Comparison

Calculator Lock vs IntervalMate

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

Head to head
About

Calculator Lock

Features
Read full description

Calculator Lock – Secret Vault: Hide Photos, Videos & Files Keep your private photos, videos, and files safe inside a secure Calculator Vault disguised as a simple calculator. With Calculator Lock – Secret Vault, you can easily hide photos, videos, passwords, notes, and contacts behind a smart and secure PIN-protected calculator screen. No one will ever know that this photo hider app is your private photo vault. Perfect for protecting your personal gallery from snoopers and ensuring your privacy at all times. - Top Features of Calculator Lock – Secret Vault : Hide Photos & Images : Securely hide pictures and lock private photos in a secret gallery vault. Hidden photos are completely removed from your phone’s gallery and can only be accessed inside the Secret Calculator Vault with your password. Hide Videos & Media Files : Keep your private videos safe in the video locker. Watch hidden videos directly inside the app with the built-in video player — no need to unhide or move them. Perfect for video lock and private movie storage. Lock Files & Manage Secure Data : Store and organize your private files, notes, and folders securely inside the secret vault app. You can even create and hide contacts, personal notes, and more inside the calculator vault. Password Manager : Use My Password Manager to safely store all your sensitive passwords, credit card details, or personal information in an encrypted and password-protected space. Intruder Selfie : Your privacy deserves protection. The app automatically captures an intruder selfie whenever someone tries to open your vault with a wrong password. Get notified of unauthorized access instantly. Disguise Mode : The Disguise Mode feature allows you to change the app icon to something discreet — keeping your hidden gallery truly invisible and private. Secret Calculator Interface : Disguised as a simple calculator app, the vault opens only when you enter your secret PIN. No one will suspect that your calculator hides a photo vault and video locker. Multiple Lock Options : Choose between PIN lock, pattern lock, or fingerprint unlock for extra convenience and security. Private Browser : Browse privately with the inbuilt secure browser that doesn’t store history or cookies — ideal for safe and private web sessions. Easy Restore & Backup : Easily restore your hidden media files whenever you want. Export your secret photos, videos, or notes safely back to your phone’s gallery. - Why Choose Calculator Lock – Secret Vault * Best photo vault app for iPhone users * Simple and clean calculator disguise for privacy protection * Built-in photo viewer and video player for instant access * Perfect for photo hider, video lock, and secure file manager needs * Reliable intruder alert and data encryption for complete security - Protect Your Private Life Today Keep your private gallery, hidden videos, and confidential notes secure with Calculator Lock – Secret Vault — the ultimate photo hiding app for iPhone. Stay safe, stay private, and keep your secrets locked behind the smartest calculator lock app available. # Subscription Details # • Weekly, monthly and annual subscriptions are available. • Payment will be charged to your iTunes account at confirmation of purchase. • Your subscription will automatically renew unless auto-renew is disabled at least 24 hours before the end of the current subscription period. • Automatic renewals will be charged at the same price you were originally charged for the subscription. • Subscriptions can be managed by going to Account Settings on the App Store after purchase. Privacy policy: https://calculatorlockvaultapp.blogspot.com/2025/10/calculator-lock-privacy-policy.html Terms of Use: https://calculatorlockvaultapp.blogspot.com/2025/10/calculator-lock-terms-of-use.html

About

IntervalMate

Features
Read full description

Create your own interval routines and focus on your workout. IntervalMate is a simple and intuitive interval timer app. Build custom workout routines and follow the timer through your workout and rest periods. ▸ Custom Routines Combine warmup, workout, rest, and cooldown intervals freely. Set duration and rounds exactly how you want. ▸ Ready-to-Use Templates Get started quickly with Tabata, HIIT, Plank Challenge, Running Intervals, Stretching, and more. ▸ Favorites Add your most-used routines to favorites for quick access. ▸ Apple Watch Integration View your timer in real-time on Apple Watch. Run timers independently on Watch too. ▸ Dynamic Island & Live Activity Track your timer on Dynamic Island and Lock Screen even outside the app. ▸ Background Execution Timer keeps running while using other apps or when screen is off. ▸ Complete Privacy All data stays on your device. No account required, no internet needed. Perfect for: • Home workouts • Tabata & HIIT training • Plank & stretching timing • Run/walk intervals Start more efficient workouts with IntervalMate today.

Screenshots

Calculator Lock4 screens
IntervalMate4 screens

Verdict

The call

The clearest difference is in-app purchases: IntervalMate at none against Calculator Lock's 2. IntervalMate also leads on update cadence (every 2 days vs monthly). On price, ads, device support and iOS requirement 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 2 in-app purchases, starting at $2.99 per 7 days. IntervalMate asks for nothing beyond the download.

UpkeepUpdate frequency

Calculator Lock ships an update monthly, IntervalMate every 2 days. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.

Scorecard2 real differences · 4 level
Calculator Lock versus IntervalMate: the parameters behind the verdict, then further details
ParameterCalculator LockIntervalMate
PriceFreeFree
Update frequencyMonthlyEvery 2 days — better
AdsYesYes
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS18.2 — better18.4
Further details — not scored
Size6 MB21 MB
Age rating4+4+
DeveloperPratik KadamMijin Kim

In-app purchases

2 purchases

Calculator Lock

Subscriptions2
  • Calculator Lock Pro - Weekly$2.997 Days
  • Calculator Lock Pro - Yearly$29.991 Year
None

IntervalMate

No in-app purchases

Questions

Is Calculator Lock free?
Calculator Lock is free to download, with in-app purchases available.
Is IntervalMate free?
IntervalMate is free to download, with no in-app purchases.
Do Calculator Lock or IntervalMate have ads?
Both Calculator Lock and IntervalMate show ads.
Which is updated more often, Calculator Lock or IntervalMate?
Calculator Lock ships an update monthly, and IntervalMate every 2 days. Most recently, Calculator Lock was updated on October 6, 2026 and IntervalMate on October 10, 2026.

Other comparisons