# SBC vs Kdisk

The clearest difference is rating: SBC at 4.5 against Kdisk's 1.6. SBC also leads on review sentiment (31% vs 15%) and ratings volume (1.6K vs 112). Kdisk's advantage is in-app purchases (none vs 1). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SBC sells 1 in-app purchase, starting at $2.99 per month. Kdisk asks for nothing beyond the download.

SBC holds the better App Store score, 4.5 against 1.6. That said, the two scores are not equally well evidenced: SBC has 1.6K ratings behind it against 112, so its average is the more settled of the two. Written reviews point the same way: 31% of SBC's written reviews are positive against 15% of Kdisk's.

SBC ships an update monthly, Kdisk every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | SBC | Kdisk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (1.6K ratings)](https://appshunter.io/ios/app/sbc-ballistic-calculator-app/id1026883819/reviews)** | [1.6 (112 ratings)](https://appshunter.io/ios/app/kdisk/id1489952347/reviews) |
| Number of ratings | **1.6K** | 112 |
| Positive reviews | **30.8% of reviews** | 14.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Subscription | **Free** |
| Size | 11 MB | 94 MB |
| Requires iOS | 9.0 | 9.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Vitalii Gryniuk](https://appshunter.io/developer/1007630419) | [振峰 皮](https://appshunter.io/developer/1479286012) |

## What reviewers say

### SBC

[App page](https://appshunter.io/ios/app/sbc-ballistic-calculator-app/id1026883819)

This app calculates precise ballistic data for long-range shooting, assisting shooters with holdovers and scope settings. It supports various units and reticle types, and is available on iPhone, iPad, and Apple Watch.

**Highlights:** Accurate ballistic calculations, Imperial and Metric units, Elevation adjustments (Mil-MRAD, MOA, click), Range cards and bullet lists, Reticle support (FFP, SFP), Coriolis correction

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Month | $2.99 | per month |

**What reviewers like**

- 🚀 Easy to use
- 👍 Intuitive layout
- 💡 Useful features like GPS and target selection
- 🎯 Accurate ballistic calculations
- 🔍 Extensive ammo and scope library

**What reviewers complain about**

- 🐛 Constant crashes and app failures
- 🔒 Subscription required to access full functionality
- 🔍 Limited scope and reticle options
- 🔢 Inability to change drag model from G1
- 💾 Loss of saved data when reinstalling app

**Reported bugs**

- App crashes on startup
- Weather data not updating properly
- Incorrect reticle subtensions
- Issues with data input and saving

**Requested features**

- Add G7 drag model support
- Sync data between devices
- Integrate with weather sensors like Kestrel
- Improve Apple Watch app functionality
- Expand scope and reticle database


### Kdisk

[App page](https://appshunter.io/ios/app/kdisk/id1489952347)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Works on iPhone and computer
- 👍 Works for some users
- 👍 Flawless operation for some users
- 👍 Happy with results for some users

**What reviewers complain about**

- ❌ 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

**Reported bugs**

- 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

**Requested features**

- 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


## Frequently asked questions

### Is SBC free?

SBC is free to download, with in-app purchases available.

### Is Kdisk free?

Kdisk is free to download, with no in-app purchases.

### Which has better reviews, SBC or Kdisk?

SBC is rated higher. SBC averages 4.5 out of 5 from 1.6K ratings, while Kdisk averages 1.6 from 112 ratings.

### Do SBC or Kdisk have ads?

Neither SBC nor Kdisk shows ads.

### Which is updated more often, SBC or Kdisk?

SBC ships an update monthly, and Kdisk every 2 months. Most recently, SBC was updated on November 1, 2026 and Kdisk on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*