# Calculator Plus - All-in-One — Currency, Units & Finance > Currency, Units & Finance (iPhone/iPad app by Hieu Dao.) - Source: https://appshunter.io/ios/app/calculator-plus-all-in-one/id6758776243 (this page in markdown: same URL + `.md`) - Developer: [Hieu Dao](https://appshunter.io/developer/1873849632) - Category: Utilities, Finance - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 15.0 · 35 MB - Languages: American English, Vietnamese - Released: 2026-02-22 - Data updated: 2026-08-21 - User reviews in markdown: https://appshunter.io/ios/app/calculator-plus-all-in-one/id6758776243/reviews.md ## What is Calculator Plus? Every tool unlocked. No paywall on any calculator. Solve equations step by step, work with matrices, take derivatives and integrals, and look up any of 118 elements - all offline, all free. WHAT MAKES IT DIFFERENT Step-by-step solutions See how the answer was reached, not just the result. Linear, quadratic and cubic equations, plus 2-variable systems. Formula library - 33 formulas Physics, chemistry and math. Fill in the values you know and the app solves for whichever one is missing. Newton's second law, Ohm's law, molarity, dilution, law of cosines, compound interest and more. Periodic table - 118 elements Atomic mass, electron configuration, electronegativity, period and group. Grid view or list view, with search. Matrices up to 6x6 Determinant, inverse, transpose, rank, and solving linear systems. Calculus Symbolic derivatives and definite integrals, with a graph view. Programmer mode Binary, octal, decimal and hex. Bitwise operations, 8 to 64 bit widths. Complex numbers and vectors Polar form, nth roots, dot and cross products, angle between vectors. Statistics and graphing Mean, median, mode, standard deviation, variance. Plot multiple functions at once. EVERYDAY TOOLS Currency and crypto conversion with live rates. Loan and savings interest with a full amortization schedule. Tax, tip, discount, BMI, GPA, fuel cost, unit price comparison, electricity bill. Length, area, speed, temperature and clothing size conversion. Fractions, percentages, date difference, geometry, bubble level. BUILT TO BE PLEASANT - Works fully offline, except live exchange rates - 11 languages - Calculation history with timestamps, tap any entry to reuse it - Tap anywhere in the expression to edit that exact digit - Landscape mode on the main calculator - Search box and favorites in the tool drawer Premium removes ads and unlocks extra color themes. Everything else is free, permanently. Privacy Policy: https://docs.google.com/document/d/14VwVQjYjk5p4P5gF3xpzjBEqdZWupXMi19D-FuSFS34/edit?usp=sharing Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Gỡ quảng cáo vĩnh viễn | $2.99 | one-time | ## Version history (last 5 releases) ### 2.1.0 — 2026-08-15 NEW - Formula library 33 formulas across physics, chemistry and math. Fill in what you know and the app solves for the missing value. Includes Newton's second law, Ohm's law, molarity, dilution, law of cosines and compound interest. NEW - Periodic table All 118 elements with atomic mass, electron configuration and electronegativity. Grid or list view, with search. NEW - Everything unlocked Matrices, calculus, complex numbers, vectors, currency conversion, interest and tax calculators are now free for everyone. Premium is only about removing ads and extra themes. NEW - Find tools faster Search box in the tool drawer, and you can now star the tools you use most. Formulas and the periodic table are also one tap away from the main calculator. IMPROVED - Calculation history now shows the date and time of each entry - Landscape layout on the main calculator has been rebuilt - Currency, interest and unit converters remember your last selection - Tap directly on a digit in the expression to edit it FIXED - nCr and nPr returned the wrong value - The percent key behaved as a remainder operator - Pressing an operator then equals could return 0 - sin(180 degrees) showed a tiny number instead of 0 - Several formula results could not be solved in reverse ### 2.0.1 — 2026-08-10 Complete Multilingual Support Every screen is now fully translated into 11 languages: English, Vietnamese, Japanese, Korean, German, French, Spanish, Portuguese, Hindi, Indonesian, and Arabic. Previously some tools still showed English regardless of your language setting. Arabic now displays with proper right-to-left layout. Refreshed App Icon New icon with balanced spacing and improved legibility at small sizes. Layout Fixes Content no longer overlaps the home indicator or gesture bar. Buttons at the bottom of every tool screen are now fully reachable. Smarter Input Handling - Tip calculator no longer breaks when the number of people is left empty - Percentage tools return no result instead of infinity when dividing by zero - Discount calculator now rejects negative percentages that previously increased the price - BMI calculator handles invalid height and weight safely Privacy Controls Added a privacy settings option so you can review or change your ad personalization preferences at any time. Find it under Settings. Other Improvements - Date calculator now shows weekday and date formats correctly in every language - Electricity bill tiers display in your chosen language - Various performance and stability improvements This version requires iOS 15 or later. ### 2.0.0 — 2026-06-29 Full Multilingual Support (English and Vietnamese) All screens - including Function Graph, Equation Solver, Statistics, and Constants Panel - are now fully localized. Switch languages instantly in Settings. Landscape Scientific Mode Rotate your phone to unlock an expanded scientific keyboard with sin, cos, tan, log, ln, powers, roots, and more. Haptic Feedback Every button tap now responds with a precise haptic pulse for a more tactile experience. Scrollable Calculation History The history panel now shows full expression and result for every past calculation for easy review. Constants Panel Tap any physics or math constant such as pi, e, G, c, h to insert it directly into your expression. New Default Theme: Classic Light This update resets the default theme to Classic Light. Change back anytime in Settings. Bug Fixes and Performance - Fixed pixel overflow on tool screens in landscape mode - Fixed orientation lock issues for Fraction, Margin, Bubble Level, and converter screens - Improved overall system performance ### 1.0.2 — 2026-03-23 In this update: ● Optimized Ad Experience: We've refined our ad logic to ensure a smoother, more focused calculation experience for all users. ● VIP Syncing Improved: Upgrading to Premium is now more seamless than ever, instantly unlocking all features and removing ads across the entire app. ● Performance Enhancements: Minor bug fixes and UI refinements for a faster, more reliable calculator. ● Store Accuracy: Fixed an issue where subscription prices were occasionally not displaying correctly in some regions. Enjoying Calculator Plus? Please leave us a review! ### 1.0.1(12) — 2026-02-27 Optimized core engine for a faster and smoother calculation experience. • Fixed critical bugs and enhanced overall app stability. • Improved interface compatibility for the latest mobile operating systems. • Streamlined the VIP upgrade process for a better user experience. ## More apps by Hieu Dao - [Lịch Việt - Lịch Vạn Niên 365](https://appshunter.io/ios/app/lich-viet-lich-van-nien-365/id6758592547) - [SafeKey: Password Manager](https://appshunter.io/ios/app/safekey-password-manager/id6759216624) - [Moni: AI Expense Tracker](https://appshunter.io/ios/app/moni-ai-expense-tracker/id6760244782) All apps by Hieu Dao: https://appshunter.io/developer/1873849632 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*