# SIG BDX

> SIG Ballistic Data Xchange

Canonical page: [https://chrome-stats.com/d/id1403025894](https://chrome-stats.com/d/id1403025894)

## Overview

- **ID:** `id1403025894`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Sig Sauer, Inc.
- **Category:** Sports
- **Rating:** 3.40 / 5 (68 ratings)
- **Version:** 462
- **Last updated:** 2026-07-01
- **First published:** 2018-08-05
- **Size:** 135 MB
- **Data as of:** 2026-09-13
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/sig-bdx/id1403025894)
- **Website:** [https://www.sigsauer.com/products/electro-optics/bdx/](https://www.sigsauer.com/products/electro-optics/bdx/)
- **Privacy policy:** [https://www.sigsauer.com/privacy-policy/](https://www.sigsauer.com/privacy-policy/)

## Description

SIG BDX Chrome extension enables seamless Ballistic Data Xchange between KILO BDX rangefinders and SIERRA3BDX riflescopes via Bluetooth, illuminating the exact holdover dot for precise shooting. Follow the Connect The Dot workflow to access the data you need for ethical, accurate shots.

Workflow essentials: DOWNLOAD the app, SYNC with your rangefinder, BOND the devices, and RANGE to measure distance. The blue LED on the scope’s power selector ring indicates updates, and the system supports approx. 800 yards at ~1 MOA accuracy.

## Rankings

- #174,673 — Overall

## Review summary

Users praise SIG BDX for solid hardware integration and ease of use, with accurate rangefinding and practical field usefulness. However, repeated issues include a ballistic calculator limited to ~800 yards, with few atmospheric inputs and missing scope height, barometric pressure, and humidity; unreliable Bluetooth pairing/discovery; slow streaming and readability problems; bugs like export mismatches and opaque firmware notes; and sparse updates for new calibers alongside mixed support. DRM-style reconnection requirements also affect reliability. Many users want Apple Watch support and more proactive updates to fully unlock the system's potential.

### Pros

- Easy to use and versatile once learned.
- Accurate rangefinder integration with SIG BDX hardware and dependable ballistic solution.
- Solid Bluetooth setup and quick syncing with the rangefinder/scopes.
- Good hardware performance for hunting/target practice.

### Cons

- Ballistic calculator limits: about 800 yards max, with limited atmospheric inputs (only temp and altitude); missing barometric pressure, humidity, and scope height; many calibers unsupported.
- Bluetooth connectivity and pairing instability (discovery issues, occasional crashes).
- Performance/UX issues: slow live streaming, latency, hard-to-read UI (fonts/colors), and bugs like export mismatch.
- Sparse updates and weaker support for new calibers; some reports say the app isn’t actively maintained.
- DRM-style access requires periodic reconnection (every 60 days), reducing reliability.

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1403025894)