The Giant Calculator

Mortgage Payment Calculator

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

The Giant Calculator is a bank-grade mortgage tool that goes far beyond a simple payment estimate. Whether you're a first-time buyer trying to understand the numbers, a repeat buyer weighing your options, or a real estate pro who needs professional-grade estimates, it gives you full transparency into the true cost of a home loan. ADVANCED LOAN MATH • Conventional, FHA, VA, and Jumbo loan support • FHA: automatic Upfront MIP (UFMIP) and annual MIP with life-of-loan logic • VA: funding fee based on down payment and use status • Conventional: dynamic PMI that automatically drops off as you build equity • Interest-only payment support REGULATORY-STYLE LOAN ESTIMATE • A clear breakdown modeled on the official Loan Estimate format • Estimates origination charges, services, prepaids, and escrows • APR calculated with high-precision math • Built-in glossary explaining terms like escrow, APR, and PMI in plain language • Export a clean PDF to share or print SAVE & COMPARE SCENARIOS • Save loan setups with custom names • Compare scenarios side by side • Best-value indicators highlight the lowest-cost option • Reload any saved scenario to tweak it instantly VISUALIZE EVERYTHING • Donut chart breaking down your monthly payment (P&I, taxes, insurance, PMI, HOA) • Detailed amortization schedule, principal vs. interest over time • Equity graph showing your balance paid down year by year BUILT FOR EVERYONE • Full screen reader support and high-contrast labels • Haptic feedback and smooth, responsive controls • Clean design that's easy to read at a glance No accounts. No ads. Just clear, honest mortgage numbers. The Giant Calculator is a bank-grade mortgage tool that goes far beyond a simple payment estimate. Whether you're a first-time buyer trying to understand the numbers, a repeat buyer weighing your options, or a real estate pro who needs professional-grade estimates, it gives you full transparency into the true cost of a home loan. ADVANCED LOAN MATH • Conventional, FHA, VA, and Jumbo loan support • FHA: automatic Upfront MIP (UFMIP) and annual MIP with life-of-loan logic • VA: funding fee based on down payment and use status • Conventional: dynamic PMI that automatically drops off as you build equity • Interest-only payment support REGULATORY-STYLE LOAN ESTIMATE • A clear breakdown modeled on the official Loan Estimate format • Estimates origination charges, services, prepaids, and escrows • APR calculated with high-precision math • Built-in glossary explaining terms like escrow, APR, and PMI in plain language • Export a clean PDF to share or print SAVE & COMPARE SCENARIOS • Save loan setups with custom names • Compare scenarios side by side • Best-value indicators highlight the lowest-cost option • Reload any saved scenario to tweak it instantly VISUALIZE EVERYTHING • Donut chart breaking down your monthly payment (P&I, taxes, insurance, PMI, HOA) • Detailed amortization schedule, principal vs. interest over time • Equity graph showing your balance paid down year by year BUILT FOR EVERYONE • Full screen reader support and high-contrast labels • Haptic feedback and smooth, responsive controls • Clean design that's easy to read at a glance No accounts. No ads. Just clear, honest mortgage numbers.

Ratings & Reviews

  • 5.0
    out of 5
    2 Ratings

This update improves number entry throughout the app: the on-screen keyboard no longer covers the field you're typing in, and a Done button lets you dismiss it easily. Sharing a scenario now sends a clean payment quote. Includes minor stability improvements.

Version 1.1.2

The developer, Armond Ohan, 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
    • Armond Ohan
    Size
    • 42.8 MB
    Category
    • Finance
    Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 7MTG
  • Developer Website
  • Privacy Policy

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