245+ iOS apps curated and reviewed
If you already know ciTBI Calc, this is the deeper bench. 245+ citbi calc apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | No | May 2026 |
| 2 |  | Free | 3.9★ (28) | No | Yes | Aug 2026 |
| 3 |  | Free | 4.7★ (845) | No | Yes | Aug 2026 |
| 4 |  | Free | 4.8★ (3.3K) | Yes | No | Aug 2026 |
| 5 |  | $3.99 | 4.9★ (205) | Yes | No | Aug 2026 |
| 6 |  | Free | — | Yes | No | Aug 2026 |
| 7 |  | Free | 4.8★ (371) | Yes | No | Aug 2026 |
| 8 |  | Free | — | No | No | Aug 2026 |
A visually appealing and straightforward calculator app for iPhone and iPad. It offers a unique user interface with support for basic and scientific calculations, various number base conversions, and currency and unit conversions.
This application serves as a versatile calculator designed for programmers. It supports conversions and calculations across binary, decimal, and hexadecimal number systems.
Emulates the TI BAII Plus financial calculator, offering identical functionality with a clean and user-friendly interface. It's designed for finance professionals and students preparing for exams like CFA, FRM, and CPA.
This calculator app offers essential functions plus advanced features like sales tax and discount calculations. Easily reuse past answers, edit expressions with cursor keys, and customize themes and fonts. Share your calculations with others.
This app offers a versatile calculator for everyday tasks, supporting calculations in binary, octal, decimal, and hexadecimal. It allows for complex expressions with parentheses, editing of inputs, and displays both the expression and answer on separate lines. It also handles time calculations and large numbers up to 16 significant digits.
Easily calculate various financial percentages including taxes, profit margins, discounts, and compound growth. This app offers a simple interface for quick and accurate results, supporting both online and offline calculations.
Manage your finances on the go with this banking app. Easily check accounts, make payments, transfer funds, and deposit checks. Securely sign in and find nearby branches or ATMs. Apply for new accounts and loans, or manage your cards.
This app helps you decipher complex family trees and identify the correct terms for relatives. It simplifies understanding familial connections, especially during holidays or when addressing new family members after marriage. Get clear answers to your tricky relationship questions.
This app offers a comprehensive calculator with standard arithmetic functions, business-specific calculations like GST, and advanced features. Enjoy a realistic calculator experience with tactile feedback and a clean interface.
This advanced scientific and financial calculator utilizes the Reverse Polish Notation (RPN) system. It offers over 96 functions, catering to professionals with features for finance, programming, and general scientific calculations. Optimized for iOS devices, it provides a robust and accurate computational experience.
This app emulates a popular financial calculator, offering over 120 functions for business, finance, and statistics. It simplifies complex calculations like loan payments, investment values, and cash flow analysis with intuitive worksheets and a user-friendly interface.
This specialized calculator is designed exclusively for union members of the International Training Institute. It replicates the functionality of a handheld calculator, providing essential tools for its intended user base.
This app offers a comprehensive suite of over 40 calculators and unit converters for various needs, including finance, health, construction, and everyday math. It features standard, scientific, and specialized calculators for tasks like loan amortization, currency conversion, and material estimation.
This app stores and syncs your calculation histories across all your devices using cloud storage. It's useful for everyday calculations, invoicing, and tax preparation, with options to edit, comment, and export your tapes.
Estimate your net pay with detailed breakdowns of income, taxes, and deductions. Plan for retirement, optimize your tax strategy, and compare job offers with multi-year projections and personalized insights. Supports all 50 states and multiple income sources.
This app offers ten powerful calculators, including scientific, graphing, and financial tools, along with numerous worksheets and conversion options. It's designed to handle complex calculations, currency conversions, and financial planning with advanced features and customizable displays.