Gemius vs MemoryStash
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gemius
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Gemius turns any topic into a personalized powered course in seconds. Simply describe what you want to learn, whether it's Python, piano, marketing, or anything in between, and Gemius builds a complete course with structured chapters, bite-sized lessons, and quiz questions tailored just for you. LEARN YOUR WAY • AI generates a full course from any topic you choose • 8 structured chapters with 40 lessons per course • Quiz questions to test and reinforce your knowledge • Beginner, Intermediate, and Advanced difficulty levels STAY MOTIVATED EVERY DAY • Daily Bounties keep you engaged with fresh challenges • Earn XP and coins as you complete lessons • Build your streak by checking in every day • Level up from Newcomer all the way to Immortal COMPETE AND ACHIEVE • Climb the global leaderboard and compete with other learners • Unlock trophies as you hit milestones • Track your progress with a detailed stats dashboard • View your learning activity log and course history YOUR PERSONAL QUEST LOG • All your courses in one place • See progress at a glance with visual progress bars • Pick up right where you left off Gemius is for curious minds who want to learn anything, at any time, on their own terms. Whether you have 5 minutes or 5 hours, there's always a lesson waiting for you. Start your first quest today.
MemoryStash
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Stop forgetting. Start remembering. Whether you are a student cramming for exams, a professional memorizing presentations, or someone looking to keep their mind sharp, this app is your ultimate personal memory gym. Train your brain using the exact techniques used by global memory athletes and cognitive science. Our structured, step-by-step path breaks down complex mnemonic systems into bite-sized, interactive daily practices. Every association you build makes your brain stronger! Your 5-Step Journey to Super-Memory: 1. The Major System: Convert digits into phonetic sounds. Say goodbye to raw numbers and hello to memorable words! 2. Peg Words: Attach vivid, concrete words to every 2-digit pair (00-99) for lightning-fast numerical recall. 3. PAO (Person-Action-Object): Group numbers into highly visual, dynamic action scenes. 4. Memory Palace (Method of Loci): Map your knowledge onto familiar locations and navigate through your mind to retrieve it. 5. Acronyms: Compress complex lists, formulas, and academic facts into memorable, fun phrases. Powerful Features Built for Mastery: Interactive Quizzes: Test your recall with custom speed quizzes, adaptive difficulty modes, and real-time timers. Mobile Number Storyteller: Input any long number (like a phone number) and instantly generate peg-word breakdowns and visual stories to lock it into your long-term memory. Visual Personalization: Add your own custom images to your Peg and PAO flashcards to make memory associations uniquely yours. Ready-to-Use Reference Guides: Quick-access sheets for the Major System phonetic rules, peg words, and built-in classic acronyms (like planet order, music scales, and geography). Performance Tracking: Track your accuracy, reaction times, and daily streaks to watch your recall speed soar. Get ready to build a mind like a steel trap. Download now and build your first Memory Palace today!
Screenshots
Verdict
The clearest difference is iOS requirement: MemoryStash at 15.1 against Gemius's 17.0. On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Gemius | MemoryStash |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 53 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Eldar Terzic | GK SOFT |
In-app purchases
Gemius
No in-app purchases
MemoryStash
No in-app purchases









