Answers, straight.

Strelok Pro is available now on iPhone, iPad, and Android phones and tablets. Native macOS and Windows desktop apps are in development and coming soon — see the download page for the full lineup.

The desktop apps are actively being built on the same ballistic engine as mobile, with the Windows engine golden-file tested for numerical parity. They're not released yet. Leave your email on the contact page and we'll tell you the moment they ship.

Yes. Strelok Pro is one product across platforms — your rifle and load profiles sync, and a single Pro / Pro+ subscription carries over. When the desktop apps launch, your existing data and entitlement come with you.

The ballistic solver, your saved profiles, the ballistic table, and the reticle library all work fully offline — the core solver ships inside the app. Range AI needs connectivity since it runs in the cloud, and fair rate limits apply.

G1 and G7 drag models, both MOA and Mil for holds, and imperial or metric throughout. Strelok also models spin drift and Coriolis, and can read elevation from the barometer and latitude via GPS. New to BC? Read G1 vs G7.

The solver is a high-fidelity model with environmental corrections, spin drift, and Coriolis. Real-world accuracy depends on your inputs — especially muzzle velocity and BC. For best results, true your data against actual impacts; our guide Zero It, Then True It walks through it.

Range AI is a natural-language assistant. Open the AI tab and ask in plain English — it uses your current load and conditions to recommend holds, suggest loads, explain ballistics, and troubleshoot accuracy issues. Range AI requires a Pro+ subscription after the first free response.

You can download and use the core calculator for free, including up to three saved rifle profiles. Pro unlocks unlimited profiles and the full feature set; Pro+ adds the Range AI assistant. A 7-day free trial is available, and a one-time Lifetime option covers the app's non-AI features. Exact pricing is shown in-app and may vary by region.

Subscriptions are billed through your App Store or Google Play account. Manage or cancel anytime from your device's subscription settings — on iOS via Settings → your name → Subscriptions, and on Android via the Play Store → Subscriptions.

You can request account and data deletion at any time. See the delete account page for the steps, or email us and we'll handle it. Details on what we store are in our Privacy Policy.

Factory load specs are sourced from SAAMI and CIP. Drag models and bullet data come from open ballistic datasets. Environmental corrections are pulled live from your device's barometer and GPS rather than estimated.

Delta Metrics — an applied software team building precision tools. We respond to support directly; reach us through the contact page.