Comparison

Lock Notes vs My Super Secret Diary Notes

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

My Super Secret Diary Notes

Securely record your daily thoughts, memories, and secrets in a customizable digital journal. Protect your private entries with a lock and enhance them with photos, emoticons, and personalized designs. Your memories are safely stored and accessible across devices.

Highlights
  • Password/Touch ID protection
  • Calendar and list view
  • Search functionality
  • Customizable fonts and colors
  • Photo attachments
  • iCloud synchronization
  • Social media sharing
Features
Read full description

Do you enjoy writing a diary and keeping track of your memories? Do you need a safe place for all your private notes and thoughts? And what is more, you can get a customized diary and make it look just the way you want! This application does just that! My Super Secret Diary is an application that allows you to write a real diary. It offers you a calendar so that you can choose the exact day on which something you want to memorize happened to you. Beside that, you can attach photos to your memory, either from your gallery or take a photo right away from the app. There are also many cute emoticons to fulfill your diary page, which can be transformed by one of our beautiful designs created just for you! FEATURES: *** Lock option – with a pattern, touch ID or a pin code *** Calendar view and a list of all your writings *** Search option to easily find a certain writing *** Different fonts and text colors *** Colorful, wonderfully designed papers for your diary pages *** Start and end date of a memory, tittles, emoticons and photos *** Your memories are saved on iCloud so that they are available on both your iPhone or iPad *** If you want, you can share your memory on all major social networks If you need to protect your private writings from everyone else, this app is the right thing for you. Beside notes, it also keeps photos that you attach to your memory and all of that is permanently saved on iCloud. You can also choose the way you lock your app – with a pattern, touch ID or a pin code so that you make sure that nobody is going to read your private notes. Download this app and start collecting your memories, thoughts and secrets now! ---------------- - Your subscription lasts 1 week or 1 year, depending on the subscription level chosen at the time of purchase. - You will be charged $5.99 for 1 week (includes free trial for 3 days), $19.99 for 1 year, depending on the subscription level chosen at the time of purchase. - Payment will be charged to your iTunes Account at confirmation of purchase. - Your subscription automatically renews unless auto-renewal is turned off at least 24 hours before the end of the current subscription. - Your account will be charged for a renewed subscription within 24 hours prior to the end of current subscription. You will be charged $5.99 for 1 week or $19.99 for 1 year, depending on your subscription level. - You can manage your subscription and switch off the auto-renewal by accessing your account settings after purchase. - You cannot cancel the current subscription during the active subscription period. - Any unused part or time-span of a free trial period will be forfeited, as soon as you purchase a subscription. - You can view our Privacy Policy here: https://www.hive5.studio/privacy-policy/ - You can view our Terms of Use here: https://www.hive5.studio/terms-and-conditions/

Screenshots

Lock Notes4 screens
My Super Secret Diary Notes4 screens

Verdict

The call

The clearest difference is ads: Lock Notes at none against My Super Secret Diary Notes's shown. Lock Notes also leads on review sentiment (73% vs 45%) and update cadence (every 10 days vs every 6 weeks). On price, ratings volume, in-app purchases and monetization model 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. Lock Notes sells 3 in-app purchases, starting at $14.99 per year and My Super Secret Diary Notes sells 12 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Lock Notes holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 1.1K and 1.9K respectively. Written reviews point the same way: 73% of Lock Notes's written reviews are positive against 45% of My Super Secret Diary Notes's.

UpkeepUpdate frequency

Lock Notes ships an update every 10 days, My Super Secret Diary Notes every 6 weeks. The most recent releases landed on September 23, 2026 and September 19, 2026 respectively.

Scorecard5 real differences · 5 level
Lock Notes versus My Super Secret Diary Notes: the parameters behind the verdict, then further details
ParameterLock NotesMy Super Secret Diary Notes
PriceFreeFree
Rating4.5 (1.1K ratings) — better4.3 (1.9K ratings)
Positive reviews73.3% of reviews — better45.1% of reviews
Number of ratings1.1K1.9K — better
Update frequencyEvery 10 days — betterEvery 6 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationSubscriptionSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size8 MB22 MB
Age rating4+4+
DeveloperJulyApps LtdIvan Antic

Customer experience

Lock Notes

All ratings1,149 ratings
Positive89.6%
Neutral1.4%
Negative9.0%
Written reviews831 reviews
Positive73.3%
Neutral6.1%
Negative20.6%

My Super Secret Diary Notes

All ratings1,933 ratings
Positive82.0%
Neutral5.2%
Negative12.8%
Written reviews530 reviews
Positive45.1%
Neutral13.4%
Negative41.5%

User reviews

Lock Notes

From 1.1K App Store ratings

What we love

  • 🔒 Secure notes
  • 👍 Easy to use
  • 🚀 Convenient
  • 🔑 Passcode/biometric protection
  • 💾 Cloud backup

Room to improve

  • 🔒 Limited free notes
  • 💰 Paywall for advanced features
  • 🐛 Crashes and data loss issues
  • 🔍 Lack of search functionality
  • 📁 No folder organization

My Super Secret Diary Notes

From 1.9K App Store ratings

What we love

  • 💕 Helps express feelings
  • 📆 Calendar feature
  • 🎨 Customizable fonts and themes
  • 🔒 Secure for keeping secrets
  • 📝 Convenient way to write diary entries

Room to improve

  • 💰 Need to pay to lock diary
  • 🔒 Locking feature should be free
  • 🐛 Issues with saving entries
  • 🙄 Too many ads
  • 📁 Lack of organization/file system

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

My Super Secret Diary Notes

Reported bugs

4 issues
  • Entries disappearing after exiting app
  • Date/time not displaying correctly
  • App crashing or freezing
  • Syncing issues across devices

Requested features

5 requests
  • Make locking feature free
  • Add dark mode option
  • Improve saving/syncing of entries
  • Reduce ads or make them optional
  • Implement a file/folder system

In-app purchases

3 purchases

Lock Notes

Subscriptions1
  • Auto Backup$14.991 Year
One-time2
  • Unlimited Notes$4.99
  • Lock Notes Pro$9.99
12 purchases

My Super Secret Diary Notes

Subscriptions2
  • PRO Diary3 Days trial$5.997 Days
  • PRO Diary$19.991 Year
One-time10
  • Background Style 1$0.99
  • Background Style 4$0.99
  • Background Style 6$0.99
Show 7 more
  • Background Style 10$0.99
  • Background Style 11$0.99
  • Remove Ads$1.99
  • Long Audio Notes$1.99
  • Lock Notes$2.99
  • Pro Pack$4.99
  • Pro Pack$14.99

Questions

Is Lock Notes free?
Lock Notes is free to download, with in-app purchases available.
Is My Super Secret Diary Notes free?
My Super Secret Diary Notes is free to download, with in-app purchases available.
Which has better reviews, Lock Notes or My Super Secret Diary Notes?
Lock Notes is rated higher. Lock Notes averages 4.5 out of 5 from 1.1K ratings, while My Super Secret Diary Notes averages 4.3 from 1.9K ratings.
Do Lock Notes or My Super Secret Diary Notes have ads?
My Super Secret Diary Notes shows ads; Lock Notes does not.
Which is updated more often, Lock Notes or My Super Secret Diary Notes?
Lock Notes ships an update every 10 days, and My Super Secret Diary Notes every 6 weeks. Most recently, Lock Notes was updated on September 23, 2026 and My Super Secret Diary Notes on September 19, 2026.

Other comparisons