Comparison

Note Lock ~ Keep your secret vs Calculator Lock

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

Head to head
About

Note Lock ~ Keep your secret

Securely store and manage private notes, ideas, and journals with advanced locking mechanisms and privacy features. Organize your thoughts with rich media, customization options, and backup capabilities.

Highlights
  • Folder and pattern lock
  • Anti-intruder surveillance
  • Self-destruct data option
  • Add pictures and stickers
  • Customizable themes and fonts
  • Backup and restore data
  • Calendar and hybrid views
Features
Read full description

THE BEST NOTE LOCK APP EVER * TRUSTED OVER 2,800,000 USERS AROUND THE GLOBE. TOP 100 CHART IN MORE THAN 100 COUNTRIES. DECOY PASSCODE PROTECT YOU FROM FORCE UNLOCK. :: NEW! Recently Deleted recover notes you deleted by mistake before they are permanently removed. :: NEW! Calendar View and Hybrid view! :: Protect your private notes with Note Lock :: Separate your secret notes from device note :: Safely store and manage unlimited secret collections :: More exciting and fun with pencil + eraser animations :: Create new notes, add pictures and save to the app. :: Add fun and ease of use with stickers and sticky notes :: Lecture notes, business notes, secret notes, secret ideas or information, private journal with pictures and description, class lecture, love letter, diary and many more. :: Personal diary on your iPhone :: Backup your information to use in case your device is ever replace, lost or damaged. SOME OF HUNDREDS REVIEW FROM USERS WHY THEY LOVED NOTE LOCK? - "The pencil feature and the dust is amazing!" - "Great app to put my thoughts in and keep them for only my interpretation." - "I get carried away, i write the littlest detail like, what i had for dinner, etc. It's so easy to use. I strongly recommend." - "Just wrote my 10 page term paper on this bad boy, love it. Just copied and pasted and emailed it to myself and made all the font adjustments there." - "I have tried at least 20 other apps and this one is the best." - "Does all I want and more, worth the money MORE FEATURES: SECURITIES: - Lock Type: Folder Lock, Super discreet in iOS13 folder style. - Surveillance system, enter wrong passcode or pattern 3 times your recorded security camera will appear. - Anti Intruder System, any break-attemp will captured with photo&video and date&time. - Self-Destruction, 5 chances to correct passcode. After that, the app will automatically erase all data in this app. (Default is off) - Back up passcode to your e-mail. - Lock2 Technology: Passcode, Pattern lock and new folder lock! - Lock when inactive. - Double account to fool intruders. NOTE FEATURES • Recently Deleted for recovery • Sticky notes inside notes • Add stickers, themes, and font colors • 300+ fonts and 30+ themes • Improved search and sorting by date/month • Photo attachments and gallery preview • Email sharing ACCESSORIES: - Theme selection: more than 30 themes - Font selection: more than 300 font formats - More fun with pencil and eraser animations - Support landscape orientation - Discrete app name BENEFITS from Note Lock - For business purposes - Secret ideas or information - Private journal with pictures and description - Class lecture - Love letter - And many more ... - Diary Note Lock Pro With a Note Lock Pro subscription, you have unlimited access to all features Advertisements will be removed automatically Access all lock styles. Unlimited notes can be added. Unlimited use of Sticky note Unlimited access to Sticker Unlimited access to all themes and fonts Secure backup & sync your notes And many more If you upgrade Note Lock Pro subscription, payment will be charged to your iTune account. And your account will be charged for renewal 24-hours prior to the endow the current period. Subscriptions may be managed by you and auto-renewal may be turned off by going to the your Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchases a subscription. Please read our Privacy Policy for further information. Privacy Policy : https://iappcreation.com/privacy-policy/nl Terms and Conditions : https://iappcreation.com/privacy-policy/nl#terms

About

Calculator Lock

Securely hide your private photos, videos, contacts, and passwords behind a disguised calculator interface. Protect your sensitive files with a secret vault and access them only through the app's unique interface. Features include intruder selfies and cloud backups.

