Map Mirror vs Gear Formula

MapMirror gives everyone at the table a shared, living map to look at your world, city, region, or battle. Point at a door, measure a spell's range, reveal the next room, and your players see it live. It's made to support your in-person TTRPG game, not digitize it. You keep rolling real dice around a real table. MapMirror is simply the map they gather around, with your cities, regions, and dungeons linked into one connected world instead of a random pile of images. Connect a TV wirelessly with AirPlay or a monitor over a cable, and the map mirrors live. For the optimal experience we recommend an iPad with Apple Pencil. On iPhone and Mac you get a dedicated interface adapted to the platform. • Square & hex grids with real-distance calibration • Tokens, labelled markers, and fog of war • Draw on multiple layers, from a quick sketch to a map you build up over sessions • Link maps with markers and jump from the world map into a city or dungeon • Measure distances in your own units, point things out with the laser pointer • Control exactly what your players see and plan ahead in private • Notes, folders, backups, and image export No account. No internet needed. Nothing leaves your device. Free to try with every tool unlocked. The free version includes: • 2 maps and 1 note • 4 tokens per map • 2 markers per map • 2 texts per map • 2 drawing layers per map Backups and map export are part of the full version. One purchase lifts all limits and you keep it forever. No subscription.

Gear Formula: Calc & Simulator is a visual gear calculator and simulator for real-world transmission planning, learning, and quick design exploration. Built for bicycle riders, RC car builders, robotics teams, automotive tinkerers, mechanical engineering learners, DIY gearbox makers, and education use cases, the app helps you understand how gear choices affect ratio, speed, torque, and motion. What you can do: - Explore different gear families with clear visual selection flows. - Calculate gear ratio, RPM change, torque change, and drivetrain behavior. - Edit transmission values and see the simulator update in real time. - Compare how tooth counts and key parameters change the result. - Use guided validation feedback to review whether a setup looks balanced or too extreme. - Save and revisit useful configurations with Pro features. - Share saved configurations through app links with Pro features. Supported gear families in the current app: - Chain and sprocket - Spur gear pair - Planetary gear set - Bevel gear pair - Worm drive - Rack and pinion - Compound train Designed for multiple audiences: - Bicycle - RC Car - Robotics - Automotive - Mechanical Engineering - DIY Gearbox - Education Why Gear Formula is useful: - It is faster than doing repeated ratio math by hand. - It makes gear behavior easier to understand visually. - It helps users move from “What does this gear setup do?” to “Is this setup good for my goal?” - It works well for quick mobile checking, concept exploration, and learning. Important: Gear Formula is a reference and educational tool. Calculations, simulations, and validation guidance are not a substitute for professional engineering review, safety testing, or manufacturing verification. Free and Pro: The free version supports core calculation and simulation. Pro unlocks advanced workflow features such as Save, Share, Bookmark, and Validate, and also removes ads. Whether you are tuning cadence, exploring gearbox reduction, teaching gear fundamentals, or testing drivetrain ideas on the go, Gear Formula gives you a practical mobile workspace for gear calculation and simulation!