# BulletDrop+ vs SIG BDX

The clearest difference is rating: BulletDrop+ at 3.9 against SIG BDX's 3.4. BulletDrop+ also leads on review sentiment (51% vs 33%) and iOS requirement (13.0 vs 16.0). SIG BDX's advantage is in-app purchases (none vs 6) and update cadence (every 3 weeks vs every 4 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. BulletDrop+ sells 6 one-off in-app purchases. SIG BDX asks for nothing beyond the download.

BulletDrop+ holds the better App Store score, 3.9 against 3.4. Both are backed by a comparable volume of ratings — 76 and 68 respectively. Written reviews point the same way: 51% of BulletDrop+'s written reviews are positive against 33% of SIG BDX's.

BulletDrop+ ships an update every 4 months, SIG BDX every 3 weeks. The most recent releases landed on October 13, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | BulletDrop+ | SIG BDX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (76 ratings)](https://appshunter.io/ios/app/bulletdrop-plus/id477251194/reviews)** | [3.4 (68 ratings)](https://appshunter.io/ios/app/sig-bdx/id1403025894/reviews) |
| Number of ratings | **76** | 68 |
| Positive reviews | **51.4% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 2 MB | 137 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mark Descalzo](https://appshunter.io/developer/413617628) | [Sig Sauer, Inc.](https://appshunter.io/developer/1114396362) |

## What reviewers say

### BulletDrop+

[App page](https://appshunter.io/ios/app/bulletdrop-plus/id477251194)

Calculate bullet trajectory, energy, and drift with precise inputs. Store custom loads, fetch weather data, and choose output units for accurate shooting predictions. Ideal for handloaders and shooters to understand cartridge performance.

**Highlights:** External ballistics calculation, iCloud support for load data, Store commonly used datasets, Selectable drag function, Selectable output units (inches, MOA, mils), Fetch weather conditions

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chocolate Bar | $0.99 | one-time |
| Cup of Coffee | $1.99 | one-time |
| Doughnut | $2.99 | one-time |
| Coffee-themed Beverage | $4.99 | one-time |
| Bag of Coffee | $14.99 | one-time |
| Sack of Coffee | $29.99 | one-time |


### SIG BDX

[App page](https://appshunter.io/ios/app/sig-bdx/id1403025894)

This application connects a rangefinder to a riflescope, displaying an illuminated holdover dot for precise aiming. It facilitates syncing devices and provides ballistic data for accurate shots up to 800 yards.

**Highlights:** Sync rangefinder with riflescope, Display illuminated holdover dot, Measure target distance, Ballistic data integration, Connect The Dot™ system

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BulletDrop+ free?

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

### Is SIG BDX free?

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

### Which has better reviews, BulletDrop+ or SIG BDX?

BulletDrop+ is rated higher. BulletDrop+ averages 3.9 out of 5 from 76 ratings, while SIG BDX averages 3.4 from 68 ratings.

### Do BulletDrop+ or SIG BDX have ads?

Neither BulletDrop+ nor SIG BDX shows ads.

### Which is updated more often, BulletDrop+ or SIG BDX?

BulletDrop+ ships an update every 4 months, and SIG BDX every 3 weeks. Most recently, BulletDrop+ was updated on October 13, 2026 and SIG BDX on October 16, 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.*