Best Calculator X Apps

248+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated September 2026

Looking for free calculator x apps? 20 of our 248+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Calculator X Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Calculator Lock - Secure VaultCalculator Lock - Secure VaultFree4.6★ (6.1K)YesYesSep 2026
2Graphing Calculator X84Graphing Calculator X84Free4.5★ (50K)YesYesSep 2026
3Calculator# Hide Photos VideosCalculator# Hide Photos VideosFree4.4★ (29K)NoYesSep 2026
4App Lock™ - Locked Apps VaultApp Lock™ - Locked Apps VaultFree4.5★ (2.6K)YesYesSep 2026
5CalcX Vault Secret Photo LockCalcX Vault Secret Photo LockFree4.5★ (202)YesYesSep 2026
6Calculator X: Math for iPadCalculator X: Math for iPadFree4.6★ (6.2K)YesYesSep 2026
7Basic Calculator+Basic Calculator+Free4.9★ (243K)YesNoSep 2026
8Safe: Secret Browser SecuritySafe: Secret Browser SecurityFree4.0★ (557)YesYesSep 2026

Top Picks for Calculator X

Calculator Lock - Secure Vault#1

Calculator Lock - Secure Vault by ZipoApps

Hide Photos, Private Photos
Editor's Choice
🔧 Utilities
4.6😊(6.1K ratings)
FreeAdsIn-App Purchases
Calculator Lock - Secure Vault screenshot 1
Calculator Lock - Secure Vault screenshot 2
Calculator Lock - Secure Vault screenshot 3
Calculator Lock - Secure Vault screenshot 4
Calculator Lock - Secure Vault screenshot 5
Calculator Lock - Secure Vault screenshot 6

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.

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
Graphing Calculator X84#2

Graphing Calculator X84 by Incpt.Mobis

Designed for use with Ti-84
Strong Contender
📚 Education
4.5😐(50K ratings)
FreeAdsIn-App Purchases
Graphing Calculator X84 screenshot 1
Graphing Calculator X84 screenshot 2
Graphing Calculator X84 screenshot 3
Graphing Calculator X84 screenshot 4
Graphing Calculator X84 screenshot 5
Graphing Calculator X84 screenshot 6

This app offers a free, powerful alternative to hardware graphing calculators. It supports basic to complex math, including graphing, statistics, and matrix operations, with a built-in user manual for assistance.

What We Love

  • 🚀 Exact replica of TI-84 calculator
  • 🤩 Great for school/college math
  • 👍 Convenient to have on phone
  • 💰 Cheaper than physical calculator

Room to Improve

  • 📺 Intrusive and frequent ads
  • 🔓 Key features locked behind paywall
  • 🛑 Restricted functionality compared to physical TI-84
  • 🤯 Ads disrupt focus during timed tests
Calculator# Hide Photos Videos#3

Calculator# Hide Photos Videos by NewSoftwares.net

Hide Photos, Videos & Secrets
Worth Considering
🔧 Utilities
4.4😞(29K ratings)
FreeIn-App Purchases
Calculator# Hide Photos Videos screenshot 1
Calculator# Hide Photos Videos screenshot 2
Calculator# Hide Photos Videos screenshot 3
Calculator# Hide Photos Videos screenshot 4
Calculator# Hide Photos Videos screenshot 5
Calculator# Hide Photos Videos screenshot 6

This app disguises itself as a calculator to secretly store photos, videos, documents, notes, passwords, and more. It offers robust security features to protect your confidential information from prying eyes and hackers.

What We Love

  • 🔒 Discreet and easy to use
  • 👍 No storage restrictions in free version
  • 🚀 Occasional short ads are a small price to pay
  • 🔒 Multilayered security options (pattern, PIN, biometrics)
  • 👍 Fake error message on startup

Room to Improve

  • 🐛 Password recovery issues
  • 🐛 Unreliable file storage and retrieval
  • 🐛 Subscription issues, unable to access premium features
  • 🐛 Sudden app crashes and data loss
  • 🐛 Extremely loud video playback volume
  • 🐛 Inability to move/delete stored items

More Calculator X apps to explore

FAQ about Calculator X

What are the best calculator x apps for iPhone?
Calculator Lock - Secure Vault tops our calculator x apps ranking as of September 2026, with a 4.6-star average from 6.1K App Store ratings, and it's free to download.
Yes — 20 of the top calculator x apps we rank are free to download, including Calculator Lock - Secure Vault and Graphing Calculator X84.
Calculator Lock - Secure Vault shows ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 248+ calculator x apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Calculator Lock is a privacy app that allows you to hide your private photos, videos, contacts, and passwords. It functions as a secret vault disguised as a calculator, ensuring your sensitive data is protected from unauthorized access. You can manage, view, and restore your hidden media within the app.
To access your hidden files, you must enter the correct password or PIN through the calculator interface. Once authenticated, the app will reveal its secret vault features, allowing you to view and manage your locked photos, videos, contacts, and passwords.

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