Comparison

iSameGame vs Concentration

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

Head to head
About

iSameGame

This is a 3D puzzle game where players tap groups of same-colored spheres to clear them. Every board is solvable, offering a challenge with different sizes and daily puzzles. Features include unlimited undos, hints, and replays.

Highlights
  • 3D sphere clearing gameplay
  • Shareable puzzle codes
  • Daily challenges and leaderboards
  • Multiple board sizes
  • Unlimited undo/redo
  • Replay functionality
Features
Read full description

iSameGame is SameGame in 3D. Tap a group of two or more touching spheres of one colour to select it, tap again to clear it. The spheres above fall, empty columns close up, and a group of n scores n(n−1)×10, so ten at once is worth 900 and twenty is worth 3,800. Every board the app deals can be cleared, and clearing it earns a 2,000 bonus. EVERY BOARD IS A CODE C-7K3P9Q deals the same board on every iPhone and iPad, and at samegame.app, so send it to a friend and compare scores on exactly the same puzzle. Each day has four daily boards, one per size, with a Game Center leaderboard for each, all-time leaderboards per size, ten achievements, and on iOS 26 challenges on today's board. FOUR SIZES Easy (8×10, three colours), Classic (8×12, five colours, the board from 2008), Large (10×16) and Expert (12×18). MADE TO BE PLAYED Unlimited undo and redo. A hint when you want one. Every finished game is kept with a replay you can watch move by move, and your bests follow you from iPhone to iPad through iCloud. Press New until a board leans your way, then step back to the one you skipped. Drag to tilt the board, pinch to zoom. Sound and haptics you can turn off. YOUR LOOK Matte, glossy or flat spheres. A high-contrast palette, and symbols on the spheres, for colour-blind players. The selection as an outline, a wire grid or a glow. iSameGame first shipped on the App Store in 2008. Version 6 is a new app on the same idea: the scoring is the one it always had, the boards are still guaranteed clearable, and the spheres are now real ones, lit, that you can tilt. Free, no account, no ads.

About

Concentration

A classic memory matching card game where players flip cards to find pairs. It's suitable for all ages, offering a fun challenge for both children and adults to test their recall.

Highlights
  • Card matching gameplay
  • Memory testing
  • Solitaire or multiplayer
  • Challenging for adults
  • Good for children
Features
Read full description

Concentration, also known as Match Match, Match Up, Pelmanism, Shinkei-suijaku, Pexeso or simply Pairs, is a card game in which all of the cards are laid face down on a surface and two cards are flipped face up over each turn. The object of the game is to turn over pairs of matching cards. Concentration can be played with any number of players or as solitaire. It is a particularly good game for young children, though adults may find it challenging and stimulating as well. Over the course of the game, it becomes known where certain cards are located, and so upon turning up one card, players with good memory will be able to remember where they have already seen its pair. It is common for many players to think they know where pairs are and to turn over the one they are sure of first, then be stumped finding its mate. A better strategy is to turn over a less certain card first, so that if wrong, one knows not to bother turning a more certain card over.

Screenshots

iSameGame4 screens
Concentration3 screens

Verdict

The call

The clearest difference is price: iSameGame at Free against Concentration's $0.99. iSameGame also leads on ratings volume (7 vs 1). Concentration's advantage is rating (4.0 vs 3.6) and update cadence (every 8 days vs every 9 months). On ads, in-app purchases, monetization model 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

iSameGame is free to download; Concentration costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Concentration holds the better App Store score, 4.0 against 3.6. That said, the two scores are not equally well evidenced: iSameGame has 7 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

iSameGame ships an update every 9 months, Concentration every 8 days. The most recent releases landed on October 23, 2026 and October 16, 2026 respectively.

Scorecard5 real differences · 5 level
iSameGame versus Concentration: the parameters behind the verdict, then further details
ParameteriSameGameConcentration
PriceFree — better$0.99
Rating3.6 (7 ratings)4.0 (1 ratings) — better
Positive reviews67.9% of reviews—
Number of ratings7 — better1
Update frequencyEvery 9 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPod
Requires iOS26.013.0 — better
Further details — not scored
Size4 MB2 MB
Age rating4+4+
DeveloperObjectGraph LLCAnkit Shah

Customer experience

iSameGame

All ratings6 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews28 reviews
Positive67.9%
Neutral21.4%
Negative10.7%

Concentration

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

iSameGame

No in-app purchases

None

Concentration

No in-app purchases

Questions

Is iSameGame free?
iSameGame is free to download, with no in-app purchases.
Is Concentration free?
Concentration costs $0.99, with no in-app purchases.
Which has better reviews, iSameGame or Concentration?
Concentration is rated higher. iSameGame averages 3.6 out of 5 from 7 ratings, while Concentration averages 4.0 from 1 ratings.
Do iSameGame or Concentration have ads?
Neither iSameGame nor Concentration shows ads.
Which is updated more often, iSameGame or Concentration?
iSameGame ships an update every 9 months, and Concentration every 8 days. Most recently, iSameGame was updated on October 23, 2026 and Concentration on October 16, 2026.

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