249+ iOS apps curated and reviewed
The best interest calculator apps on iPhone average 4.6★ across 249+ titles — we've ranked them by what real users actually keep on their phones. Updated October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.9★ (105K) | Yes | No | Oct 2026 | |
| 2 |  | Free | 4.6★ (78) | No | Yes | Sep 2026 | |
| 3 |  | Free | 4.8★ (6.5K) | Yes | Yes | Oct 2026 | |
| 4 |  | Free | — | No | No | Oct 2026 | |
| 5 |  | Free | 4.8★ (3.4K) | No | No | Oct 2026 | |
| 6 |  | Free | 4.6★ (23K) | Yes | Yes | Oct 2026 | |
| 7 |  | Free | — | Yes | Yes | May 2026 | |
| 8 |  | Free | 4.8★ (114) | Yes | Yes | Sep 2026 |
Easily calculate loan or mortgage payments. Simply input the loan amount, repayment term, and interest rate to get your estimated monthly payment.
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.
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.
