Shooting Target Scorer

Content rating
Mature 17+
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Content rating
Mature 17+
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About this app

Photograph the target when the relay is over, or point the camera at it while you shoot. STS finds every hole, measures it against the ring geometry of the competition target you selected, and scores it under the rules of the match you are shooting. You get the total, the shot-by-shot breakdown, the shape of your group, and the sight correction that would put the next group in the middle.

HOW IT WORKS
- Pick course of fire: target face and distance follow from it
- Tap four corners of a card, which tying pixels to millimeters
- Score from a photo or live from camera as string builds

WHAT YOU GET
- Value for every shot and subtotal for every series
- Distribution histogram: how many tens, how many nines, etc.
- Group center, extreme spread, mean radius, R50
- Separate horizontal/vertical dispersion, in millimeters/MOA/MILS
- Sight correction in clicks for scope/red-dot/match-diopter
- Plain-text report and a CSV you can send to a coach

DISCIPLINES
- Air rifle and air pistol at 10 m.
- Rimfire rifle and pistol at 25 m and 50 m.
- Centrefire rifle in .223, .308 and 6.5 mm , out to 1000 yards.
- Practical pistol.

21 COMPETITION TARGETS
- ISSF 10 m air rifle and air pistol, 50 m rifle
- 25 and 50 m precision pistol
- 25 m rapid fire, 300 m rifle
- NRA and CMP high power and smallbore
- F-Class at 600 and 1000 yards
- German DSB and BDS faces
- IPSC and IDPA; steel plates.
Add your own from a photograph.

RULES:
- ISSF qualification and finals
- NRA National Match Course
- NRA smallbore prone
- CMP Games
- F-Class
- NRL22 and PRS stages
- IPSC hit factor
- IDPA time-plus-penalty
- PZSS classification courses
- DSB and BDS including Auflage
Free training modes with no shot or time limit

BUILT-IN EQUIPMENT CATALOGUES:
- 37 firearms from match air guns to F-TR rifles
- 31 loads from match pellets to .308 match ammunition
- 19 sights covering scopes, red dots and match diopters
Profile sets move between STS and VTB Vapor-Trail Ballistics.

CAMERAS / FEEDS:
- Phone built-in camera
- Action camera
- MJPEG stream from a down range
- RTSP stream from a digital scope

NOTES:
STS is a training and practice aid. Official results are decided by the jury under the rulebook in force. ISSF target dimensions come from the published tables; the American, F-Class, practical and national-federation figures are the commonly published ones, are marked in the app as needing a check, and are all editable. The detector cannot see a shot that missed the target altogether. It can be fooled: every hole can be corrected by hand, and doubtful ones are flagged rather than quietly counted.

PRIVACY
Everything happens on the device. No account, no sign-in, no upload, no analytics, no advertising. Your photographs and your scores stay on your phone.

SAFETY
Operate the app only from behind the firing line, with the firearm made safe and the range in a condition the range officer permits.

FINAL NOTE:
This application is still in active development and there are chances that it may mis-behave and produce wrong results. Please bear with us to go though the hurdles to produce the final version. You are certainly welcomed to provide comments, suggestions and error reports.
Updated on
Jul 30, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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What’s new

This revision includes several corrections to user interface, improves hole detection on both images and live camera images of real shooting targets, extends also the catalogues of firearms, ammunition and shooting targets.

NOTE: this application is still in ongoing development. Hence it may exhibit occasionally unexpected behaviors, not recognize targets or miss some hits.
Content rating
Mature 17+
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App support

About the developer
RESEARCH FOR SCIENCE, ART AND TECHNOLOGY (RFSAT) LIMITED
artur.krukowski@rfsat.com
The Black Church St Marys Place North, Dublin 7 Dublin D07 P4AX Ireland
+30 697 798 9028

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