Comparison

hidden shapes vs Saving Memo

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

Head to head
About

hidden shapes

This puzzle game challenges your spatial reasoning by requiring you to find a target shape hidden within larger geometric figures. It offers a relaxing, no-pressure experience with a minimalist design and handcrafted levels to sharpen your mind.

Highlights
  • Spatial ability training
  • Minimalist design
  • 75 handcrafted levels
  • Relaxing music and sounds
  • No time or move limits
  • Sharpens the mind
Features
Read full description

*** hidden shapes puzzle game is inspired by Embedded Figures Test which was designed by Herman A. Witkin who known as a pioneer of the theory of cognitive styles.***  The Minnesota Paper Form Board Test(Likert) type questions are also added in the game. hidden shapes is a spatial ability puzzle game. There is no time limit, move limit and points in the game. You just need to find the shape on the centre which is hidden in one of the six hexagons. hidden shapes is waiting for you to train your spatial ability. Ready? Features: ◈ Minimalist design ◈ 75 hand-crafted levels ◈ Relaxing music & sounds ◈ Sharpens the mind ◈ Exclusive for iOS WHAT IS SPATIAL ABILITY? Spatial ability is "the aptitude needed to mentally process three-dimensional images of objects." (Fleisig et al. 2004). WHY IS SPATIAL ABILITY IMPORTANT? "There is evidence which indicates that strong spatial skills are required for achievement in science, technology, engineering and mathematics (STEM) careers. Many people, including science and engineering professors, view such skills as important for success in fields like engineering." (Gutierrez, Dominguez, & Gonzalez, 2015) CAN SPATIAL ABILITY BE FURTHER DEVELOPED? "The level of spatial performance someone is capable of may change over time. You are likely to gain in performance through practice, training, and learning, but you may also lose in standing relative to others if they acquire more experience that supports their performance or make more progress in their intellectual development." (Johns Hopkins University, 2018) If you wish to improve or retain the level of your spatial ability, hidden shapes will be the best option for you. Witkin, H. A., Oltman, P. K., Raskin, E., & Karp, S. A. (1971). A manual for the embedded figures test. Palo Alto, CA: Consulting Psychologist Press. Fleisig, R. V., A. Robertson, et al. (2004). Improving the Spatial Visualization Skills of First Year Engineering Students. Inaugural CDEN Design Conference, Montreal, Quebec. Johns Hopkins University. (2018, August 28). Spatial Ability. Retrieved from http://www.jhu.edu: http://web.jhu.edu/cty/STBguide.pdf Martin Gutierrez, J., Garcia Dominguez, M., & Roca Gonzalez, C. (2015). Using 3D virtual technologies to train spatial skills in engineering. International Journal of Engineering Education, 31(1), 323-334.

About

Saving Memo

Test your working memory with a character who performs various jobs to care for their cat. Success in each job depends on how well you recall information, directly impacting task completion speed. This game offers insights into real-world memory application.

Highlights
  • Working memory challenges
  • Character-driven gameplay
  • Job-based progression
  • Cat care simulation
  • Real-world memory application insights
Features
Read full description

Saving Memo is a new way to test working memory. Your character works different jobs to feed your cat Memo. Each job challenges your memory in different ways where the more you remember the faster that you can get the job done. This program can help us understand how people use their memory in real world challenges.

Screenshots

hidden shapes4 screens
Saving Memo4 screens

Verdict

The call

The clearest difference is price: Saving Memo at Free against hidden shapes's $0.99. hidden shapes's advantage is rating (4.1 vs 3.0) and update cadence (every 9 months vs every 50 months). On 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

Saving Memo is free to download; hidden shapes costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

hidden shapes holds the better App Store score, 4.1 against 3.0. That said, the two scores are not equally well evidenced: hidden shapes has 26 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

hidden shapes ships an update every 9 months, Saving Memo every 50 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
hidden shapes versus Saving Memo: the parameters behind the verdict, then further details
Parameterhidden shapesSaving Memo
Price$0.99Free — better
Rating4.1 (26 ratings) — better3.0 (1 ratings)
Positive reviews62.5% of reviews—
Number of ratings26 — better1
Update frequencyEvery 9 months — betterEvery 50 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better12.0
Further details — not scored
Size30 MB92 MB
Age rating4+4+
DeveloperFlat GamesUniversity of California Riverside

In-app purchases

None

hidden shapes

No in-app purchases

None

Saving Memo

No in-app purchases

Questions

Is hidden shapes free?
hidden shapes costs $0.99, with no in-app purchases.
Is Saving Memo free?
Saving Memo is free to download, with no in-app purchases.
Which has better reviews, hidden shapes or Saving Memo?
hidden shapes is rated higher. hidden shapes averages 4.1 out of 5 from 26 ratings, while Saving Memo averages 3.0 from 1 ratings.
Do hidden shapes or Saving Memo have ads?
Neither hidden shapes nor Saving Memo shows ads.
Which is updated more often, hidden shapes or Saving Memo?
hidden shapes ships an update every 9 months, and Saving Memo every 50 months. Most recently, hidden shapes was updated on November 2, 2026 and Saving Memo on November 3, 2026.

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