Comparison

GunKoo vs One More Gun

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

GunKoo

Features
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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.

About

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.

Highlights
  • Private firearm inventory
  • Photo attachments
  • Round count tracking
  • Range session logging
  • Maintenance logs
  • Service reminders
  • Goal tracking with badges
Features
Read full description

Your collection. Your rounds. Your maintenance. One clear record on your iPhone. One More Gun brings firearm photos, range logs and service reminders together. Ordinary recordkeeping works on your device without an account. SEE YOUR COLLECTION AT A GLANCE Browse profiles with photos, round totals and maintenance reminders. Search by name, type, caliber or round count. Open a record or log rounds and service directly from its card. LOG ROUNDS WITH FEWER STEPS Choose a quick round amount or enter your own total. Add notes, a date and an optional target score. Keep each session connected to the correct firearm and review your activity later. MAKE MAINTENANCE CLEAR Track cleaning and lubrication separately. Set reminders by elapsed time or rounds fired, whichever comes first. Review due dates and round limits, then record completed service and notes. BUILD YOUR PROFILES Choose a manufacturer and model, review catalog suggestions, or enter custom details. Add up to three photos using your camera or photo library, plus optional specifications and existing round totals. ACCESSORIES AND PHOTO DETAILS Record a primary optic, secondary optic and weapon light, each with up to two photos. View inline thumbnails and open a gallery to zoom, pan and inspect details. Save a private serial number and copy it from your profile when needed. TRACK PROGRESS PRIVATELY Keep goals, challenges and shareable range recaps connected to your recorded activity. You choose what to share using the app's sharing controls. OPTIONAL ASSISTANT, YOUR OWN AI ACCOUNT Connect an eligible ChatGPT/Codex or Grok account to ask about records and propose profile, range, maintenance, goal or challenge changes. Review and confirm each record change before saving. The Assistant can open app controls for photos, backups, sharing, settings and purchases. These system actions remain under your control. AI is optional. When you explicitly allow requests, your messages and relevant retrieved fields go directly to your chosen provider. Notes sharing is separately controlled. Photos, serial numbers and private inventory notes are excluded from Assistant tools; anything you type into chat is sent as written. Provider eligibility, usage limits and retention policies apply. API-key connections, if selected explicitly, use separately billed API credits with a confirmation before each request. OPTIONAL AUDIO ROUND ESTIMATES Use the microphone to estimate rounds during a session. Nearby shots, echoes and other conditions affect detection. Review and correct the total before saving. Manual entry is always available. YOUR RECORDS, UNDER YOUR CONTROL Records remain on your device unless you choose to export, share or allow optional AI processing. Export backups and restore them when needed. You choose where exported files are stored or shared. FREE AND UNLIMITED One complete firearm profile is free, with all current recordkeeping features. Unlimited removes the profile limit with one payment and no renewal. Apple's price is shown in your local currency before purchase. Restore Purchases is available in Settings. Existing monthly and yearly subscriptions remain supported while active and renew until canceled in Apple Account settings. Canceling renewal keeps access until the paid period ends. A one-time Unlimited purchase does not automatically cancel an existing subscription. One More Gun is a recordkeeping tool. Reminders follow your intervals and do not assess a firearm's physical condition. Audio counts are estimates. Privacy Policy: https://tenxsecurities.com/privacy/ Terms of Use: https://tenxsecurities.com/terms/

Screenshots

GunKoo4 screens
One More Gun4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

GunKoo ships an update every 6 weeks, One More Gun every 3 weeks. The most recent releases landed on October 14, 2026 and October 18, 2026 respectively.

Scorecard4 real differences · 6 level
GunKoo versus One More Gun: the parameters behind the verdict, then further details
ParameterGunKooOne More Gun
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size66 MB27 MB
Age rating12+4+
DeveloperKAI,NING KUOTenXsecurities LLC

In-app purchases

None

GunKoo

No in-app purchases

3 purchases

One More Gun

Subscriptions2
  • Pro Monthly$0.991 Month
  • Pro Annual$9.991 Year
One-time1
  • Pro Founding Lifetime$19.99

Questions

Is GunKoo free?
GunKoo is free to download, with no in-app purchases.
Is One More Gun free?
One More Gun is free to download, with in-app purchases available.
Do GunKoo or One More Gun have ads?
Neither GunKoo nor One More Gun shows ads.
Which is updated more often, GunKoo or One More Gun?
GunKoo ships an update every 6 weeks, and One More Gun every 3 weeks. Most recently, GunKoo was updated on October 14, 2026 and One More Gun on October 18, 2026.

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