Stack Guru vs Stack Memory
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Customizable practice modes
- Scheduled practice reminders
- Apple Watch integration
- Dark mode support
- CloudKit (iCloud) data security
- Offline practice capability
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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.
Stack Memory
This educational tool aids magicians in mastering mnemonic and Aronson stacking techniques. It provides a focused environment for practicing and reinforcing complex card memorization methods.
- Mnemonic stacking practice
- Aronson stacking practice
- Card memorization aid
- Magician study tool
- Focused learning environment
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Mnemonica and Aronson stack study aid for magicians.
Screenshots
Verdict
The clearest difference is update cadence: Stack Memory at every 2 days against Stack Guru's monthly. Stack Guru's advantage is review sentiment (100% vs 73%) and rating (4.8 vs 4.5). On price, ratings volume, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Stack Guru holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 5 and 8 respectively. Written reviews point the same way: 100% of Stack Guru's written reviews are positive against 73% of Stack Memory's.
Stack Guru ships an update monthly, Stack Memory every 2 days. The most recent releases landed on June 4, 2026 and July 9, 2026 respectively.
| Parameter | Stack Guru | Stack Memory |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | 4.5 (8 ratings) |
| Positive reviews | 100.0% of reviews — better | 72.7% of reviews |
| Number of ratings | 5 | 8 — better |
| Update frequency | Monthly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, Apple Watch |
| Requires iOS | 13.0 — better | 17.2 |
| Further details — not scored | ||
| Size | 4 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Jonas Eriksson | CHRIS HODGE |
Customer experience
Stack Guru
Stack Memory
In-app purchases
Stack Guru
No in-app purchases
Stack Memory
No in-app purchases
Questions
Is Stack Guru free?
Is Stack Memory free?
Which has better reviews, Stack Guru or Stack Memory?
Do Stack Guru or Stack Memory have ads?
Which is updated more often, Stack Guru or Stack Memory?
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