If you’ve recently upgraded your phone, you probably discovered a massive problem: Strelok Pro is gone. You went to the App Store or Google Play to download the ballistic calculator you’ve relied on for years, only to find it completely wiped from the platform.
Because of U.S. sanctions against Russia (where Strelok’s developer is based), the app was removed from all major app stores. If you didn’t back up your phone perfectly, you lost your rifle profiles, your custom drag models, and your truing data. It isn’t coming back.
You need a new ballistic calculator. One that handles custom drag models, factors in complex atmospherics, and doesn’t require a master’s degree to operate. Here is a breakdown of the best Strelok Pro alternatives on the market right now, and how to choose the right one for your setup.
What Made Strelok Great (And What You Need in a Replacement)

Before looking at replacements, we have to look at why shooters loved Strelok in the first place. Strelok Pro wasn’t just popular because it was cheap; it worked. It offered:
- Massive Bullet Databases: You didn’t have to manually input G1/G7 BCs for every bullet.
- Easy Truing: The ability to true your muzzle velocity and drop at distance was intuitive.
- Environmental Inputs: It handled density altitude, temperature, and pressure easily.
- Reticle Views: It had a massive library of specific scope reticles, showing exactly where your holdovers were.
Any serious alternative needs to match or exceed these capabilities. The problem with legacy apps is that they tied your data to a single physical device—which is exactly why thousands of shooters lost their data when Strelok was banned. A modern replacement needs to be cloud-based.

The Top Strelok Pro Alternatives for 2026
1. Trajek (The Top Pick)
If you want the closest modern successor to Strelok Pro without the massive learning curve, Trajek is the answer.
The biggest flaw with Strelok was that your data lived on your phone. If the phone died or the app was banned, you were back to zero. Trajek solves this by being a fully cross-platform, cloud-based ballistic engine. You can build your rifle profiles on your desktop at home, and they instantly sync to your phone at the range.
Why it wins for Strelok users:
- No Data Loss: Because it’s cloud-backed, you will never lose your rifle profiles or truing data if you break your phone or switch from Apple to Android.
- Speed: The interface is built for the firing line. It calculates firing solutions instantly without making you dig through five sub-menus.
- Cost-Effective: It provides the accuracy of a high-end hardware solver without forcing you to buy a $700 weather meter.
- Integrated Bullet Database: It ties directly into our comprehensive bullet database, pulling accurate BCs and weights instantly.
2. Applied Ballistics (The Heavyweight)
Applied Ballistics (AB) is the industry standard for extreme long-range shooting, but it comes with a steep learning curve and a high price tag.
- Pros: AB is incredibly accurate. It utilizes Custom Drag Models (CDMs) measured via Doppler radar, which is more precise than using standard G1 or G7 ballistic coefficients. It also integrates seamlessly with hardware like the Kestrel 5700 Elite.
- Cons: It is notorious for having a complex, clunky user interface. A common complaint from former Strelok users is that AB is “over-engineered” for the average shooter. Between the app costs (around $30 for legacy versions or subscription tiers for Quantum) and the hardware integration, it is an expensive ecosystem to buy into. It is overkill for 95% of shooters.
3. Hornady 4DOF (The Free Option)
Hornady’s 4DOF (Four Degrees of Freedom) app takes a different mathematical approach. Instead of using traditional Ballistic Coefficients, it uses aerodynamic drag modeling based on the bullet’s exact shape and mass.
- Pros: It is completely free. For supported bullets, the solver is highly accurate, especially at extended ranges where standard BCs begin to fail.
- Cons: You are largely locked into their ecosystem. While Hornady has added other manufacturers to their database, if you shoot a wildcat cartridge or a boutique bullet that isn’t in their library, the app is virtually useless to you.
4. GeoBallistics / Shooter (The Legacy Apps)
Apps like GeoBallistics (formerly BallisticsARC) and Shooter have been around for a long time and still have a loyal following.
- Pros: They are relatively inexpensive (GeoBallistics is around $15 for the Pro unlock, or free if you buy specific Vortex optics) and they get the job done for basic MOA and MRAD drop charts.
- Cons: They are showing their age. They lack the modern UI, seamless cloud syncing, and rapid calculation speeds of newer platforms like Trajek. They are good calculators, but they feel like software from 2015.
The Reticle Problem: Addressing the Elephant in the Room

If you browse the shooting forums, the number one complaint about losing Strelok is losing the visual reticle database. Strelok allowed you to select your exact scope (e.g., a Vortex EBR-7C or Nightforce MIL-XT) and it would overlay your holdovers onto a cartoon image of your reticle.
Here is the hard truth: You need to stop relying on cartoon reticles.
Relying on a visual overlay creates a crutch. If you change scopes, or if an app doesn’t have your specific reticle, you are lost. Instead of looking for an app with a picture of your scope, use Trajek to generate raw MRAD or MOA data.
Learn to read your firing solution (e.g., U 4.2 MRAD, R 0.6 MRAD) and apply it directly to your turrets or your reticle’s subtensions. It is faster, it works with literally every optic on the planet, and it makes you a fundamentally better shooter.
How to Transition Your Data from Strelok
If you still have Strelok running on an old device, do not throw it in a drawer until you have extracted your data. Here is the practical way to move your profiles to Trajek:
- Record Your Hard Data: Open Strelok and write down your exact Muzzle Velocity, Zero Range, Sight Height, and Twist Rate for each rifle.
- Note Your Truing Data: If you trued your velocity at distance, write down the exact environmental conditions (Temp, Pressure, DA) present on the day you trued it.
- Input to Trajek: Create an account on Trajek. Input your base rifle data. Because Trajek uses a modern aerodynamic solver, you may notice slight variations in your drop chart compared to Strelok. This is normal.
- Re-True: Take your rifle to the range, shoot it at distance (preferably 600+ yards), and input your actual drop into the Trajek truing feature. Your new profile is now locked in and backed up to the cloud forever.
Stop Relying on Dead Software
Strelok was a fantastic tool, but the ban forced the industry to evolve. Keeping an old phone alive just to run an unsupported, outdated application is a recipe for disaster at your next match or hunt.
Stop relying on dead software. Move your data to a modern, cloud-backed ballistic engine. [Set up your rifle profiles in Trajek today] and get back to shooting.
Frequently Asked Questions
AJ Deysel is a competitive rifle shooter in the PRS and NRL Hunter series, a lifelong hunter, and a recognized ballistics specialist whose load development expertise has been featured by industry leaders like Hornady. He is the founder and lead editor of LoadDevelopment.com. Read more about AJ or view our Editorial & Testing Guidelines.
