187+ iOS apps curated and reviewed
The best calculateretro apps on iPhone average 4.4★ across 187+ titles — we've ranked them by what real users actually keep on their phones. Updated July 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | $1.99 | 5.0★ (1) | No | No | Jul 2026 |
| 2 |  | Free | 4.7★ (15K) | No | Yes | Aug 2026 |
| 3 |  | Free | 4.8★ (21K) | Yes | No | Aug 2026 |
| 4 |  | Free | 4.4★ (51) | Yes | No | Aug 2026 |
| 5 |  | Free | 4.8★ (83) | Yes | No | Jul 2026 |
| 6 |  | Free | 4.8★ (3.2K) | Yes | Yes | Aug 2026 |
| 7 |  | $9.99 | 4.7★ (770) | No | Yes | Aug 2026 |
| 8 |  | $2.99 | 4.5★ (29) | No | No | Aug 2026 |
This app allows users to track all their calculations with features like a backspace key, history printing, and PDF export. It supports Apple Watch, dark mode, and customization of display and fonts. Calculations can be shared via email or saved for later access.
This app offers a comprehensive suite of over 40 financial and utility calculators. Easily handle complex calculations like investment analysis, tax percentages, profit margins, and everyday percentage needs with a clean and intuitive interface.
This app provides 15 calculators for estimating concrete, blocks, mortar, rebar, and gravel. It supports various shapes and units, offering material cost estimations for construction projects.
Access a comprehensive suite of financial tools for personal and business use. Calculate loans, mortgages, investments, retirement savings, and more with ease. This app offers a wide range of specialized calculators for detailed financial analysis.
Easily calculate sales tax and IVU for Puerto Rico, or any other tax rate, before making a purchase. This free, user-friendly tool also functions as a full arithmetic calculator and can incorporate discounts into your total price calculations.
A free, classic calculator app with large, easy-to-press buttons and customizable skins. It supports basic arithmetic, memory functions, and can handle very large numbers without using scientific notation. Multitasking is also supported on compatible devices.
A powerful calculator designed for professionals and students, offering advanced features like RPN mode, multi-line display, and extensive unit conversions. It supports various number systems and includes an Apple Watch app for on-the-go calculations.
This app offers a versatile calculator with multiple modes, including scientific, bitwise, statistical, trigonometric, base conversion, and time calculations. It features a simple mode with large buttons and customizable interface. Widgets for notification center and Apple Watch are also included.
This app is a specialized calculator for construction professionals, offering advanced functions for carpentry and building tasks. It supports various dimensional formats and provides instant help with videos and diagrams.
Calculate monthly payments for mortgages, car loans, credit cards, and more. Easily add adjustments like insurance and property taxes to see their impact. Save and email loan details with amortization schedules.
Calculate monthly loan payments for mortgages, auto loans, and credit cards. Simulate "what if" scenarios to see how extra payments save you money and pay off loans faster. Track all extra payments and view detailed amortization schedules.
This intuitive app offers a powerful and accurate financial calculator for various calculations. It handles time value of money, growing annuities, bond valuation, cash flow analysis, investment analysis (IRR/NPV), and loan amortization. RPN support and near-instantaneous results are also included.
This app emulates a professional financial calculator, offering identical capabilities and operation sequences to its hardware counterpart. It provides advanced financial calculations, including time value of money, cash flow analysis, and bond yields, with an intuitive user experience.
This app accurately calculates time-related tasks, including working hours, durations between dates, and age. It offers a user-friendly interface with dark mode and offline functionality, allowing for easy time management for work and personal life.
This app offers a comprehensive suite of 12 calculators, including scientific, currency, unit, and finance functions. It features advanced modes, extensive formula support, and a user-friendly interface for all calculation needs.
Calculate installment loans with various repayment methods. This tool helps you determine monthly payments, principal, interest, and remaining balance for different loan scenarios.
This app offers the functionality of the industry-standard HP 12c Platinum Financial Calculator on your iPhone or iPod touch. It supports both RPN and algebraic data entry, with editing features like backspace and undo. Perform complex financial calculations for real estate, banking, and more.
This app emulates a classic RPN scientific calculator, offering advanced features like complex number arithmetic, matrix calculations, and programmability. It provides a functional and complex tool reminiscent of 1980s calculators.
Calculate percentage changes quickly and easily. This tool helps determine starting values, percentages, differences, or end values for various scenarios like salary increases or sale promotions.
This app brings the powerful HP48 calculator experience to your mobile device. It offers enhanced performance, seamless file management, and a customizable interface with support for various HP calculator models. Enjoy a familiar and convenient calculator solution without needing extra hardware.