222+ iOS apps curated and reviewed
The best simple interest calculator apps on iPhone average 4.6★ across 222+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.
Easily calculate loan or mortgage payments. Simply input the loan amount, repayment term, and interest rate to get your estimated monthly payment.
This tool quickly and accurately calculates simple interest based on amount, interest rate, and duration. It supports calculations for monthly or yearly rates and can determine interest between specific dates or for a given period in years, months, or days.
This app helps you understand the true cost of loans and mortgages by revealing total interest paid and payoff timelines. It allows for scenario comparisons, extra payment analysis, and detailed amortization schedules. Visualize your debt journey with graphs and access bonus calculators.
This app simplifies financial planning by providing quick and accurate calculations for both simple and compound interest. It offers an intuitive interface, customizable parameters, and dual display modes for numerical and graphical results. Track your financial progress and learn the fundamentals of interest calculation.
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.
Easily calculate compound and simple interest on various investments like FDs, CDs, and RDs. Project future investment values and analyze returns with a user-friendly interface for global users.
Calculate the growth of savings and investments using compound interest. Explore how regular contributions and withdrawals impact your financial goals over time. Designed for anyone to understand and utilize the power of compounding for wealth building.
This app helps users calculate interest on savings and deposits. It offers options for isolated and compounded monthly calculations, allowing users to determine maturity amounts for lump sum or monthly deposits to reach financial targets.
This app helps you manage your loans and finances by calculating EMIs, comparing loan options, and providing detailed repayment schedules. It also includes calculators for investments, currency, and GST, allowing for informed financial planning.
Plan your financial future with a powerful compound interest calculator. It helps you visualize investment growth with periodic contributions and plan retirement withdrawals with inflation adjustments. Offers detailed breakdowns and interactive charts for informed financial decisions.
This app simulates investment growth year by year, helping you visualize your savings progress. It calculates the time to reach financial goals, required contributions, and simple interest, with detailed charts for insights.
Calculate installment loans with various repayment methods. This tool helps you determine monthly payments, principal, interest, and remaining balance for different loan scenarios.
This finance app helps users quickly calculate simple and compound interest. It also provides a feature to determine the difference between two dates. Designed for ease of use, it offers straightforward financial calculations.
Calculate and plan your investments to achieve financial independence and early retirement. Understand the power of earning interest on your interest with detailed projections and visualizations. Start snowballing your money today for a wealthier future.
This app offers a straightforward calculation experience, focusing on essential functions without unnecessary complexity. It includes basic arithmetic, percentage calculations, and advanced functions like square root. Users can customize the appearance with multiple color schemes and utilize features like result copying and split-screen multitasking on iPad.
Estimate your monthly mortgage payment with detailed breakdowns including principal, interest, taxes, insurance, and HOA fees. Generate amortization schedules and compare different loan scenarios to make informed home-buying decisions.
Estimate monthly loan payments and visualize repayment schedules with detailed amortization charts. Input loan amount, interest rate, and term to see monthly payments, total interest, and total repayment. Offers both annual and monthly breakdowns for clear financial planning.
