Iron Index vs Chronverter

Iron Index is the most comprehensive firearm inventory and management app available. Built for responsible gun owners, collectors, and enthusiasts who want a secure, organized way to track every aspect of their collection. SECURE BY DESIGN Your data is protected with SQLCipher AES-256 encryption and optional Face ID / Touch ID lock. Your information never leaves your device — no cloud, no servers, no accounts required. COMPLETE INVENTORY MANAGEMENT • Log firearms with manufacturer, model, caliber, serial number, purchase price, and current value • Track ammunition inventory with quantity, bullet weight, and type • Manage accessories (optics, suppressors, bipods, triggers, barrels, and more) with type-specific specs • Attach multiple photos to each firearm • Auto-fill from a built-in reference database of popular firearms, ammo, and accessories PREDICTIVE MAINTENANCE • Automatic maintenance schedules based on manufacturer recommendations • Track round counts per firearm • Get alerts when cleaning or part replacement is due • Full maintenance history log RANGE SESSION LOGGING • Log range sessions with rounds fired, location, and notes • Track ammo consumption automatically • View session history per firearm SMART BUDGET TRACKING (Pro) • Set annual budgets with category breakdowns (firearms, ammo, accessories) • Track purchases and sales against your budget • Visual progress bars and spending charts COMPLIANCE & DOCUMENTATION (Pro) • State-specific compliance checks for your collection • ATF Form 4 PDF generator for NFA items • Full PDF insurance reports for your entire collection • Data export with complete backup ESTATE PLANNING (Pro) • Designate heirs for individual firearms • Add transfer instructions and special notes • Generate estate planning documents SAFE SENTRY • Connect Govee Bluetooth sensors to monitor safe temperature and humidity • Historical readings with 30-day charts • Protect your collection from environmental damage WISHLIST • Track items you want to buy with prices and priority • Convert wishlist items directly to inventory when purchased Iron Index is designed and built in the USA. Your data stays on your device — always. Questions or feedback? Contact us at support@range-logic.com

Chronverter is the essential tool for air gun and airsoft enthusiasts who need fast, accurate ballistics conversions on the field or at the range. Point your chronograph, enter the reading, and instantly see how your muzzle velocity translates across every common ammo weight — all in one clean, tactical interface. What It Does Feed Chronverter a single velocity reading and it calculates the equivalent speed and muzzle energy for every ammo weight you care about, using the industry-standard kinetic energy conversion formula. No more mental math. No more spreadsheets. Key Features - Instant multi-weight conversion — See FPS, M/S, and Joules for all your ammo weights simultaneously in a clean, colour-coded table - FPS & M/S support — Switch between feet-per-second and meters-per-second with a single tap; input and output update instantly - Reference-row highlighting — The weight you measured is highlighted in amber so you can always see your baseline at a glance - Custom ammo weights — Add or remove weights to match your exact loadout; changes are saved automatically - Persistent settings — Your last-used ammo weight, velocity unit, and caliber are remembered between sessions - Caliber tracking — Log your barrel bore diameter in millimeters using the precision stepper or by typing directly - Minimal, high-contrast UI — Designed for bright outdoor conditions with a dark tactical theme and large, readable numbers - Chronograph Link — Connect Chronverter directly to your HT-X3005 or HT-X3006 WiFi chronograph and watch your shots come in live Who It's For - Airsoft players verifying field limits before a game - Air gun shooters comparing pellet performance - Tech players and gun tuners optimizing velocity for different ammo weights - Event referees or marshals performing quick field checks