages/privacy-policy-for-gridmind-pro Terms of Use: https://www.urhoba.com/pages/terms-of-use-for-gridmind-pro

Screenshots

Summation4 screens
GridMind Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: GridMind Pro at none against Summation's 2. Summation's advantage is ads (none vs shown) and device support (3 vs 1). On price and update cadence 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. Summation sells 2 one-off in-app purchases. GridMind Pro asks for nothing beyond the download.

UpkeepUpdate frequency

Summation ships an update every 3 weeks, GridMind Pro fortnightly. The most recent releases landed on September 28, 2026 and September 15, 2026 respectively.

Scorecard4 real differences · 6 level
Summation versus GridMind Pro: the parameters behind the verdict, then further details
ParameterSummationGridMind Pro
PriceFreeFree
Rating4.2 (58 ratings) — better—
Positive reviews70.0% of reviews—
Number of ratings58 — better—
Update frequencyEvery 3 weeksFortnightly — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS9.0 — better16.4
Further details — not scored
Size110 MB48 MB
Age rating4+4+
DeveloperLemon Jam Technology Co., Ltd.Ahmet Bohur

Bugs and requests

Summation

Reported bugs

12 issues
  • Hint button freezes game and requires reinstall to fix
  • Game crashes at specific levels (e.g., level 102)
  • App crashes immediately upon opening with blue dot indicator
  • Full-screen ads cannot be closed and trap users
  • Game gets stuck in landscape mode after full-page ad
Show 7 more
  • Ads prevent progression in Challenge Mode
  • App Store opens involuntarily multiple times in succession
  • Mute setting resets every time app is opened
  • Display not properly fitted for iPhone X
  • Unsolvable levels in Challenge Mode after paying for ad removal
  • Game Center leaderboards not accessible except after beating levels
  • Next level button obscured by puzzle elements

Requested features

10 requests
  • Dark mode for nighttime playing
  • Multiplication puzzle variant
  • Increased difficulty progression beyond level 100
  • More varied puzzle structures and mechanics
  • Ability to purchase larger quantities of hints at once
Show 5 more
  • Proper Game Center integration with friend additions
  • Information about total number of levels available
  • Night mode for bedtime gameplay
  • Persistent mute setting across sessions
  • Better level syncing across devices

GridMind Pro

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Summation

One-time2
  • Buy Hints$0.99
  • Remove Ads$1.99
None

GridMind Pro

No in-app purchases

Questions

Is Summation free?
Summation is free to download, with in-app purchases available.
Is GridMind Pro free?
GridMind Pro is free to download, with no in-app purchases.
Do Summation or GridMind Pro have ads?
GridMind Pro shows ads; Summation does not.
Which is updated more often, Summation or GridMind Pro?
Summation ships an update every 3 weeks, and GridMind Pro fortnightly. Most recently, Summation was updated on September 28, 2026 and GridMind Pro on September 15, 2026.

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