SIG BDX vs The DOPE Log Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SIG BDX
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.
- Sync rangefinder with riflescope
- Display illuminated holdover dot
- Measure target distance
- Ballistic data integration
- Connect The Dot™ system
Read full descriptionHide full description
The KILO BDX rangefinders use Applied Ballistics and Bluetooth® to illuminate the exact holdover dot in SIERRA3BDX riflescopes. For the most accurate and ethical shot, just Connect The Dot™. - DOWNLOAD: Download the app - SYNC: Sync the app with your rangefinder - BOND: Use the app to bond the rangefinder with the riflescope - RANGE: Press the RANGE button to measure the distance of your target - POWER SELECTOR RING: When the SIERRA3BDX riflescope is actively paired with a KILO BDX rangefinder, the blue LED on the power selector ring will be illuminated solid blue. This Blue LED will flash quickly 8X for one second whenever the riflescope has received a new holdover reticle update from the rangefinder. The BDX system works out to 800 yards with 1 MOA of accuracy - CONNECT THE DOT™: It’s time for hunting. Once the riflescope is turned on, range the target and the new hold is lit up out to 800 yards
The DOPE Log Pro
Read full descriptionHide full description
# The DOPE Log Pro™ ### Powered by Castleguard Armory The Complete Shooter Operating System™ The DOPE Log Pro™ was built by shooters for shooters. Whether you're a precision rifle competitor, hunter, reloader, firearms enthusiast, or collector, The DOPE Log Pro™ provides the tools needed to organize, track, and manage critical shooting data in one powerful application. Stop relying on notebooks, spreadsheets, screenshots, and multiple apps. Keep your shooting records organized and accessible wherever you go. ## Features ### Ballistic Calculator Generate ballistic solutions using rifle, ammunition, optic, chronograph, and atmospheric data. * Elevation adjustments * Windage corrections * Environmental inputs * Atmospheric calculations * Optic profile integration * Chronograph velocity support ### DOPE Logs Record and manage Data On Previous Engagement (DOPE). * Store verified firing solutions * Track environmental conditions * Save range notes * Organize historical shooting data ### Session Logs Track performance at the range. * Round count tracking * Hit and miss tracking * Accuracy percentages * Environmental data capture * Session notes * Final elevation and windage corrections ### Gun Safe Inventory Organize and manage your collection. Track: * Firearms * Optics * Suppressors * Knives * Ammunition Store: * Photos * Receipts * Supporting documents * NFA paperwork ### Ammo Inventory & Library Manage ammunition inventory and ballistic data. * Ammunition inventory tracking * Bullet profile management * Chronograph velocity records * Local ammunition catalog * UPC barcode scanning ### Optic Profiles Create optic-specific profiles for improved ballistic calculations. * Mount height * Turret adjustment values * Zero distance tracking * Adjustment calculations ### Security & Privacy The DOPE Log Pro™ is designed around a privacy-first approach. * Local-first data storage * PIN protection * User-controlled backups * No cloud account required Your data remains under your control. ### Weather & Location Integration Capture atmospheric conditions directly from your device. * Temperature * Humidity * Pressure * Wind conditions * Elevation * Density altitude calculations ### Subscription Features Upgrade to Pro for expanded capabilities and unlimited access to premium features. Available plans: * Monthly Pro Subscription * Annual Pro Subscription Subscription purchases are managed securely through Apple. ## Built for Shooters The DOPE Log Pro™ is ideal for: * Precision rifle shooters * Long-range shooters * PRS competitors * NRL competitors * Hunters * Reloaders * Firearms collectors * Shooting enthusiasts ## Privacy First The DOPE Log Pro™ is designed to keep your records organized while maintaining control of your information. Firearm records, session logs, inventory data, and supporting documents are intended to remain stored on your device unless you choose to export or back them up. ## Support Need assistance? Visit: https://www.castleguardarmory.com/the-dope-log-support Privacy Policy: https://www.castleguardarmory.com/app-privacy-policy Terms of Service: https://www.castleguardarmory.com/the-dope-log-terms-of-service The DOPE Log Pro™ Powered by Castleguard Armory
Screenshots
Verdict
The clearest difference is in-app purchases: SIG BDX at none against The DOPE Log Pro's 3. The DOPE Log Pro's advantage is update cadence (every 5 days vs every 3 weeks). On price, ads, device support and iOS requirement 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. The DOPE Log Pro sells 3 in-app purchases, starting at $7.99 per month. SIG BDX asks for nothing beyond the download.
SIG BDX ships an update every 3 weeks, The DOPE Log Pro every 5 days. The most recent releases landed on October 22, 2026 and October 6, 2026 respectively.
| Parameter | SIG BDX | The DOPE Log Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (68 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 68 — better | — |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 137 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | Sig Sauer, Inc. | Castleguard Armory LLC |
In-app purchases
SIG BDX
No in-app purchases
The DOPE Log Pro
- Castleguard Armory$7.991 Month
- Castleguard Armory$79.991 Year
- The Dope Log ProFree
Questions
Is SIG BDX free?
Is The DOPE Log Pro free?
Do SIG BDX or The DOPE Log Pro have ads?
Which is updated more often, SIG BDX or The DOPE Log Pro?
Other comparisons















