Lock Notes vs MemoP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lock Notes
Securely store and protect your private notes with a passcode or Touch ID. Keep sensitive information like passwords, secrets, and diary entries safe from unauthorized access. Backup and sync notes across devices, customize their appearance, and even add images.
- Passcode and Touch ID protection
- Security question recovery
- iCloud backup and sync
- Customizable font style and size
- Insert images into notes
- Print and share notes
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FINALLY AN APP FOR ALL YOUR PRIVATE NOTES! Keep your most valuable, private, and secret notes away from prying eyes. Keep them all totally secret and safe. Store passwords, secrets, contacts or just keep your diary private. KEY FEATURES: • Use Touch ID or passcode to safely lock access to your private notes. • Set a security question and answer in case you forget your passcode. • Safely Backup your valuable notes to iCloud. • Quickly Sync notes between iPhone & iPad with iCloud. • Sort notes list by name, date or manual. • Select notes font style and size. • Insert images & photos into notes. • Print your notes. • Send notes via text message or email. • Save notes to Camera Roll. • Support for Emoji Emoticons. This app allows you to automatically backup your notes for $9.99 a year through an auto-renewing subscription. Subscriptions will be charged to your credit card through your iTunes account. Your subscription will automatically renew unless cancelled at least 24 hours before the end of the current period You will not be able to cancel a subscription during the active period. You can manage your subscriptions in the Account Settings after purchase. Terms of use: http://www.katans.com/terms-of-use Privacy policy: http://www.katans.com/privacy-policy This app can be freely used up to two notes. A SINGLE PURCHASE COVERS ALL YOUR IPHONE AND IPAD DEVICES.
MemoP
Securely store your notes with password protection and biometric authentication. Organize, edit, and share your memos with ease, featuring customizable backgrounds and search capabilities.
- Password lock with Touch ID/Face ID
- Drag and drop memo organization
- Swipe to delete notes
- Direct sharing to messages and social media
- Customizable backgrounds from photo albums
- Search and character search functions
- Adjustable font size and color
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MemoP is a memo app with ease of operation, utility, password lock function. Compatible with Touch ID / Face ID. ◆ Password Lock function: - Password Lock can be selected. - When Password Lock setting is done, it will be locked when in the background etc, so it is safe. You can also set the Touch ID / Face ID. ◆ Edit function: - You can move memos by dragging and dropping. Deleting notes can also be done with swipe, and operability is simplified. - Because you can lock the edits, if you keep the important memo locked, you can prevent mistakes that you accidentally erase. - Selective deletion, all delete functions are also included ◆ Activity function: - Functions that can post directly to messages, mail, LINE, Twitter etc. ◆ Background selection function: - You can select the background of the main screen. In addition to existing patterns, you can also select and set images from photo albums. ◆ Search refinement function: - It is also possible to narrow down the target memo and display it by entering a search word. ◆ Character search function on the edit screen: - Even if you write a lot of notes, it is easy to find where you wrote it. ◆ Font setting: - Font size can be changed (list screen, memo editing screen) - Select font color on the memo edit screen (select from default, black, and gray) ※ The maximum number of characters that can be entered in one memo is 100,000 (6.0 or later). ※ Deleting an application will delete the saved memo data. ※ If the password is unknown, third parties can not invalidate the lock, so please be careful when managing the setting. ◆ Note: Ads will be hidden if you pay.
Screenshots
Verdict
The clearest difference is monetization model: MemoP at free with in-app purchases against Lock Notes's subscription. MemoP also leads on review sentiment (100% vs 73%). Lock Notes's advantage is ads (none vs shown) and ratings volume (1.1K vs 28). On price, rating, update cadence 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. Lock Notes sells 3 in-app purchases, starting at $14.99 per year and MemoP sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.5 for Lock Notes against 4.5 for MemoP. That said, the two scores are not equally well evidenced: Lock Notes has 1.1K ratings behind it against 28, so its average is the more settled of the two. Written reviews are what separate them: 73% of Lock Notes's written reviews are positive against 100% of MemoP's.
Lock Notes ships an update every 10 days, MemoP every 2 weeks. The most recent releases landed on September 30, 2026 and September 18, 2026 respectively.
| Parameter | Lock Notes | MemoP |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (1.1K ratings) | 4.5 (28 ratings) |
| Positive reviews | 73.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 1.1K — better | 28 |
| Update frequency | Every 10 days — better | Every 2 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 8 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | JulyApps Ltd | Masashi Sasaoka |
Customer experience
Lock Notes
MemoP
Bugs and requests
Lock Notes
Reported bugs
3 issues- Notes disappearing after updates
- Inability to access notes after device reset
- Sync issues between devices
Requested features
5 requests- Advanced formatting options
- Ability to change passcode
- Improved search capabilities
- Folder/organization system
- Better backup and restore options
MemoP
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Lock Notes
- Auto Backup$14.991 Year
- Unlimited Notes$4.99
- Lock Notes Pro$9.99
MemoP
- Ad-free$1.99