Highlights
  • Photo hiding
  • Video hiding
  • Contact hiding
  • Password manager
  • Disguise mode
  • Intruder selfie
  • Cloud backup
Features
Read full description

Calculator Lock is photo hiding app where you can hide Photo, video lock, under Secret Vault protected by hidden calculator Lock app. This Secret photo vault calculator video vault is just work as photo lock and video locker where you can lock your files like, gallery Vault. Vault app can get photo album, gallery or file manager private photos, videos, movies and you can play hidden videos inside Calculator Vault. It has a Built-in Photo Viewer to view lock photo. It is Easy to Manage, Delete, Unhide, hide Pictures in gallery vault. It also provides you with other useful functions, including Vault app, video locker, Secure vault, Hide Photo etc. ●● Secret calculator vault Key Features ●● ===================================== ● Photo hide Photo lock will be stored data in hidden photo vault calculator to access by photo lock app. Hide Photo will not be shown in any other vault app, photo album, gallery vault or file manager. You can play or view all your locked photos inside a safe calculator app with an amazing Inbuilt Image viewer. ● Hide Video Inside Video vault you can play lock video by Secure vault with inbuild video player. when you hide my photo keep others away from your private video lock. You can hide video inside Secret Calculator safe. The calculator app hider provides you to lock video and play that video lock inside the app. ● Hidden calculator vault app The calculator vault app provides you so many new futures besides photo lock and video lock. Inside safe Calculator app hider you can create new contact and hide contact. ● Lock files in secret gallery Photo hiding app you can create & share your Personal Notes, hide Contact, hide pics within secret calculator app without exporting it. You can access it inside the calculator app hider ● My Password Manager My Password Manager is unique future for HidePass where you can Hide Password and store all password with protected files, and can only be see inside hidden gallery lock. Secure Vault has password lock in encrypted formats with Secret calculator app. ● Restore media in private photo vault You can Restore all of your data from secret photo vault, once you open app to hide pictures inside hidden gallery lock, you can anytime export secret gallery lock data within Secret Calculator and it will move from Secret vault to your phone. ● Disguise Mode in Spy calculator Lock Calculator Lock has Disguise Mode feature that enables users to change the app's icon or logo to something less conspicuous, providing an extra layer of privacy and security. ● Intruder selfie in Photo Lock App Snap Intruder Capture selfie photos of Intruder when someone tries to break in your Secret vault with wrong passwords. ● iCloud Backup and Google Drive Backup Securely back up your data using Google Drive or iCloud backup options. This feature ensures that your data safely stored and can be restored whenever needed. ● App Migration Easily migrate your data from an old device to a new one it allows seamless transfer of all your data ensuring you don't lose any data during the transition. -----------FAQ----------- Q: How to open? A: Enter your password on hidden calculator photo vault and press '=' button to open. Q: What if I forget my password? A: You can enter “11223344=” for master reset your password by verifying your security question and reset the password. => IMPORTANT - Calculator Lock - Photo Lock & safe Calculator Vault app does not copy or store your Photos, Videos, Audio, Contacts, Notes, Passwords, etc. - Do not uninstall Calculator Vault - Secure Vault app otherwise, all your files will be lost forever. Here is EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://calculatorlock.macymind.com/privacy-policy-calculator-lock.php

Screenshots

Note Lock ~ Keep your secret4 screens
Calculator Lock4 screens

Verdict

The call

The clearest difference is price: Calculator Lock at Free against Note Lock ~ Keep your secret's $1.99. Calculator Lock also leads on rating (4.6 vs 4.0) and review sentiment (75% vs 53%). Note Lock ~ Keep your secret's advantage is ads (none vs shown). On 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

CostPrice · In-app purchases · Ads · Monetization

Calculator Lock is free to download; Note Lock ~ Keep your secret costs $1.99 up front. Note Lock ~ Keep your secret sells 10 in-app purchases, starting at $1.99 per month and Calculator Lock sells 7 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Calculator Lock holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: Calculator Lock has 6.5K ratings behind it against 153, so its average is the more settled of the two. Written reviews point the same way: 53% of Note Lock ~ Keep your secret's written reviews are positive against 75% of Calculator Lock's.

