SpringCalc vs Volume Shader

SpringCalc is a professional engineering calculator for mechanical springs. Enter any subset of spring parameters and SpringCalc solves for the rest — wire diameter, mean diameter, coil count, free length, spring rate, force, stress, safety factor and predicted fatigue life. Features: • Three spring types: Compression, Extension, Torsion • 15 built-in materials (Music Wire, Hard Drawn, Oil Tempered, Chrome Silicon, Chrome Vanadium, 302/304/316/17-7 PH Stainless, Phosphor Bronze, Beryllium Copper, Monel 400, Inconel 600/X-750/718) with JIS aliases (SWP-A/B, SUS302/304/316-WPB, SWOSC-V, etc.) • ASTM/SAE and JIS B 2704 calculation standards • Constraint-based solver with Wahl factor stress correction • Goodman + Basquin fatigue life prediction with environmental and temperature derating • Force-deflection and S-N curves via Swift Charts • 3-candidate design suggestion when system is under-determined • Standard wire gauge snap (ISO 2702 / SWG) • Custom material editor • Metric, Imperial and Mixed (mm/kgf) units • PDF and text report export • Save designs locally with SwiftData • Localized in English, Traditional Chinese and Japanese References: Shigley's Mechanical Engineering Design 10e Ch.10, JIS B 2704:2009, JIS B 2705:2014, SMI Handbook of Spring Design. All calculations run entirely on-device — no account, no cloud, no tracking.

Volume Shader is the viral Volume Shader BM GPU test, built natively for iPhone and iPad. The Mandelbulb ray march runs in Metal on your iPhone or iPad. WHAT YOU CAN DO • Run Volume Shader BM at Simple, Standard, Advanced, or Extreme • Use Standard + 30 seconds when you want a score you can compare • Drag to rotate, pinch to zoom, and pan. Explore does not save a score. • Time CPU and memory on the same device • See GPU, memory, display, storage, and thermal state • Walk a display, touch, haptics, speaker, and battery checkup HEAT AND BATTERY This is a real GPU workload. The device can get warm and the battery will drain faster while a test is running. Extreme asks for confirmation. The app stops itself if iOS reports a critical thermal state. ADS Volume Shader is free. A small banner sits on Test and Device. Labeled native ads sit on Test, Device, and Checkup. Ads do not overlay the GPU test or fullscreen checkup steps. You can report an ad from the AdChoices icon on the ad. After one free Test session and one free Checkup session (each about 15 minutes), the next free session waits about 30 minutes. You can wait, or watch an optional short ad to unlock unlimited Tests and Checkup for 2 hours. Declining the ad does not block the rest of the app. PRIVACY No account. History and checkup marks stay on this device. A finished GPU window can be shared as anonymous device stats (FPS, GPU, device model, screen, OS version). Turn that off in Settings. If you tap Share, iOS’s share sheet sends only what you chose to the app you pick. Ads use the ads SDK described in the privacy policy. Support: https://volumeshaderbm.com Privacy: https://volumeshaderbm.com/privacy-policy/