Rolled Throughput Yield RTY

Every failed unit costs you twice: once to make it, and again to replace, fix or scrap it. RTY (Rolled Throughput Yield) shows how many units come through every step of your process first time, with no rework or scrap. Enter the steps in the order a unit passes through them, and see where the hidden factory is working against you. Free to use as long as you want: • Up to 20 process steps • Enter units in and units out, a % pass, or a Cpk. The app works out the rest • RTY and the average yield per step (normalised yield) • Yield by step, with the pass rate and share of the loss for each, following 500 to 10,000 units through the process • A Pareto chart that ranks the steps by loss and marks the vital few that make up the first 80% • The “Funnel”: watch 250, 500 or 750 units fall through your process, with a different result each run • What-if on the built-in example data • Plain-language help for every figure One unlock, with no subscription, adds: • What-if on your own data: move a slider for any step to see the new RTY and how many more good units you would get per 1000 started • An RTY target: set the RTY you want and see the pass rate the steps need to reach it • A process improvement target: reduce the failures in the vital few steps by 5% to 50% and see the RTY points each one gains • Save your process data on your device and load it back later • Export a CSV for your spreadsheet • Print or share a PDF report with the yield table, the Pareto and your what-if results Your data stays on your device. RTY works fully offline, has no account, no adverts and no tracking, and collects nothing. Honest numbers: the results are calculated from the figures you enter. Where a Cpk is converted to a pass rate, the app assumes a centred process. The Funnel is a simulation of chance, so each run differs from the last. Use RTY to guide your improvement work, not to replace your own judgement. Built by a quality engineer who wanted a clear, quick way to see the cost of failures across a whole process. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/