Ebbinghaus Planner vs Memory Ark
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ebbinghaus Planner
This app helps you memorize information efficiently by scheduling reviews based on the forgetting curve. It automates the process of recalling vocabulary, formulas, and other data at optimal times, reducing the need for manual scheduling and ensuring you never miss a review session.
- Automatic review scheduling
- Subject and item management
- Today's tasks view
- Customizable notifications
- Progress visualization
- Simple and intuitive interface
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Ebbinghaus Planner is a study management app designed to maximize memorization efficiency by guiding you to review at the optimal time based on the “forgetting curve.” It reduces the hassle of manually scheduling review intervals on your calendar and helps you recall information at the most effective moments. Main Features - Automatic Review Scheduling: Automatically generates review dates based on Ebbinghaus intervals (e.g., 1 day, 3 days, 7 days, etc.) - Subject & Item Management: Easily register, edit, and check off memorization items by subject or topic - Today’s Tasks: Quickly view all items you need to review today in one screen - Notifications: Custom reminders to make sure you never miss a review - Progress Visualization: See your growth with completion rates and cumulative review stats - Simple Interface: A minimal, intuitive design that helps you stay focused Recommended For - Learners who want to improve efficiency when memorizing basic information such as vocabulary, definitions, or formulas - Anyone who often misses the right review timing during exam preparation - Users who want to systematically maintain and manage their own memorization lists Developer’s Note I’ve personally used this app and experienced significant improvements in memory retention. If the Ebbinghaus method suits you, this planner will reduce the burden of repetition and help you retain information longer. Automate your review sessions now and remember more effectively, for longer. Terms of Service & Privacy Policy Please make sure to read the following before using the app: - Terms of Service: (https://www.notion.so/22bcda0381e9804f9bd3c0c87675f05c?source=copy_link) - Privacy Policy: (https://www.notion.so/21ccda0381e980a4937cefda3d4330a3?source=copy_link)
Memory Ark
This app helps users combat forgetting by using the Ebbinghaus Forgetting Curve to create personalized review schedules. It offers features like task management, progress tracking, and smart rescheduling to make learning more efficient and effective.
- Ebbinghaus Forgetting Curve integration
- Daily and calendar task management
- Task categorization with tags
- Detailed review session data
- Customizable memory curves
- Smart task rescheduling
- Retroactive check-in for missed tasks
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The biggest challenge in memory is combating forgetting. Forgetting is a natural human tendency, and this principle was discovered long ago by Ebbinghaus, known as the famous Ebbinghaus Forgetting Curve. Our software incorporates the Ebbinghaus Curve to create detailed reminder plans. Users only need to complete their daily tasks on time to achieve long-term memory, making learning more efficient. Learning itself is complex, and designing a simple and user-friendly app is our core principle. Features of this software: 1. Today's Tasks: Review the intelligently scheduled daily tasks on time. 2. Calendar Tasks: View the number of daily tasks at a glance for better planning. 3. All Tasks: All tasks are grouped by status, keeping progress fully under control. 4. Node Preview: Track detailed data on each review session for strategic planning. 5. Custom Curve: Customize your memory curve based on personal habits—what suits you best. 6. Task Tags: Categorize tasks systematically, with home page tasks displayed in tag order. 7. Smart Postponement: Delayed task nodes are automatically rescheduled, preventing memory confusion. 8. Retroactive Check-in: A powerful make-up feature—no matter how many days you missed, you can still check in. Auto-Renewable Subscription Service Description Subscription Services: Monthly Membership (Auto-Renewable Monthly) Annual Membership (Auto-Renewable Yearly) Subscription Prices: Monthly Membership: $0.99/month (approx. 3 CNY) Annual Membership: $2.99/year (approx. 18 CNY) Payment: Payment will be charged to your iTunes account upon confirmation of purchase. Auto-Renewal: Your iTunes account will be charged within 24 hours before the end of the current subscription period. Upon successful payment, the subscription period will be extended for another term. Cancellation: You can turn off auto-renewal at any time by going to your iTunes/Apple ID settings at least 24 hours before the end of the current subscription period. No further charges will be applied after cancellation. Contact Us: If you encounter any issues, please contact us at: zhiledaoyuan@sina.com Terms of Use: https://www.yuque.com/zldy/ni1wwu/etyg8a76ok26n9c1 Privacy Policy: https://www.yuque.com/zldy/ni1wwu/upx1vcs1g1ng60pr
Screenshots
Verdict
The clearest difference is rating: Memory Ark at 5.0 against Ebbinghaus Planner's 4.4. Memory Ark also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.0). Ebbinghaus Planner's advantage is update cadence (every 10 days vs every 2 months) and ratings volume (14 vs 1). On price, 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
Both are free to download. Ebbinghaus Planner sells 4 in-app purchases, starting at $2.99 per month and Memory Ark sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
Memory Ark holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Ebbinghaus Planner has 14 ratings behind it against 1, so its average is the more settled of the two.
Ebbinghaus Planner ships an update every 10 days, Memory Ark every 2 months. The most recent releases landed on September 21, 2026 and September 19, 2026 respectively.
| Parameter | Ebbinghaus Planner | Memory Ark |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (14 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 95.1% of reviews | — |
| Number of ratings | 14 — better | 1 |
| Update frequency | Every 10 days — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 39 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | SeungGi Lee | 世超 徐 |
Customer experience
Ebbinghaus Planner
Memory Ark
In-app purchases
Ebbinghaus Planner
- Monthly14 Days trial$2.991 Month
- Monthly$2.991 Month
- Yearly14 Days trial$19.991 Year
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- Yearly$19.991 Year
Memory Ark
- Monthly Membership$0.991 Month
- Annual Membership$2.991 Year
Questions
Is Ebbinghaus Planner free?
Is Memory Ark free?
Which has better reviews, Ebbinghaus Planner or Memory Ark?
Do Ebbinghaus Planner or Memory Ark have ads?
Which is updated more often, Ebbinghaus Planner or Memory Ark?
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