Calctan vs ScreenCase

Calctan is a high-precision scientific and financial tape calculator designed for iPhone and iPad. Built for students, engineers, accountants, and business professionals, Calctan bridges the gap between scientific computing and practical everyday finance. Edit complex formulas with ease, audit running totals on a printable tape, and enjoy a distraction-free workspace with no ads. KEY FEATURES 1. SMART FORMULA WORKSPACE • Direct Cursor Editing: Tap anywhere in your expression to fix numbers or operators instantly—no need to clear the expression and start over. • Live Syntax Validation: Real-time calculation preview with automatic balancing of parentheses as you type. • Fluid Multi-Line Display: Expressions scale dynamically so long formulas are never cut off. 2. ADVANCED SCIENTIFIC ENGINE • Complete Math Suite: Trigonometric functions (radians/degrees, inverse, hyperbolic), factorials, permutations, powers, roots, modulo, and logarithms. • True Order of Operations: Context-aware order of operations with high-precision calculations that minimize floating-point rounding errors. • Built-in & Custom Constants: A library covering mathematics, physics, and chemistry, plus customizable slots for your own tax rates or business ratios. 3. ACCOUNTING TAPE & REPORT EXPORT • Auditable Calculation History: Every calculation is automatically logged on a persistent digital paper tape. • Label & Categorize: Add custom notes, tags, and project labels to track expenses, homework problems, or client totals. • Batch Operations: Select multiple past entries to instantly calculate a running total. • AirPrint & PDF Reports: Generate itemized, professional calculation sheets to share, save, or print directly. 4. DESIGNED FOR PRODUCTIVITY • Multitasking on iPad: Full support for Split View, Slide Over, external keyboards, and trackpads. • iCloud Synchronization: Keep your saved formulas, constants, and calculation history unified across iPhone and iPad. • Customizable & High-Contrast Themes: Handcrafted color palettes designed to minimize eye strain during long study or work sessions. • Private & Ad-Free: No tracking, no data collection, and no subscription is required to calculate. We do not collect your data; calculations stay on your device and, if enabled, sync privately through your personal iCloud account. PERFECT FOR: • STEM & College Students: Algebra, calculus, physics, and exam prep with clear, step-by-step editing. • Finance & Accounting: Tax prep, budgeting, invoices, and expense verification with itemized tapes. • Retail & Small Business: Quick customer totals, discount percentages, and printable calculation logs.

"Screen Cover" will give your screen video or shot case a beautiful iPhone and iPad cover, so that your screen video or shot has a better visual effect and can be used in websites or other display materials. Supported Device Enclosures: # iPhone * iPhone Duo * iPhone 18 Pro / iPhone 18 Pro Max * iPhone 17 Pro / iPhone 17 Pro Max * iPhone 17 / iPhone Air * iPhone 16 Pro / iPhone 16 Pro Max * iPhone 16 / iPhone 16 Plus * iPhone 15 Pro / iPhone 15 Pro Max * iPhone 15 / iPhone 15 Plus * iPhone 14 Pro / iPhone 14 Pro Max * iPhone 14 / iPhone 14 Plus * iPhone 13 Pro Max * iPhone 13 / iPhone 13 Pro * iPhone 13 Mini * iPhone 12 Pro Max * iPhone 12 / iPhone 12 Pro * iPhone 12 Mini * iPhone 11 / iPhone 11 Pro / iPhone 11 Pro Max * iPhone XR * iPhone Xs / iPhone Xs Max * iPhone X * iPhone 8 / iPhone 8 Plus * iPhone 7 / iPhone 7 Plus * iPhone 6s / iPhone 6s Plus * iPhone SE #iPad * iPad 5/ iPad 6/ iPad 7/ iPad 8/ iPad 9/ iPad 10 * iPad mini 4 / iPad min 5 * iPad Air 2 / iPad Air 3 / iPad Air 4/ iPad Air 5 * iPad Pro 11 inch Generation 2/iPad Pro 11 inch Generation 3 * iPad Pro 12.9 inch Generation 2/iPad Pro 12.9 inch Generation 3/iPad Pro 12.9 inch Generation 4/iPad Pro 12.9 inch Generation 5/iPad Pro 12.9 inch Generation 6 * iPad Pro M4 M5 11inch/13 inch * iPad Air M2 11inch/12.9inch Welcome comments and suggestions: admin@fandong.me Automatic Subscription Explanation for Screen Case Membership • By becoming a Screen Case member, you can unlock all premium features, enjoy future free updates, and experience an ad-free environment. • Upon confirmation of purchase and payment, your iTunes account will be automatically charged for renewal. Apple iTunes will deduct the fee 24 hours before the expiration, and the subscription period will be extended for another subscription period after a successful deduction. To cancel the renewal, please manually turn off the auto-renewal function in iTunes/Apple ID settings management at least 24 hours before the current subscription period expires. It is your voluntary choice to cancel the service. If you choose not to cancel, the renewal service for the next billing period will be activated for you. Privacy Policy: https://screencase.app.xiaobingkj.com/privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/