UpkeepUpdate frequency

Note Lock ~ Keep your secret ships an update every 2 months, Calculator Lock every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard7 real differences · 3 level
Note Lock ~ Keep your secret versus Calculator Lock: the parameters behind the verdict, then further details
ParameterNote Lock ~ Keep your secretCalculator Lock
Price$1.99Free — better
Rating4.0 (153 ratings)4.6 (6.5K ratings) — better
Positive reviews53.0% of reviews74.8% of reviews — better
Number of ratings1536.5K — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.013.0 — better
Further details — not scored
Size51 MB80 MB
Age rating4+17+
Developeri-App Creation Co., Ltd.ZipoApps

Customer experience

Note Lock ~ Keep your secret

All ratings153 ratings
Positive75.8%
Neutral2.6%
Negative21.6%
Written reviews149 reviews
Positive53.0%
Neutral12.8%
Negative34.2%

Calculator Lock

All ratings6,102 ratings
Positive88.7%
Neutral4.0%
Negative7.3%
Written reviews123 reviews
Positive74.8%
Neutral5.7%
Negative19.5%

User reviews

Note Lock ~ Keep your secret

From 153 App Store ratings

What we love

  • 🔒 Secure storage of private information
  • 👍 Easy to use and intuitive interface
  • 🚀 Quick access to notes
  • 💡 Innovative decoy mode to deter snooping

Room to improve

  • 🐛 Frequent crashes and freezing issues
  • 🔋 Concerns about data loss and lack of backup options
  • 👎 Subscription model and loss of functionality in free version
  • 🤯 Incompatibility with latest iOS versions

Calculator Lock

From 6.5K App Store ratings

What we love

  • 🔒 Hidden app
  • 👍 Good features
  • 👍 Simple and easy to use
  • 🔒 Secure vault for photos, videos, and passwords

Room to improve

  • 🐛 Buggy (doesn't save downloaded videos, can't paste in notes)
  • 🔍 App name not very discreet
  • 💸 Too much advertising

Bugs and requests

Note Lock ~ Keep your secret

Reported bugs

3 issues
  • App crashes when opening notes
  • Unable to rotate screen in landscape mode
  • Password reset and migration issues when switching devices

Requested features

4 requests
  • Search function to easily find notes
  • Ability to organize notes into folders
  • Syncing and backup options (e.g., iCloud)
  • Customization options for fonts, themes, and layouts

Calculator Lock

Reported bugs

4 issues
  • Doesn't save downloaded videos to gallery
  • Can't paste information in notes
  • Intruder selfie feature not working
  • App icon change not working

Requested features

3 requests
  • Ability to change app name
  • Sync between devices
  • Ability to paste information in notes

In-app purchases

10 purchases

Note Lock ~ Keep your secret

Subscriptions2
  • Note Lock PRO - Monthly3 Days trial$1.991 Month
  • Note Lock PRO - Yearly$9.991 Year
One-time8
  • Pro Fonts$1.99
  • Special Fonts$1.99
  • Unique Fonts 1$1.99
Show 5 more
  • Unique Fonts 3$1.99
  • Cute Fonts$1.99
  • Unique Fonts 2$1.99
  • Unlock All Fonts$6.99
  • Unlock All In-app$29.99
7 purchases

Calculator Lock

Subscriptions3
  • Calculator Lock Pro Weekly$1.997 Days
  • Hide Photos & Videos3 Days trial$4.991 Month
  • Calculator Lock Pro Yearly$14.991 Year
One-time4
  • Remove Ads$3.99
  • Calculator Lock (Remove Ads)$3.99
  • Calculator Lock Pro (Discount)$14.99
Show 1 more
  • Calculator Lock Pro (Lifetime)$29.99

Questions

Is Note Lock ~ Keep your secret free?
Note Lock ~ Keep your secret costs $1.99, and also offers in-app purchases.
Is Calculator Lock free?
Calculator Lock is free to download, with in-app purchases available.
Which has better reviews, Note Lock ~ Keep your secret or Calculator Lock?
Calculator Lock is rated higher. Note Lock ~ Keep your secret averages 4.0 out of 5 from 153 ratings, while Calculator Lock averages 4.6 from 6.5K ratings.
Do Note Lock ~ Keep your secret or Calculator Lock have ads?
Calculator Lock shows ads; Note Lock ~ Keep your secret does not.
Which is updated more often, Note Lock ~ Keep your secret or Calculator Lock?
Note Lock ~ Keep your secret ships an update every 2 months, and Calculator Lock every 2 weeks. Most recently, Note Lock ~ Keep your secret was updated on October 24, 2026 and Calculator Lock on October 25, 2026.

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