A full ballistic calculator — free
Built on a point-mass engine with G1 and G7 drag, validated against published data.
Zero Advisor + MPBR
Pick your cartridge and target size; get the recommended zero distance and your maximum point-blank range.
Drop & DOPE
Full drop table in MOA, MIL, inches or cm, a trajectory chart, and a reticle holdover view for any range.
Wind, G7 & long range
Wind drift and holds, switchable G1/G7 drag with custom BCs, plus spin drift and Coriolis for the far stuff.
Dial-In & True-Up
Turn a group's miss into exact clicks, and true your muzzle velocity and BC to your rifle's real drops.
Rangefinder & reticles
Mil/MOA reticle ranging, a camera distance estimator, and a reticle library (mil-dot, tree, MOA, BDC).
Target Cam
Photograph your target, tap the shots, and get group size, MOA and the correction to center it — then save it.
Live conditions
Pull altitude, temperature, humidity and wind from your location; correct velocity for powder temperature.
Cards, sync & more
Printable/PDF DOPE cards, metric or imperial units, rifle profiles & My Loads, and Pro cloud sync across devices.
Sighted-in in four steps
From a cold barrel to a confirmed zero.
Set your load
Choose a cartridge or enter velocity, BC, bullet weight and sight height.
Get a zero
Pick your target zone; AHL Sights gives the zero and max point-blank range.
Correct the group
Shoot, enter the miss, dial the clicks it tells you.
Confirm & save
Measure the group from a photo and save the capture to your log.
AHL Sights Pro
The whole app is free. Pro adds cloud sync so your rifles and loads follow you everywhere.
No subscription. Buy once, use on every device.
- Cloud sync across all your devices
- Your rifle profiles, My Loads, sessions & settings, everywhere
- Restore instantly on a new phone
- Supports an independent, ad-light app
Already bought? Enter your key under Data → AHL Sights Pro in the app.
Always free
Zero & MPBR · drop & DOPE · wind, G7, spin drift & Coriolis · dial-in · reticle library · rangefinder · velocity true-up · camera group analysis · printable DOPE cards · metric or imperial. No account needed.
Open the free app →Guides
New to sighting in, or brushing up? Start here.
Cartridge comparison tool →
Compare cartridges side by side at true relative size, with full specs.
Anatomy of a cartridge →
Bullet, case, powder & primer — every part of a round explained.
Understanding scopes & gear →
Scope parts, types, cartridges, rangefinders, targets & terms.
How to sight in a rifle →
The full step-by-step, from bore sight to confirmed zero.
Maximum Point-Blank Range →
Aim dead-on across a wide band of distances.
MOA vs MIL →
Read your turrets and reticle without the math.
Wind, spin drift & Coriolis →
What moves your bullet sideways at long range.
Install AHL Sights
Add it to your home screen and it runs full-screen and offline, like a native app.
- Tap Share ⬆︎.
- Choose Add to Home Screen.
- Tap Add.
- Tap the ⋮ menu.
- Choose Add to Home screen / Install app.
- Confirm.