Memory Helper vs KeyMemo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Spaced repetition scheduling
- Customizable review curves
- Organize with types and tags
- Search and image support
- Markdown syntax support
- Calendar view for scheduling
- Cloud synchronization
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[What is Memory Helper?] Have you ever struggled to recall something when you needed it, even though you had memorized it? Forgetting is an inevitable objective law, but letting it happen is a huge waste of your own efforts. Fortunately, review is an 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 aid based on the Ebbinghaus forgetting curve, aimed at helping you review at spaced intervals and make effective use of your study time. [How do I use Memory Helper?] It's very easy to get started with Memory Helper. Add a memory, and 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 for 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 strictly in due date order, 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 for the next few days to facilitate the arrangement of new memory tasks, a calendar view is prepared for you. - If you are overwhelmed by too many review tasks and want to give up, Intelligent Adjustment can adjust future review times based on when you review and how well you recall the material, helping you manage the workload. - If you want to change your phone, first sync your data to the server. Then log in to the same account on your new phone to access the data you have synced. There are many more features waiting for you to explore. [What isn't Memory Helper?] Memory Helper is not a panacea that guarantees you will never forget anything. It cannot do the remembering for you. You still need to memorize and recall. [Contact me] If you have any questions, don't hesitate to contact me: memoryhelper@163.com
KeyMemo
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KeyMemo는 계정과 비밀번호 단서를 간단하게 정리하는 보안 메모 앱입니다. 전체 비밀번호를 그대로 저장하기보다 나만 알아볼 수 있는 조각, 힌트, 카테고리로 관리하도록 설계했습니다. 계정별 ID, 카테고리, 즐겨찾기, My key 조각 아이디어를 활용해 중요한 로그인 정보를 빠르게 찾고 기억할 수 있습니다. 마스터 PIN으로 앱을 열고 필요한 항목을 카테고리별로 정리하세요. 설정의 암호화 백업 기능을 사용하면 계정 메모를 비밀번호로 보호된 파일에 저장하고, 앱 재설치나 기기 변경 후 복원할 수 있습니다. 마스터 PIN은 백업 파일에 포함되지 않습니다. KeyMemo의 모든 기능은 구독이나 앱 내 결제 없이 무료로 이용할 수 있습니다.
Screenshots
Verdict
The clearest difference is update cadence: Memory Helper at weekly against KeyMemo's every 3 months. 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. Memory Helper sells 4 one-off in-app purchases and KeyMemo sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
Memory Helper ships an update weekly, KeyMemo every 3 months. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.
| Parameter | Memory Helper | KeyMemo |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (65 ratings) — better | — |
| Positive reviews | 84.2% of reviews | — |
| Number of ratings | 65 — better | — |
| Update frequency | Weekly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 96 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | 剑津 付 | Moon gu Lee |
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
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- 🐛 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
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- 💡 Mac version
- 💡 Real-time word extraction from web
- 💡 More functions
- 💡 Intelligent adjustment of review nodes
- 💡 Add pictures to notes
KeyMemo
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Memory Helper
- 1 Month Subscription$1.99
- 6 Months Subscription$6.99
- 1 Year Subscription$9.99
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- 3 Years Subscription$19.99
KeyMemo
- KeyMemo Plus7 Days trial$0.991 Month








