Comparison

Calculator 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

Calculator

This app offers both basic and scientific calculators for quick solutions to mathematical expressions. It also features a "Math Notes" function that allows users to type or write out equations and see them solved inline, with support for variables and graphing.

Highlights
  • Basic and scientific calculators
  • Type or write math expressions
  • Inline equation solving
  • Variable creation and use
  • Equation graphing
  • Unit and currency conversion
  • Calculation history
Features
Read full description

Calculator Easily type out math with the basic and scientific calculators for quick solutions. With the Math Notes calculator, solving expressions, creating and using variables, and even plotting equations on graphs is as simple as typing or writing them out. Basic & Scientific Calculators Type complete expressions with parentheses, and basic and scientific operations before hitting equal for the final answer. With history, you can keep track of previous calculations, and easily copy or switch back to previous results. Unit Conversion Unit conversions in the basic and scientific calculators help you quickly convert between hundreds of units including length, speed, temperature, weight and more. You can even get up-to-date conversions for currencies from around the world. Math Notes Type math or write it out using Apple Pencil on iPad, and Math Notes will solve your expressions inline as soon as you add an equal sign. Math Notes supports all the same functions as the basic and scientific calculators, unit conversions and even math written vertically. Variables Create variables by typing or writing their name, an equals sign and then their value. Name them with letters or words. Tap on a variable’s value to easily adjust the value up or down. And use your variables in expressions, and even graphed equations across a Math Note. Graphing Type or write an equation, and with a tap you can graph it in Math Notes. Zoom, pan around, or resize your graph to get it just right. You can even add multiple equations on the same graph to see how they’re related.

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

Calculator3 screens
Calculator Lock4 screens

Verdict

The call

The clearest difference is rating: Calculator Lock at 4.6 against Calculator's 3.0. Calculator Lock also leads on review sentiment (76% vs 38%) and update cadence (every 2 weeks vs every 4 months). Calculator's advantage is in-app purchases (none vs 7) and ads (none vs shown). On price, ratings volume 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

Both are free to download. Calculator Lock sells 7 in-app purchases, starting at $1.99 per 7 days. Calculator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Calculator Lock holds the better App Store score, 4.6 against 3.0. Both are backed by a comparable volume of ratings — 9.8K and 6.1K respectively. Written reviews point the same way: 38% of Calculator's written reviews are positive against 76% of Calculator Lock's.

UpkeepUpdate frequency

Calculator ships an update every 4 months, Calculator Lock every 2 weeks. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

Scorecard7 real differences · 3 level
Calculator versus Calculator Lock: the parameters behind the verdict, then further details
ParameterCalculatorCalculator Lock
PriceFreeFree
Rating3.0 (9.8K ratings)4.6 (6.1K ratings) — better
Positive reviews37.8% of reviews75.7% of reviews — better
Number of ratings9.8K — better6.1K
Update frequencyEvery 4 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS10.0 — better13.0
Further details — not scored
Size17 MB80 MB
Age rating4+17+
DeveloperAppleZipoApps

Customer experience

Calculator

All ratings9,810 ratings
Positive47.8%
Neutral6.8%
Negative45.4%
Written reviews1,253 reviews
Positive37.8%
Neutral10.3%
Negative51.9%

Calculator Lock

All ratings6,102 ratings
Positive88.7%
Neutral4.0%
Negative7.3%
Written reviews115 reviews
Positive75.7%
Neutral6.1%
Negative18.3%

User reviews

Calculator

From 9.8K App Store ratings

What we love

  • 👍 Basic calculator functionality
  • 💡 Math notes feature
  • 🚀 Clean, simple design

Room to improve

  • 🐛 Calculation errors
  • 🔍 Lack of history/memory functions
  • 🤔 Inconvenient to access advanced features
  • 🤯 Frustrating to fix mistakes
  • 🙄 Removed useful features in recent updates

Calculator Lock

From 6.1K 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

Calculator

Reported bugs

3 issues
  • Calculator disappearing from home screen
  • Incorrect calculation results
  • Inconsistent behavior with parentheses and scientific functions

Requested features

5 requests
  • Restore ability to repeat calculations with '='
  • Add 'clear' button
  • Show full calculation history
  • Improve usability for advanced math
  • Bring calculator to iPad

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

None

Calculator

No in-app purchases

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 Calculator free?
Calculator is free to download, with no in-app purchases.
Is Calculator Lock free?
Calculator Lock is free to download, with in-app purchases available.
Which has better reviews, Calculator or Calculator Lock?
Calculator Lock is rated higher. Calculator averages 3.0 out of 5 from 9.8K ratings, while Calculator Lock averages 4.6 from 6.1K ratings.
Do Calculator or Calculator Lock have ads?
Calculator Lock shows ads; Calculator does not.
Which is updated more often, Calculator or Calculator Lock?
Calculator ships an update every 4 months, and Calculator Lock every 2 weeks. Most recently, Calculator was updated on September 24, 2026 and Calculator Lock on September 23, 2026.

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