GunKoo vs One More Gun
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.
One More Gun
Organize your firearm inventory with detailed records, photos, and maintenance logs. Track practice sessions, monitor service needs, and set personal goals for responsible ownership.
- Private firearm inventory
- Photo attachments
- Round count tracking
- Range session logging
- Maintenance logs
- Service reminders
- Goal tracking with badges
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Your firearm inventory, range log, and maintenance history—organized privately on iPhone. One More Gun connects firearm profiles, photos, range sessions, round counts, service history, and private challenges to the correct record. No account is required, and your records stay local to your device unless you choose to create and store a backup. ORGANIZE YOUR FIREARM INVENTORY • Save firearm photos, specifications, private notes, and optional serial-number fields. • Search your collection and see readiness and maintenance status at a glance. • Use photo-assisted setup with on-device text recognition and editable catalog suggestions. TRACK RANGE SESSIONS AND ROUNDS • Log rounds manually or use microphone-based impulse estimates. • Review and correct estimated counts before saving. • Record session notes and optional target scores. • Create privacy-safe range recap cards without exposing private records. STAY AHEAD OF MAINTENANCE • Schedule cleaning and lubrication by round count or calendar date. • See upcoming and overdue service in one place. • Keep a per-firearm service history and on-time maintenance streak. PRACTICE TOGETHER, PRIVATELY • Create private goals for practice, maintenance, inventory readiness, or accuracy. • Share an invitation by image, QR code, or link. • Each participant’s progress and firearm records remain private and local on their own iPhone. PRIVATE BY DESIGN • No account required. • No third-party advertising or tracking. • No firearm-record upload to a developer server. • User-controlled backup and restore. Free includes one firearm profile with all current features. One More Gun Pro unlocks unlimited firearm profiles. One More Gun is a private recordkeeping utility. It does not sell firearms, ammunition, or accessories; facilitate transfers or public listings; or provide legal, tactical, safety-certification, or gunsmithing instruction. Audio round detection is an estimate and should be reviewed before saving. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://tenxsecurities.com/privacy/
Screenshots
Verdict
The clearest difference is in-app purchases: GunKoo at none against One More Gun's 3. GunKoo also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). One More Gun's advantage is update cadence (every 3 weeks vs every 6 weeks). On price and ads there is nothing between them.
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. One More Gun sells 3 in-app purchases, starting at $0.99 per month. GunKoo asks for nothing beyond the download.
GunKoo ships an update every 6 weeks, One More Gun every 3 weeks. The most recent releases landed on September 10, 2026 and September 14, 2026 respectively.
| Parameter | GunKoo | One More Gun |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 6 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 66 MB | 25 MB |
| Age rating | 12+ | 4+ |
| Developer | KAI,NING KUO | TenXsecurities LLC |
In-app purchases
GunKoo
No in-app purchases
One More Gun
- Pro Monthly$0.991 Month
- Pro Annual$9.991 Year
- Pro Founding Lifetime$19.99






