iTronix by SparkEVO vs ArrowForge

SparkEVO iTronix is an advanced ignition system for 2 and 4 stroke petrol engines. It offers intelligent solutions for interfacing with the user and for the set-up of the system itself.

Stop guessing. Build the perfectly matched setup before you buy the parts. Max your effectiveness. ArrowForge turns the guesswork of your bow and arrow setup into clear, ballistics-grade answers. Enter your bow and arrow (or Pro users get AI recommendations), and instantly see whether your build actually works — spine, FOC, speed, kinetic energy, and lethal range — with the math explained in plain English. Experiment with modifications before you buy the parts. ArrowForge Pro is an auto-renewing subscription: $6.99/month or $39.99/year. Payment is charged to your Apple Account at purchase. It renews automatically unless turned off at least 24 hours before the period ends; manage or cancel anytime in Account Settings. Terms: https://arrowforge.app/terms · Privacy: https://arrowforge.app/privacy Built by a bowhunter, for bowhunters and archers who want to understand their setup, not just copy a chart. DIAL IN YOUR BUILD — FREE • Dynamic spine check against a multi-brand consensus — know if your specs is right before you buy • FOC, GPP, GPI, total weight, and a calibrated arrow-speed estimate • Kinetic energy & momentum at the bow and downrange • Drag-aware field-ballistics solver with an uphill/downhill shot-angle dial • Sight pins, holdover, and pin-gap planning • Pursuit Effectiveness — your lethal range by game class (deer, elk, toughest game) from real KE + momentum thresholds • Build Match Score weighted to your hunt and goal • Every number comes with a plain-English explanation of why it matters ARROWFORGE PRO — AI + THE MATH • AI bow & arrow spec lookup — type a model, get the specs • AI Arrow Recommender — purpose-built archetypes for your setup • AI Sanity Check, Build Plan, and tuning insights • The exact formula AND your step-by-step calculation behind every number AN INFORMED SECOND OPINION — NOT A SHORTCUT ArrowForge is a sanity-check, not a substitute for proper tuning by qualified bow technicians. It defers to your bow technician on spine, draw length, and setup safety, and it never tells you to take an unsafe shot. Always verify on the range and with a qualified pro before you hunt. Core calculations work offline. No ads. No data selling.