ArrowTime Chrono vs TargetOS

Sound based chronograph uses the iphone's. microphones to compute arrow speeds at specified distances. App saves group info so you can track performance over time. Allows you to save your favorite bows and arrows and try different combos, then check the resulting speeds and consistency.

Most apps are digital scorecards. You shoot, you total, you're done. TargetOS is built as a small operating system for your archery data—so what happened on the line becomes something you can actually train from. What that looks like beyond the score: • Arrow-by-arrow logging with optional mental/physical ratings and notes • Impact / miss plotting and arrow heat-map style review so you can see group patterns, not just a number • Consistency tracking—where points drop, when they drop (late ends, distance changes, fatigue), not only the final total • Live concentricity-style feedback from photos after each game, scored by % • Structured practice paths and goal-oriented training blocks (not just "start a blank scorecard") • Blind / blank-bale support for form work when the rings shouldn't be the focus • Photos of faces/groups, setups, tuning-oriented flows • Interactive bare shaft tuning guide, with your setup notes saved on the device so you can check them anytime—or restore what worked after a change • Precision Cut Archery sight marks on the scorecard — import your PCA marks so yardage/sight info is right there. No app-switching mid-round. We don't do cuts or ballistics; you still use Precision Cut for that. TargetOS just brings your marks into the log. • CSV export for coaching review, spreadsheets, or long-term history • Offline-first: no account required; data stays on your device unless you export it • Same scorecard pattern across disciplines so Field, Vegas, ASA, and World Archery all feel familiar on the line • Running score bubble and optional per-end totals without leaving the card • Equipment setups saved with your sessions so bow/arrow changes stay tied to the data • Live weather data plus date and time stamped on sessions • Metrics that surface which bow you shoot best, common arrows dropped, and where those drops happen • All of it filterable so you can focus on what matters for your next tournament or competition Faces and formats in this build: • NFAA practice (Vegas, 5-Spot, Outdoor Target) • Field, Hunter, Animal • World Archery (18m, 50m, 70m, WA Field) • League / competition-style sessions alongside free practice ASA 3D (expanded): • Delta McKenzie and Rinehart targets available in dropdowns—not a generic "3D target" label • Current ASA classes in dropdown so the round is logged the way you actually shoot it • Course / multi-target flow built for real 3D days • Guessed yardage vs actual (where you use it) so ranging skill is part of the data, not just the score • Realistic target plotting so impact location and miss patterns mean something on animal targets • Session data that rolls into metrics with the rest of your archery log Stabili-Track (requires the separate Stabili-Track motion sensor): • Hold Steady tracking—left/right and up/down steadiness during your hold, not just a subjective feel • Cant tracking that self-references to your own hold, not an external zero, so it stays accurate regardless of how the sensor sits • Draw Lab—build a personal baseline from your own best draws, then practice against it instead of a generic target • Settle and peak timing so you can see how long it actually takes you to settle into the shot • All of it feeds the same Metrics dashboard as the rest of your sessions—one filterable history, not a separate tool