Cardo Devil

Cardo Devil is the oboe reed maker's private ledger. Every blank you tie gets a permanent record — thread colour, tube number, cane batch, shaper tip, staple, and tie length — and follows it through five bench stages until the day you retire it. When a batch of cane finally runs out, Cardo Devil tells you exactly how many reeds made it to Playable and how long they lasted. No guesswork, no memory, no spreadsheet. Log each practice, rehearsal, performance, and lesson session on a reed and watch its lifespan accumulate in minutes. Attach a backlit tip photo at Rough Scraped and again at Finished, then compare them side by side on the scrub timeline in Reed Detail. When a reed ends its life, record the reason — Cracked, Closed, Went flat, Broke at tip — and Cardo Devil files it in the retirement history so the pattern shows up in your batch rankings. Rankings are the heart of the app. Cardo Devil calculates yield — the share of blanks from a group that reached Playable — for every cane batch, every shaper tip, and every staple model in your kit. Flip between yield and median lifespan to find which combination of supplier, shaper, and staple consistently produces your best work. A supplier's reputation is hearsay. The batch ranking in Cardo Devil is a count of your own reeds. Completely offline. No account, no sync, no analytics. Your data and photos stay on your device. Add your own suppliers, shaper tips, staple models, and retirement reasons to the catalogue alongside the shipped reference entries. Works portrait on iPhone.