Compound Interest, FIRE, Loan
Savings, Deposit & Inflation
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Compound interest, loans, deposits, retirement and inflation, with after-tax and after-inflation results. Six calculators, one precise engine.
Stop guessing what your money does over time. Calculate it.
Compound interest, loan instalments, term deposits, early retirement and inflation — six calculators in one app, all on the same engine.
• Compound interest — regular contributions, any compounding frequency, after-tax return
• Loan & instalment — full amortisation schedule, total interest, early payoff scenario
• Term deposit — day-count terms, net yield after withholding bands
• FIRE — your retirement number and horizon, in today's money
• Inflation — purchasing power and real return
• Goal seek — answers "how much per month to reach this amount?"
Tax rules for Turkey, Germany, Spain and Brazil are built in. Currency and number formats follow your device region.
The arithmetic holds to the cent: money is computed in decimal, never floating point, and an amortisation schedule closes at exactly zero.
FREE
All six calculators, unlimited. Save three calculations.
PRO
• Unlimited saved calculations
• Compare scenarios side by side
• Export to CSV and PDF
Pro is weekly, monthly or yearly. Monthly and yearly start with free 3 days.
Terms of Use (EULA)
This app is licensed under Apple's Standard End User License Agreement, and those terms cover the service it provides in addition to the app:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• On Loan & instalments, Deposit & term accounts, Retirement & FIRE and Solve for a goal, changing a value didn't update the result. Results now update as you type, and the advanced options in Solve for a goal open.
• Numbers are now read the way your device writes them: type "2,5" on a German or Turkish iPhone and it counts as 2.5. A value that can't be read is no longer silently treated as zero; the field says "Enter a valid number."
• The tax band is now always chosen by calendar days, so the right band applies under 360-day and business-day (252) conventions too.
• "Solve for a goal" now uses the advanced options as well: annual contribution increase, contribution timing, compounding and day-count convention.
• Large results are sized to fit the screen, with every digit visible.
This version requires iOS 26 or later.
The developer, BULENT TEKBAS, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- BULENT TEKBAS
- Size
- 9.3 MB
- Category
- Finance
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
English and 4 more
- English, German, Portuguese, Spanish, Turkish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Pro Monthly $4.99
- Pro Weekly $1.99
- Pro Yearly $34.99
- Copyright
- © Octo8