SIG BDX vs HornScore
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
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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
HornScore
This app transforms your phone into a professional field judging and scoring tool for hunting. It offers features to compare animals to a library of real scored specimens, calculate detailed measurements, and estimate scores from photos. It also includes community features for sharing and guessing scores.
- Field judging and scoring tool
- Compare animals to a library
- Detailed scoring calculator
- Estimate scores from photos
- Offline access to guides and data
- Community feed and direct messaging
- Boone & Crockett and SCI systems
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Field judge like a pro. HornScore turns your iPhone into a scoring tool. Whether you're glassing a bull at 400 yards or green-scoring a buck on the tailgate, HornScore gives you the numbers — and shows you exactly where they came from. Version 2.0 is a complete, ground-up rebuild. Native. Fast. Designed for iOS 26. THE FIELD JUDGING SUITE HORNMATCH — Compare to real animals. The fastest way to judge an animal is to put it next to one you already know. HornMatch searches real scored animals — your own, the curated HornScore Library, and the community — and lets you filter down by score, total points, mass, age, and rack configuration until you find the match. Save your estimate as a range, or carry the comparable's measurements into the calculator and refine from there. HORNCALC — Break down every number. A full scoring calculator with live net-score computation, typical and non-typical racks, bilateral measurements, and deductions you can actually see. Species guides and anatomical references are one tap away, without leaving your score. Pull a reference animal up side by side and copy its values in. HORNTRACE — Measure straight from a photo. Set your scale against an anatomical reference of known length, trace the measurement on your photo, and get an estimate. A guided walkthrough gets you through your first one fast. SCORE ANYTHING, ANYWHERE - Boone & Crockett and SCI scoring systems - Harvest scoring with full measurement breakdowns - Field estimates when you don't have hands on the animal - Drafts that resume exactly where you left off - Edit any score, any time, without starting over - Rescore any animal you see WORKS WITHOUT SERVICE Because the backcountry doesn't have LTE. Species guides, measurement diagrams, your own scores, and the curated HornScore Library all live on your phone. Downloads sync themselves — and you control exactly what's on your device, species by species, from a single screen. THE COMMUNITY - A feed of real animals with real scores - Direct messages with the hunters you follow - Guess the Score — post your animal, hide the number, let people take their shot - Follow, comment, and discover verified hunters - Branded, full-resolution score cards built for sharing HORNSCORE PRO Unlock the complete Field Judging suite — HornMatch, HornCalc, and HornTrace — plus advanced rescoring, advanced filtering, and detailed measurement breakdowns on every public score. Monthly and annual plans, with a free trial for new members. Download HornScore and score your next one right. Terms of Service: https://hornscore.com/terms Privacy Policy: https://hornscore.com/privacy
Screenshots
Verdict
The clearest difference is review sentiment: HornScore at 94% against SIG BDX's 33%. HornScore also leads on rating (4.5 vs 3.4). SIG BDX's advantage is in-app purchases (none vs 2) and iOS requirement (16.0 vs 26.0). On price, ratings volume, update cadence and ads 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. HornScore sells 2 in-app purchases, starting at $9.99 per month. SIG BDX asks for nothing beyond the download.
HornScore holds the better App Store score, 4.5 against 3.4. Both are backed by a comparable volume of ratings — 68 and 38 respectively. Written reviews point the same way: 33% of SIG BDX's written reviews are positive against 94% of HornScore's.
SIG BDX ships an update every 3 weeks, HornScore fortnightly. The most recent releases landed on October 22, 2026 and October 30, 2026 respectively.
| Parameter | SIG BDX | HornScore |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (68 ratings) | 4.5 (38 ratings) — better |
| Positive reviews | 33.3% of reviews | 93.5% of reviews — better |
| Number of ratings | 68 — better | 38 |
| Update frequency | Every 3 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 137 MB | 79 MB |
| Age rating | 4+ | 9+ |
| Developer | Sig Sauer, Inc. | HornScore |
Customer experience
SIG BDX
HornScore
Bugs and requests
SIG BDX
Not enough reviews yet to summarise bugs or requests.
HornScore
Reported bugs
1 issue- Inaccurate measurements for certain animals
Requested features
2 requests- Automatic measurement and scoring
- More detailed data on main beam and mass
In-app purchases
SIG BDX
No in-app purchases
HornScore
- HornScore Pro (Monthly)$9.991 Month
- HornScore Pro (Annual)7 Days trial$49.991 Year









