MMH Calculator vs LiftDiff

With the MMH Calculator (Manual Material Handling) the recommended weight limit for lifting tasks can be calculated. The calculation is based on the revised NIOSH lifting equation. This method is internationally established, and is e.g. used by Dutch Labour Inspectorate. The app is applicable for working situations with lifting tasks. After input of several characteristics of the lifting tasks, the recommended weight limit is calculated, and the associated risk is indicated. Moreover, it becomes clear how the lifting task may be improved. Please read the Info tab in the app: in some lifting situations the NIOSH method may NOT be applied. Source: Waters TR, Putz-Anderson V, Garg A, Fine LJ. Revised NIOSH equation for the design and evaluation of manual lifting tasks. Ergonomics. 1993 Jul;36(7):749-76. This app is offered by INTERGO bv • International Centre for Safety, Ergonomics & Human Factors. INTERGO website: http://www.intergo.eu

Simplified gym log. ■ Press. Slide. Logged. Hold the start button and your routines fan out under your thumb. Slide onto the one you came here to do — one thumb, one motion, from anywhere in the app. Favorites sit closest to your thumb, and you can start empty and add exercises as you go. ■ Lift more. Tap less. The set ends, the timer starts, and you put the phone down. Rest runs in the Dynamic Island and on the Lock Screen — never unlock to check it, and never open the app to start the next set. Complete a set from the Lock Screen, or expand for the next exercise, sets left, and time remaining. ■ See where the load landed. Every set you log feeds a per-muscle recovery estimate, drawn on a body map. Not a single "readiness" number — seventeen muscles, each decaying at its own rate. Which muscle is most fatigued is reasonably reliable. How fatigued it is — the absolute number, the percentage — is a rough guide only. Sleep, nutrition, stress and age are not part of this calculation. ■ Week by week, exercise by exercise. See your progress, not just your logs. Every week is diffed against the one before it, and what moved is marked ++ or −. Every exercise keeps its own estimated 1RM, top weight and volume over time, with every set you have ever done under the chart. ■ Friends. Share only a summary of the workout you finished. Friends see that you trained, how long, how many sets, and which muscles — exercise names and weights only if you choose to include them. Your actual records, the sets and the notes, never leave your device. Per-exercise rankings — estimated 1RM, top weight, and sets this week — let you line up against friends who train the same lift. ■ Import anything. Export everything. Bring your history in from anything — another app's export, a spreadsheet, your own notes. Strong and Hevy CSVs import directly. For anything else, the app hands you a prompt that converts it, and RPE becomes RIR on the way in. Take it back out as JSON or CSV, as a file or straight to the clipboard in one tap. RIR, notes and warm-up sets all survive the round trip. It is one SQLite file on your device, with no third-party analytics SDKs. The schemas are public, so anything can read it. Including you. liftdiff.history/v1 · liftdiff.routine/v1 ■ The essentials. ・175 exercises ・RIR & RPE ・Supersets ・Warm-up & drop sets ・Plate calculator ・Rest timer ・Home Screen widgets ・Shareable images ・Per-muscle set counts ・Custom exercises ・Short-version routines ・Favorites ・iCloud sync ・English & 日本語