GeoBallistics vs Kdisk
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GeoBallistics
This app provides advanced ballistics calculations for rifle shooting. It allows users to create unlimited rifle profiles, connect with weather hardware for atmospheric data, and build/save satellite imagery range cards. Features include a movers calculator, holdover calculator, and Coriolis effect auto-calculation.
- Unlimited Rifle Profiles
- Atmospheric Data Integration
- Satellite Imagery Range Cards
- Movers Calculator
- Holdover Calculator
- Advanced Ballistics Solver
- Coriolis Effect Auto-Calculation
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About This App: GeoBallistics is a mobile app available for iOS devices and is compatible with Vortex Razor HD 4000 GB and Vortex Relay™ devices. The app allows users the freedom to build and create unlimited rifle profiles, connect with weather-hardware for onsite atmospherics, build/save/export satellite imagery range cards, and more. Key App Features: • Online Rifle Backup • Online Range Card Backup • Match Downloads • Shooting Range Downloads • Movers Calculator • First Ever Holdover calculator • Advanced Ballistics Solver • Comprehensive Bullet Library • Online weather access with station pressure • Free WeatherFlow hardware compatibility • Kestrel LiNK hardware compatibility (PRO version) • Shot-angle calculator • Shot-bearing calculator • Unlimited Rifle Profiles (PRO version) • Ability to save charts to camera roll (PRO version) • Ability to export charts as .csv (PRO version) • Ability to save/load satellite range cards for later use (PRO version) • Muzzle Velocity Truing • Coriolis effect auto-calculated with position and latitude The GeoBallistics mobile app is powered by the BallisticsARC (Ballistics, Atmospherics, and Range Card) solver, and combines the functionality of a ballistics calculator, an atmospheric device, and a GPS rangefinder into one application. The BallisticsARC solver is an advanced 3 DOF solver with provisions for MV vs Temp, Coriolis, spin drift, crosswind jump, moving targets, multiple targets with unique azimuths and angles and much more. GeoBallistics includes 4 modes: HUD Mode, Chart Mode, Map Mode, and Comp Mode. All modes are accessible with 1 custom rifle. In order to add additional rifles and save/export range cards, use Kestrel devices, or backup data online, you must upgrade to the PRO version for a one-time fee. HUD Mode puts everything you need on one screen for a single target. This is also where the moving target feature and max ordinate display is located. Chart Mode is a traditional calculator that allows for a complete solution. Solutions include considerations for gyroscopic drift, Coriolis effect, wind influence, shot angle, atmospheric conditions, and more. Chart Mode also allows FREE integration of the WeatherFlow products. Map Mode allows users to range targets by dropping pins on satellite imagery of a shooting location. Range and solution are displayed by tapping on the target pins. Map Mode also introduces external ballistic data overlays on satellite imagery. These overlays display a bullet's performance along its path according to parameters specified for each rifle profile. Comp Mode allows the user to enter a course of fire with multiple targets with unique variables such as shot angle and shot azimuth. Now features the Holdover Data Zero setting (HDZ) calculator. This is a first-in-class feature that allows you to easily set an optimal zero for holdover stages.
Kdisk
Manage and access your media and documents stored on an iStorage device. Browse photos, videos, and music with thumbnail views, and perform file operations like copying, deleting, and renaming. It also supports document viewing for various popular formats.
- Media thumbnail display
- List/thumbnail view
- File sharing
- Copy, cut, delete, rename files
- Local/iStorage data transfer
- Slideshow mode for photos
- Music playback with artwork
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“Kdisk” is an application software for iStorage device. •The main interface displays Media thumbnails :video, photo, music • Supports list / thumbnail view, support sharing operation for photos, music and documents • Support copy/cut/delete/create/rename operation and support local/iStorage data transmission in /between • Support to play the photos by slideshow mode • Support music artwork shows, repeat mode setting, time line drag operation • Document: Support formats of .keynote、.numbers、.page、.xls/.xlsx, .doc/docx、pdf、txt、ppt/pptx
Screenshots
Verdict
The clearest difference is review sentiment: GeoBallistics at 65% against Kdisk's 15%. GeoBallistics also leads on rating (4.0 vs 1.6) and update cadence (every 9 days vs every 2 months). Kdisk's advantage is in-app purchases (none vs 2) and iOS requirement (9.0 vs 16.0). On price, ratings volume, ads and device support 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. GeoBallistics sells 2 one-off in-app purchases. Kdisk asks for nothing beyond the download.
GeoBallistics holds the better App Store score, 4.0 against 1.6. Both are backed by a comparable volume of ratings — 239 and 109 respectively. Written reviews point the same way: 65% of GeoBallistics's written reviews are positive against 15% of Kdisk's.
GeoBallistics ships an update every 9 days, Kdisk every 2 months. The most recent releases landed on September 25, 2026 and September 20, 2026 respectively.
| Parameter | GeoBallistics | Kdisk |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (239 ratings) — better | 1.6 (109 ratings) |
| Positive reviews | 65.2% of reviews — better | 14.6% of reviews |
| Number of ratings | 239 — better | 109 |
| Update frequency | Every 9 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 113 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | Vortex Optics | 振峰 皮 |
Customer experience
GeoBallistics
Kdisk
User reviews
GeoBallistics
From 239 App Store ratingsWhat we love
- 👍 User-friendly interface
- 🚀 Accurate ballistic solutions
- 💡 Seamless integration with Vortex hardware
- 👍 Helpful customer support
Room to improve
- 🐛 Clunky navigation and UI
- 🐛 Inaccurate windage and elevation solutions
- 🐛 Compatibility issues with dark mode
- 🐛 Crashes and bugs
Kdisk
From 109 App Store ratingsWhat we love
- 👍 Works on iPhone and computer
- 👍 Works for some users
- 👍 Flawless operation for some users
- 👍 Happy with results for some users
Room to improve
- ❌ Does not work with iPhone 15
- ❌ Does not work with iPhone 16 Pro
- ❌ Does not work with iOS 17.2
- ❌ App doesn't recognize card reader
- ❌ Cannot open images/videos
Bugs and requests
GeoBallistics
Reported bugs
3 issues- Unable to edit rifle profiles
- Inability to connect with Vortex rangefinder
- Crashes on launch for some users
Requested features
4 requests- Option to display ballistic charts in inches
- Support for reticles from other manufacturers
- Downloadable offline map data
- Apple Watch companion app
Kdisk
Reported bugs
14 issues- App doesn't recognize the card reader
- Cannot open images/videos
- Limited file access (only recent 499 photos)
- No pictures show up on the card
- App crashes frequently
Show 9 moreShow fewer
- Connection drops intermittently
- Does not delete pictures accurately
- Lags out during use
- Corrupts SD cards after a few uses
- Preview images are not accurate
- App crashes before loading content
- Device not recognized when plugged in
- Functionality buttons (3 dots) missing
- App doesn't ask for access on iPad
Requested features
10 requests- Fix the issue with dropping connection
- Resolve compatibility issues with newer iPhones (15, 16 Pro)
- Address iOS 17.2 compatibility
- Improve file access limitations
- Ensure accurate deletion of pictures
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- Fix preview image functionality
- Add an 'eject' tab for SD cards
- Resolve issues with SD card corruption
- Ensure app functions correctly in field conditions
- Make the app more user-friendly for transferring files
In-app purchases
GeoBallistics
- WINDmeter CompatibilityFree
- BallisticARC PRO$14.99
Kdisk
No in-app purchases








