Improvements and Fixes • Fixed rounding (round down/up) being applied in reverse when converting tax-inclusive amounts to tax-exclusive. • Fixed the keypad extending beyond the screen in iPad Split View and Slide Over. • Improved grading accuracy and answer choices in the formula quiz. • Fixed errors not displaying correctly in some languages. • Fixed grouping and decimal separators not matching the regional format in some regions. • Updated Korean social insurance rates to 2026 figures. • Various bug fixes and stability improvements.

• Fixed accidental digit deletion when swiping across the display. Deleting is now done with the backspace key only. • Buttons no longer trigger if you slide your finger off before releasing (prevents accidental AC). • World clock city names are now shown in Chinese (Simplified/Traditional), German, Spanish, French and Portuguese, and can be searched by those names. • Fixed city names being shown twice in the time zone list. • Translation cleanup and stability improvements.

• Improved calculation accuracy — scientific function results and entering a new number after "=". • Fixed the accent color not applying on some screens. • Stability and VoiceOver improvements.

・Added a way to support the developer. 　Available from Tools > Settings > Support. ・Tipping is entirely optional and unlocks nothing. 　This app stays free, with no ads and no tracking.

Bug fixes and stability improvements. Thanks for using Smart Calculator!

• Dark/Light mode now follows your system settings automatically (or choose System, Light, or Dark in Settings). • Improved scientific calculator — enter functions, parentheses, π, and e as an expression and calculate it all at once. • Stability improvements and bug fixes.

What's New • Formula Quiz: Turn the formula library into a quiz. Pick a category and difficulty, then get instant scoring with multiple-choice or free-input answers. • Stock Averaging-Down Calculator: Instantly see your new average cost and profit/loss after buying more — plus the shares needed to reach a target average. • Mac support: Now on Mac, with a layout that adapts to your window size and hardware keyboard input. • More European VAT: Added Italy and Netherlands VAT (shown based on your region). • Accessibility & design: Dynamic Type support and a refreshed look for the formula screens. • Stability improvements and bug fixes. As always, it works offline — no ads, no tracking, no account.

What's New in v1.7.2 • Now available on Mac (macOS). • Added a starry "cosmos" animation with orbiting planets to the astronomy formula screens. • Fixed a display issue and made minor improvements.

■ New: Formula Library (interactive) Added 71 formulas across 5 fields — geometry, finance and daily life, trigonometry and algebra, physics and engineering, and astronomy. Pick a formula and enter values to calculate on the spot. For geometry, your values appear live on the shape, and you can see your numbers substituted into the formula in real time. Each formula now includes a usage help and an explanation of what it is, its origin, and history, in all 9 languages. ■ Thousands separators everywhere Commas now appear in real time as you type (for example, 100000 shows as 100,000), and are applied to calculated results too.

• Remembers your last calculation: reopen the app and your last completed expression and result are right where you left them. • Everything stays on your device only — no network, no server storage. • Stability improvements.

What's New in Version 1.6.2 ■ Now available in 9 languages Added German, Spanish, French, and Portuguese (Brazil) — joining Korean, English, Japanese, and Chinese (Simplified and Traditional). The app follows your system language automatically, and you can switch manually in-app. ■ New VAT calculators by country Based on your country of residence (in Settings under Region), VAT calculators for China, Germany, Spain, and France now appear. Convert between net and tax-included amounts both ways, with each country's standard rates plus a custom rate. Includes a reference-only note on first open and a help guide in each tool. ■ More countries of residence Added China, Germany, Spain, and France under Settings, Region. Tools switch to match where you live, independently of your display language. ■ Text and readability improvements Refined help and disclaimer text across all 9 languages and polished wording in each language. Thanks for using Smart Calculator!

• Added a help (?) button to every tax and finance calculator that explains how each result is calculated. • Country-specific tools now appear based on your region — Japanese tax tools in Japan, and new payroll & living-cost calculators in Korea. You can change your country in Settings › Region. • Added Chinese (Simplified & Traditional). • Minor improvements and stability fixes. Thanks for using Smart Calculator!

v1.4.0 — Japan-focused update This release adds a set of Japanese tax calculation tools, available when the app's display language is set to Japanese: • Consumption Tax — pre-tax ↔ tax-included conversion, 10% / 8% / custom rates, half-up / round-down / round-up • Simplified Tax — deemed input rates for 6 business categories • Invoice Transitional Measure — 80% (through 2026.9) / 50% (through 2029.9) deductible amounts • 20% Special Measure — simplified payable tax for newly-taxable invoice issuers • Marketplace Selling Profit — final profit and margin from selling price, fee (10%), shipping, and item cost Other improvements • Translation refinements (Korean and Japanese) • Minor UI polish and bug fixes * Tax calculations are for reference only. For actual filing and payment, please consult a tax professional or refer to the latest guidance from Japan's National Tax Agency.

New: Time Zone Calculator • Drag the slider to set one city's time and instantly see the time in every other city — "When it's 3 PM in Tokyo, what time is it in New York?" • Daylight saving handled automatically, with next-day / previous-day labels • Search 50+ cities worldwide in English, Korean, and Japanese • Add cities freely, and Save only the lineup you want to keep As always: no network, no permission prompts — everything is calculated right on your device. We also removed the clipboard prompt that appeared on launch, for a cleaner start.

v1.2.0 - Discount Calculator: List price + discount rate (%) or fixed amount → savings and final price - Bill Split: Total amount + separately-paid amounts + number of people → amount per person

1.1.0 Updates • In-app language settings (Korean / English / Japanese / System) • Home screen app name automatically follows system language • Improved dark mode text readability • Instant localization across Unit Converter, Tip Calculator, and all other screens • Stability improvements and bug fixes