Comparison

SIG BDX vs HornScore

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Sync rangefinder with riflescope
  • Display illuminated holdover dot
  • Measure target distance
  • Ballistic data integration
  • Connect The Dot™ system
Features
Read 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

About

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.

Highlights
  • 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
Features
Read full description

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

SIG BDX4 screens
HornScore4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

SIG BDX ships an update every 3 weeks, HornScore fortnightly. The most recent releases landed on October 22, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
SIG BDX versus HornScore: the parameters behind the verdict, then further details
ParameterSIG BDXHornScore
PriceFreeFree
Rating3.4 (68 ratings)4.5 (38 ratings) — better
Positive reviews33.3% of reviews93.5% of reviews — better
Number of ratings68 — better38
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better26.0
Further details — not scored
Size137 MB79 MB
Age rating4+9+
DeveloperSig Sauer, Inc.HornScore

Customer experience

SIG BDX

All ratings68 ratings
Positive50.0%
Neutral20.6%
Negative29.4%
Written reviews42 reviews
Positive33.3%
Neutral21.4%
Negative45.2%

HornScore

All ratings38 ratings
Positive86.8%
Neutral0.0%
Negative13.2%
Written reviews31 reviews
Positive93.5%
Neutral0.0%
Negative6.5%

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

None

SIG BDX

No in-app purchases

2 purchases

HornScore

Subscriptions2
  • HornScore Pro (Monthly)$9.991 Month
  • HornScore Pro (Annual)7 Days trial$49.991 Year

Questions

Is SIG BDX free?
SIG BDX is free to download, with no in-app purchases.
Is HornScore free?
HornScore is free to download, with in-app purchases available.
Which has better reviews, SIG BDX or HornScore?
HornScore is rated higher. SIG BDX averages 3.4 out of 5 from 68 ratings, while HornScore averages 4.5 from 38 ratings.
Do SIG BDX or HornScore have ads?
Neither SIG BDX nor HornScore shows ads.
Which is updated more often, SIG BDX or HornScore?
SIG BDX ships an update every 3 weeks, and HornScore fortnightly. Most recently, SIG BDX was updated on October 22, 2026 and HornScore on October 30, 2026.

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