Dark Reader for Safari vs RayCrest Lab Calculator

Dark Reader is an eye-care Safari extension that enables night mode by creating dark themes for websites on the fly. It inverts bright colors to make web pages high contrast and easier to read. Dark Reader integrates seamlessly with system dark mode. Adjust brightness and contrast to match your display and ambient lighting. Enable dark mode on every web page or give websites a sepia tone. Select from multiple color theme presets or create your own by customizing background and text colors. Enable or disable Dark Reader for specific websites, automatically sync with system dark mode, or detect already dark websites and leave them unchanged. Developed by the original creators of Dark Reader. Since 2014, we continuously evolve alongside modern web technologies to deliver fast and reliable dark mode support for people sensitive to bright light. A single purchase includes access to the macOS version (Safari browser) when using the same iCloud account. Dark Reader contains no ads and does not collect user data. Enable Dark Reader in Safari preferences and disable similar extensions to prevent conflicts. Enjoy browsing!

RayCrest Lab Calculator is a bench-side calculator for researchers, students, and lab teams who prepare buffers, solutions, dilutions, and timed protocols. Turn buffer parameters into practical prep guidance. Choose a buffer, set target pH, concentration, volume, temperature, and preparation preference, then generate steps for weighing solids, mixing stocks, or titration. Built-in tools include: - Buffer charts and filterable buffer selection - Henderson-Hasselbalch buffer recipes - Stock mixing and titration guidance - Solution and dilution calculations - Mass/volume, mole/volume, and molarity conversions - Protocol timers for repeated lab steps - Optional compound lookup and manual molecular weight entry - Saved recipes, compounds, and preferences Designed for iPhone and iPad, RayCrest Lab Calculator keeps everyday lab math organized in one place. Use quick calculations at the bench on iPhone, or the larger iPad layout for planning recipes, viewing buffer ranges, and checking multiple values. Local by default: Saved recipes, compounds, and preferences are stored locally on your device. The app does not include analytics, advertising SDKs, or tracking frameworks. Manual calculators work without online lookup; optional compound search may use network access only when you choose to look up compound information. RayCrest Lab Calculator is a calculation aid for research and educational lab workflows. Always verify units, pH, reagent compatibility, and safety requirements before preparing reagents.