TPCalc vs GelDoc Imager

TPCalc makes it easy to set up your bike tires with the right pressure. Just enter your weight, bike weight, and tire size, and the app calculates recommended front and rear pressures. The app adjusts results based on bike type and weight distribution, helping you get the right balance of comfort, grip, and rolling efficiency. Whether you ride road, gravel, mountain, or touring bikes, TPCalc takes the guesswork out of tire setup and makes every ride smoother. TPCalc is free and ad-free for everyone. Three optional support purchases let you contribute to continued development. Each support purchase is a one-time consumable payment that can be repeated; it does not unlock features or start a subscription.

GelDoc Imager is a specialized camera application designed for scientists and researchers who need precise control over gel electrophoresis imaging. Capture high-quality images of your gels with full manual camera controls and professional image processing tools. **Key Features:** **Manual Camera Controls** - Full manual focus control with 3x zoom preview for precise focusing - Adjustable ISO (50-12800) with automatic range detection per camera sensor - Customizable shutter speed (1/8000s to 30s) with logarithmic slider and long exposure presets - Exposure compensation (EV) for fine-tuning brightness - Tap-to-focus autofocus mode for quick focusing **Multiple Camera Lenses** - Switch between ultra-wide (0.5x), wide (1x), and telephoto (3x) lenses - Front and back camera support with easy flip button - Dynamic ISO and shutter speed ranges adapt to each camera sensor **Image Processing** - Real-time contrast adjustment (0.5x to 2.0x) - Saturation control (0.0 to 2.0x) for color enhancement - Color inversion for negative gel visualization - True black and white conversion - All adjustments apply in real-time to the live preview **Professional Workflow** - Automatic metadata stamping: All camera settings (ISO, shutter speed, exposure, focus, contrast, saturation) plus date and time are automatically stamped onto saved images - In-app gallery: View all photos taken with the app in a dedicated gallery - Full-screen photo viewer with pinch-to-zoom, swipe navigation, and smooth gestures - Photos saved directly to your device's photo library **Settings Persistence** - All camera settings automatically save and restore between sessions - Maintains lens selection, focus position, and all manual controls Perfect for molecular biology labs, research facilities, and anyone who needs precise control over gel documentation. Whether you're imaging DNA gels, protein gels, or other electrophoresis samples, GelDoc Imager gives you the tools you need for professional-quality documentation.