GunKoo vs Arsenal
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GunKoo
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GunKoo, where Koo has a similar pronunciation as the Chinese character for Storage (库, or kù), is the complete firearms inventory management app designed for collectors, enthusiasts, and sport shooters. Keep your entire collection organized with detailed tracking, beautiful photo galleries, and powerful search capabilities—all stored securely on your device. COMPREHENSIVE FIREARMS TRACKING • Capture every detail: brand, model, generation, variant, caliber, and serial number • Track military designations and firearm types • Upload multiple photos with gallery support and key photo selection • Record purchase information including cost, date, and source • Monitor ownership status (owned, wanted, sold, transferred, disposed) • Add custom notes and specifications AMMUNITION INVENTORY MANAGEMENT • Track ammunition by caliber, brand, bullet type, and grain weight • Monitor current stock levels with automatic quantity tracking • Record acquisition and usage transactions with full history • Set minimum thresholds and get low-stock alerts • Track ammunition costs and purchase sources • Attach photos to each ammunition type ACCESSORIES ORGANIZATION • Catalog scopes, optics, magazines, and all accessories • Link accessories to specific firearms • Track accessory types, costs, and purchase details • Upload photos for each accessory • Add custom notes and specifications POWERFUL SEARCH & ORGANIZATION • Search across all items instantly • Filter by caliber, type, status, and more • Sort by name, date, or custom criteria • View detailed summaries of your entire collection • Track total inventory value automatically BACKUP & RESTORE • Export complete backups including all photos and data • Restore your collection on new devices • Clear data before importing to avoid duplicates • All backups stored locally for your privacy INVENTORY INSIGHTS • View collection statistics at a glance • Track total firearms owned vs. wanted • Monitor ammunition stock levels • Calculate total collection value • Identify low-stock ammunition PRIVACY & SECURITY • All data stored locally on your device • No cloud storage or external servers • Your data never leaves your device • Complete offline functionality • Optional backups you control BEAUTIFUL DESIGN • Clean, intuitive interface • Light and dark mode support • Optimized for iOS and iPadOS • Fast, responsive performance • Regular updates and improvements Whether you're a collector managing hundreds of items or a sport shooter tracking essentials, GunSafe gives you the tools to stay organized. No subscriptions, no cloud requirements—just a powerful, private inventory system that works the way you do. Download GunKoo today and take control of your firearms inventory.
Arsenal
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ARSENAL is a private, on-device tracker for your firearms collection. No accounts, no cloud, no data leaving your phone — just a fast, focused log of everything you own. Your whole collection, organized Catalog firearms, ammunition, and accessories with the details that matter — caliber, serial, condition, value, and photos. Everything cross-links: open a rifle and see the ammo you have on hand for it and the optics mounted to it. Range log that works for you Log every range trip with rounds fired, location, and notes. ARSENAL subtracts the rounds from your ammo inventory automatically, so your counts stay honest and low-stock alerts actually mean something. Never miss a cleaning Set a round-count threshold and ARSENAL flags any firearm that's due for cleaning. Keep a full maintenance history — cleanings, repairs, parts, and inspections — for every gun. Built for the details • NFA item tracking — tax stamp number, trust or individual, approval date • Loadouts — save a firearm with its accessories and ammo as a ready kit • Ammo inventory with per-caliber low-stock alerts • Dashboard with collection value, round counts, and what needs attention Private by design Your data is stored only on your device. Lock the app behind a PIN, and export a full backup whenever you want. Nothing is uploaded, ever. Own your records Export your entire collection to CSV or JSON for insurance, estate planning, or your own recordkeeping — and import it back anytime. ARSENAL is an organizational tool, not a legal record of ownership or compliance. Always follow the firearm, ammunition, and NFA laws that apply where you live. What's New (for the first release) Welcome to ARSENAL. Track firearms, ammo, and accessories; log range trips and maintenance; set low-stock and cleaning alerts; save loadouts; and keep it all private on your device.
Screenshots
Verdict
GunKoo and Arsenal are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | GunKoo | Arsenal |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 66 MB | 28 MB |
| Age rating | 12+ | 4+ |
| Developer | KAI,NING KUO | Justin Den Hartog |
In-app purchases
GunKoo
No in-app purchases
Arsenal
No in-app purchases








