Comparison

Stack Guru vs Cube Algorithms X

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

Head to head
About

Stack Guru

This app helps users memorize and practice a specific card stack, offering customizable practice modes and scheduled reminders. It features seamless integration with Apple Watch for on-the-go practice and progress tracking.

Highlights
  • Customizable practice modes
  • Scheduled practice reminders
  • Apple Watch integration
  • Dark mode support
  • CloudKit (iCloud) data security
  • Offline practice capability
Features
Read full description

Become Mnemonica stack guru! Select how and what to practice, schedule reminders and practice directly on your wrist using Apple Watch - all with dark mode support! WHY While studying Mnemonica by Juan Tamariz, I started to look for an app to serve me as a learning tool. I wanted the app to automatically remind me to practice as well as being able to quickly practice on my Apple Watch (preferably with an complication displaying some daily progress). Unfortunately I did not find what I was looking for and decided to implement the app myself. This app became Stack Guru. CUSTOMIZE Practice parts of the stack, or the whole stack - you decide! Create your custom practice experience by combining practice modes such as Card to Number, Number to Card, What Comes After, What Comes Before or ACAAN, together with selected parts of the stack. This let you either focus on cementing the basics or perfecting your existing knowledge and master the stack. REMINDER Repetition is the mother of all learning. Stack Guru can help you both memorize and to keep the stack fresh in memory. Simply set reminders and let the app notify when to have a quick practice session. Like your own personal stack trainer. APPLE WATCH Having the tool directly on your wrist makes it super easy to take a short break and focus on the stack. Anywhere and anytime! Use the complication to get the progress of your daily goal and have a quick practice session only a tap away. SECURE AND PRIVATE Practice result data stored online is stored using Apple CloudKit (iCloud) to keep the data secure and private to you. The private database data is accessible only by you. When Stack Guru is used offline, the data is temporarily saved on the device to be synchronized and removed later, when the app is back online.

About

Cube Algorithms X

This app provides a comprehensive collection of algorithms for various magic cube puzzles. It features realistic 3D graphics, custom session creation, and support for iCloud synchronization. Learn and master complex cube solving techniques with detailed tutorials.

Highlights
  • Supports 2x2x2 to 4x4x4 cubes
  • Includes F2L, OLL, PLL, and more
  • Realistic 3D graphics and animation
  • Create custom algorithm sessions
  • iCloud synchronization
  • Customizable puzzle and fingertrick colors
Features
Currently charting
Read full description

Algorithms X is a powerful Magic Cube Algorithms tool for cubers and users who want to learn Magic Cube Features - Support iCloud, Sync your custom algorithm session - Support 2x2x2, 3x3x3, 4x4x4, Pyraminx, Megaminx, Square1, Skewb - Realistic 3D graphics and animation - You can create your own sessions(all puzzle) - Contains every F2L, OLL and PLL - Contains every 4LLL - Contains every Ortege - Contains every CLL EG1 EG2 - Contains every COLL, WV, SV, ZBLL, CMLL - Contains Pyraminx Intermediate and L4E - Contains Square1 Intermediate and Advanced - Contains Skewb Algorithms and Megaminx Algorithms - Customize all color of puzzle - Customize fingertrick colors Privacy Policy: https://res.kdcubeapp.com/algorithmsx_privacy.html Support: andzhaov@gmail.com

Screenshots

Stack Guru4 screens
Cube Algorithms X4 screens

Verdict

The call

The clearest difference is price: Stack Guru at Free against Cube Algorithms X's $5.99. Stack Guru also leads on update cadence (monthly vs every 3 months). Cube Algorithms X's advantage is chart position (#191 vs unranked) and ratings volume (32 vs 5). On rating, review sentiment, ads and in-app purchases 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

Stack Guru is free to download; Cube Algorithms X costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Stack Guru against 4.8 for Cube Algorithms X. That said, the two scores are not equally well evidenced: Cube Algorithms X has 32 ratings behind it against 5, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Stack Guru ships an update monthly, Cube Algorithms X every 3 months. The most recent releases landed on June 4, 2026 and September 23, 2026 respectively.

Scorecard5 real differences · 6 level
Stack Guru versus Cube Algorithms X: the parameters behind the verdict, then further details
ParameterStack GuruCube Algorithms X
PriceFree — better$5.99
Rating4.8 (5 ratings)4.8 (32 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings532 — better
Update frequencyMonthly — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
Best chart rank—#191 — better
DevicesiPhone, iPod, Apple WatchiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size4 MB14 MB
Age rating4+4+
DeveloperJonas Eriksson巍 赵

Customer experience

Stack Guru

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Cube Algorithms X

All ratings32 ratings
Positive96.9%
Neutral0.0%
Negative3.1%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Stack Guru

No in-app purchases

None

Cube Algorithms X

No in-app purchases

Questions

Is Stack Guru free?
Stack Guru is free to download, with no in-app purchases.
Is Cube Algorithms X free?
Cube Algorithms X costs $5.99, with no in-app purchases.
Which has better reviews, Stack Guru or Cube Algorithms X?
Stack Guru and Cube Algorithms X are both rated 4.8 out of 5 on the App Store, from 5 and 32 ratings respectively.
Do Stack Guru or Cube Algorithms X have ads?
Neither Stack Guru nor Cube Algorithms X shows ads.
Which is updated more often, Stack Guru or Cube Algorithms X?
Stack Guru ships an update monthly, and Cube Algorithms X every 3 months. Most recently, Stack Guru was updated on June 4, 2026 and Cube Algorithms X on September 23, 2026.

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