DRIN vs QuadVault

DRIN is the all-in-one offline toolkit for FPV racing pilots, long-range builders and hobbyists. Whether you're planning your first 5" quad or maintaining a fleet of 10" long-range platforms - DRIN has the tools you need, no internet required. 17 OFFLINE CALCULATORS • Flight time & thrust-to-weight ratio • Battery capacity, charge time & health (mAh → Wh) • ESC & propeller thrust • Ohm's law & link budget • Signal distance, VSWR loss & dBm to Watts conversion • Dipole design, antenna angle & radio horizon • VTX frequency table & Rx/Tx intermodulation checker All calculators work fully offline — in the field, at the bench, anywhere. PREFLIGHT CHECKLISTS • Separate checklists for FPV, fixed-wing and preflight inspection • Fully offline — never miss a step, even without signal COMPONENT FINDER WITH LIVE PRICES • Browse and compare drone parts sourced from AliExpress — only components with verified quality • Auto-generated build recommendations for 5", 7", 8", 9" and 10" drones • Build your own setup from recommended parts, or bookmark components to a local database • Price updates delivered directly in the news feed FLIGHT LOG & BLACKBOX IMPORT • Log every flight manually or import directly from Betaflight Blackbox • Track: voltage start/end/min, flight duration, temperature, altitude, distance, battery health • Assign logs to specific drones and batteries • Visualize your data with charts: voltage drop, flight duration, distance & altitude, flight type breakdown BETAFLIGHT CAMERA & VTX PRESETS • Ready-to-use Betaflight configurations for popular cameras and VTX modules • Save your preferred presets for offline access KNOWLEDGE BASE & NEWS • Short guides and life hacks written by pilots who fly daily • Component overviews, setup tips and best practices • News feed with firmware releases and price updates • Save any article offline for field reference Available in English, Ukrainian, Spanish and Portuguese.

QuadVault is the digital garage built for FPV drone pilots. Keep your entire fleet organized — every part, every build, every battery, and every dollar — all in one place, completely offline. Stop juggling spreadsheets and notes. Whether you fly freestyle, race, or long range, QuadVault helps you know exactly what you own, what you have built, and what it cost. KEY FEATURES • Parts Inventory — Catalog every component with brand, model, price, and status. Enter barcodes manually for quick reference. • Build Manager — Create quads and assign parts to each build so you always know what is on every airframe. • Spending Analysis — Visualize your costs with clear charts: total, monthly, per-build, and by category. • Battery Health — Track charge and discharge cycles, and get reminders before a pack should be retired. • Repair Log — Record crashes, damaged parts, and repair costs to learn from every flight. • Build Share Cards — Show off your setups with shareable configuration cards. • 100% Offline & Private — No account, no network, no tracking. Everything is stored locally on your device. Take control of your FPV hobby with QuadVault.