Numeris 3D Graphing Calculator vs Convertly

Numeris combines a full-featured scientific calculator with a powerful function plotter in one beautifully crafted app. THREE MODES - ONE CALCULATOR • BASIC - Quick everyday calculations with intuitive controls • SCIENTIFIC - Trigonometry, logarithms, exponentials, factorials, constants and more • GRAPHING - 2D function graphs and stunning 3D surface plots RPN MODE • Reverse Polish notation with a live stack display, in the style of classic RPN calculators • Enter, SWAP, DROP, DUP and R↓ plus every scientific function • Toggle with one tap in the header; the setting is remembered NEXT-GENERATION FUNCTION PLOTTER • Plot unlimited functions simultaneously in vibrant colors • Symbolic derivatives up to 5th order - automatically computed and simplified • Smart auto-fit detects zeros, extrema, and periodicity • 3D surface plots with rotation, zoom, and pan via touch gestures • Independent axis scaling for X, Y, and Z THOUGHTFUL DESIGN • Elegant OLED-optimized interface with glassmorphism effects • Color-coded bracket pairs for error-free formula entry • Live LaTeX preview of your formulas • Complete calculation history with search • Optimized for iPhone and iPad - landscape included 20 LANGUAGES Numeris speaks your language: English, German, French, Spanish, Italian, Portuguese, Japanese, Korean, Chinese, Russian, Turkish, Arabic, Hindi, Dutch, Polish, Swedish, Danish, Norwegian, Finnish, and Ukrainian. PERFECT FOR • Students in math, physics, and engineering • Teachers who want to demonstrate functions live • Professionals who need quick calculations and visualizations • RPN calculator veterans who will not give up RPN • Anyone looking for a beautiful and powerful calculator Core features are free. Unlock unlimited graphing with a one-time purchase - no subscription, no ads, no data collection.

Convertly is a simple and fast file converter designed to help you convert images and PDFs directly on your iPhone. Convert JPG, PNG, and HEIC images, create PDF files from images, compress file sizes, preview files clearly, and share your converted files in seconds. The app is built for users who need a quick, clean, and reliable way to convert files without complicated steps. Select your file, choose the output format, tap convert, then save or share the result. Convertly also supports batch conversion, image compression, clean previews, and image-to-PDF creation, making it useful for students, workers, business owners, creators, and anyone who handles documents or images. All conversions are designed to be simple, fast, and easy to use, giving you a smooth file conversion experience whenever you need it