CalcKit: All-in-One Calculator

Money, Health & GPA Calculator

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

33 calculators in one fast, private app. Mortgage, take-home pay, sales tax, BMI, macros, GPA and more — with US and Canada rules built in. Works fully offline. CalcKit is 33 calculators in one clean, fast app — the money, health, school, and everyday math you actually run, without the ads-first clutter or the spreadsheet. Every calculator is built for real decisions: enter your numbers, see the answer instantly, and get the supporting detail — charts, breakdowns, and full amortization tables — right underneath. BUILT FOR THE US AND CANADA Most calculators guess at your country. CalcKit asks once and then gets it right: • Take-home pay with federal and state or provincial brackets • Sales tax that knows GST, HST, and PST — not just a flat rate • Retirement savings modeled as 401(k)/IRA or RRSP/TFSA • Closing costs including land transfer tax • Imperial or metric units, set to match your region FINANCE & TAX (15) Mortgage Payment • Take-Home Pay • Sales Tax • Loan Payoff • Compound Interest • Retirement Savings • Savings Goal • Rent vs Buy • Currency Converter • Tip Calculator • Profit Margin • ROI • CAGR • APR • Commission REAL ESTATE (5) Cap Rate • Cash-on-Cash Return • Rental Yield • Closing Costs • Amortization Schedule HEALTH & FITNESS (5) BMI • TDEE / Calories • Macro Calculator • Body Fat % (Navy method) • Water Intake STUDENT (3) GPA Calculator • Final Exam Grade • Student Loan EVERYDAY (5) Percentage • Discount • Unit Converter • Unit Price • Age Calculator DESIGNED TO BE FAST • Favorites — pin the calculators you use weekly to the top • History — every calculation saved automatically, ready to reopen • Charts and tables that make long-term numbers make sense • Light and dark themes that follow your system setting • Seven languages: English, Español, Français, 简体中文, 繁體中文, 日本語, 한국어 PRIVATE BY DESIGN CalcKit works entirely offline. There is no account, no sign-up, and no server — your salary, your mortgage, and your health numbers stay on your device and are never uploaded anywhere. CALCKIT PRO A single one-time purchase — no subscription: • Remove banner ads • Extended history: 100 calculations instead of 20 • Unlimited saved calculations instead of 5 Note: the currency converter uses built-in offline reference rates for eight major currencies and is intended for quick estimates, not for trading or settlement. Questions or a calculator you want added? Get in touch — CalcKit is actively developed and the list keeps growing.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

The developer, Gang Chen, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Gang Chen
    Size
    5.3 MB
    Category
    Utilities
    Compatibility
    Requires iOS 18.6 or later.
    • iPhone
      Requires iOS 18.6 or later.
    • iPad
      Requires iPadOS 18.6 or later.
    • Mac
      Requires macOS 15.6 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 2.6 or later.
    Languages
    English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 Gang
  • Privacy Policy

    • More by Gang Chen

    You Might Also Like