Comparison

Memory Helper vs Memory Ark

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

Head to head
About

Memory Helper

This app helps you remember information by scheduling reviews at scientifically optimal times based on the Ebbinghaus forgetting curve. It offers flexible organization and review options to maximize learning efficiency and minimize wasted effort.

Highlights
  • Spaced repetition scheduling
  • Customizable review curves
  • Organize with types and tags
  • Search and image support
  • Markdown syntax support
  • Calendar view for scheduling
  • Cloud synchronization
Features
Read full description

[What is Memory Helper?] Have you ever had such an experience that it's hard to recall knowledge when you want use it, even you have memorized it? Forgetting is an inevitable objective law, but letting it happen is a huge waste of your own efforts. Fortunately, review is the most effective way to fight forgetting. On the other hand, excessive review is also a waste of effort. For example, like constantly cleaning the ground which is already very clean. A lot of effort, but little effect. Memory Helper is a memory auxiliary tool designed according to the Ebbinghaus forgetting curve aimed to help you review at the most scientific point-in-time and achieve the best results in the least amount of time. [How do I use Memory Helper?] It's very easy to get started with Memory Helper. Adding a memory, then Memory Helper will remind you to review at the right time. When you have further requirements, you will find that Memory Helper has provided solutions, such as: - If you want to use different review strategies for different types of memory materials, you can adjust the review curve. - If you forget to add memories when you finish memorizing, you can add them and modify the creation time at any time. - If you have more and more memories and want them to be well-organized, types (like directories) and tags are prepared. - If you want to locate a memory more quickly, just search it. - If you don't want to type in characters, you can add images. And image editing is supported. - If you want your text to be more expressive, markdown syntax is supported, and adding images is optimized specially. - If you don't want to review according to the expiration time order exactly, but want to review the same kind of memory first, the review interface supports filtering by type and tag. - If you want to browse reviews scheduled in a few days to facilitate the arrangement of new memory tasks, calendar view is prepared for you. - If you are overwhelmed by too many review tasks and want to give up, the intelligent curve can help adjust each review time point, relieve the pressure but never compromise the effect. - If you want to change your phone, you don't have to worry about data loss at all. All the data is synchronized to the server. Just log in to the same account and the data is close at hand. There are much more features waiting for you to explore. [Memory Helper is not what?] Memory Helper is not a panacea to enable you not forget anything. It can not replace you to remember. You still need to memorize and recall. [Contact me] If you have any questions, don't hesitate to communicate me: memoryhelper@163.com

About

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.

Highlights
  • 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
Features
Read full description

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

Memory Helper4 screens
Memory Ark4 screens

Verdict

The call

The clearest difference is update cadence: Memory Helper at every 5 days against Memory Ark's every 2 months. Memory Helper also leads on ratings volume (65 vs 1). On price, rating, 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

Both are free to download. Memory Helper sells 4 one-off in-app purchases 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Memory Helper against 5.0 for Memory Ark. That said, the two scores are not equally well evidenced: Memory Helper has 65 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Memory Helper ships an update every 5 days, Memory Ark every 2 months. The most recent releases landed on October 22, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level
Memory Helper versus Memory Ark: the parameters behind the verdict, then further details
ParameterMemory HelperMemory Ark
PriceFreeFree
Rating4.9 (65 ratings)5.0 (1 ratings) — better
Positive reviews84.2% of reviews—
Number of ratings65 — better1
Update frequencyEvery 5 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size102 MB6 MB
Age rating4+4+
Developer剑津 付世超 徐

Customer experience

Memory Helper

All ratings65 ratings
Positive96.9%
Neutral3.1%
Negative0.0%
Written reviews38 reviews
Positive84.2%
Neutral5.3%
Negative10.5%

Memory Ark

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Memory Helper

Reported bugs

10 issues
  • 🐛 Cannot log in with WeChat
  • 🐛 Cannot register with email or WeChat
  • 🐛 English pronunciation is poor
  • 🐛 Cannot find refund option
  • 🐛 App not fully translated to English
Show 5 more
  • 🐛 Images in notes cannot be loaded
  • 🐛 App crashes after update
  • 🐛 App crashes on 7p
  • 🐛 Payment issues after purchase
  • 🐛 Notes are difficult to save

Requested features

10 requests
  • 💡 Open backend API for integrations
  • 💡 Add images
  • 💡 Add audio recording
  • 💡 One-time payment model
  • 💡 Sync with web/desktop version
Show 5 more
  • 💡 Mac version
  • 💡 Real-time word extraction from web
  • 💡 More functions
  • 💡 Intelligent adjustment of review nodes
  • 💡 Add pictures to notes

Memory Ark

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Memory Helper

One-time4
  • 1 Month Subscription$1.99
  • 6 Months Subscription$6.99
  • 1 Year Subscription$9.99
Show 1 more
  • 3 Years Subscription$19.99
2 purchases

Memory Ark

Subscriptions2
  • Monthly Membership$0.991 Month
  • Annual Membership$2.991 Year

Questions

Is Memory Helper free?
Memory Helper is free to download, with in-app purchases available.
Is Memory Ark free?
Memory Ark is free to download, with in-app purchases available.
Which has better reviews, Memory Helper or Memory Ark?
Memory Ark is rated higher. Memory Helper averages 4.9 out of 5 from 65 ratings, while Memory Ark averages 5.0 from 1 ratings.
Do Memory Helper or Memory Ark have ads?
Neither Memory Helper nor Memory Ark shows ads.
Which is updated more often, Memory Helper or Memory Ark?
Memory Helper ships an update every 5 days, and Memory Ark every 2 months. Most recently, Memory Helper was updated on October 22, 2026 and Memory Ark on October 7, 2026.

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