Atlas Ballistics vs Applied Ballistics
AB Quantum is the most established name in ballistic solvers, with Doppler-measured drag models and an ecosystem of 50+ devices behind it. Atlas is faster to run and covers more of the range day. Here is the real difference.
The short answer
Choose AB Quantum if
AB Quantum if your kit is already built around AB-powered hardware — Kestrel, Garmin, Bushnell, SIG BDX — or you specifically want their Doppler radar Custom Drag Models, WEZ hit-probability analysis and reticle library.
Choose Atlas if
Atlas if you want a solution in seconds without a manual, every load nested under the rifle it belongs to, and your stage cards, group analysis, shot log and impact spotting living in the same app as the solver.
Side by side
| Feature | Atlas | AB Quantum |
|---|---|---|
| Platforms | iPhone, iPad, Mac, Apple Watch, Android | iOS, Android |
| Solver | Point-mass, RK4 integration, G1/G7 | Point-mass solver, G1/G7 plus Doppler-measured Custom Drag Models |
| Drag model calibration | Truing — corrects MV or BC from a real impact | Truing, plus Custom Drag Factor calibration of their CDMs |
| Hit probability analysis (WEZ) | Not yet | Yes — Weapon Employment Zone analysis |
| Reticle library | 175 reticles, 22 brands, mapped to 153 scope models | Yes — larger list, online and auto-updating |
| Holds drawn on your reticle | Yes | Yes |
| Apple Watch | Yes — capture shot direction from the wrist | Not listed |
| In-app AI help | Ammo box scanner reads labels for you | AB Spotter — AI trained on their ballistics library |
| Loads nested under each rifle | Yes — unlimited per rifle | Flat profile list (their reply cites device-sync compatibility) |
| Ammo box AI scanner | Yes | Not listed |
| Shot group analysis from a photo | Yes — group size in MOA, mil, inches | Not listed |
| Multi-target cards | Stage cards, with timed runs on a clock | Target cards and Group Sectors, no timer listed |
| Shot log with photos | Yes | Not listed |
| Impact spotting through your own scope | Yes — phone-to-phone, with rewind | Not listed |
| Longest-shot leaderboard | Yes | Not listed |
| Range off satellite map | Yes | Not listed |
| Hunting maps | Atlas Hunt, in development | Not listed |
| Chronograph over Bluetooth | Not yet — enter or true from measured MV | Yes — Garmin Xero, Optex SpeedTracker |
| Bluetooth devices | Kestrel 5700 | 50+ AB-enabled devices |
| Cloud profile backup | Yes | Yes — AB Quantum Sync |
| Pricing | Free; Pro $5.99/mo or $49.99/yr | Free download with subscription license tiers |
Feature and pricing data collected August 2026 from each product’s own listing. Things change — check the source links below before deciding.
Where Atlas is different
Every load lives under its rifle
This is the difference shooters feel on day one. In Atlas a rifle holds the mechanical truth — zero, twist, sight height, click value — and you hang as many ammo profiles off it as you want. Match load, hunting load, the three test loads you are working up. One tap to switch, nothing to re-enter. AB Quantum keeps profiles in a single flat list, which their own developer replies attribute to keeping profiles syncable to AB devices; nested profiles cannot be pushed to their hardware.
Seconds to a solution, not a study session
AB Quantum ships a 50-plus-page user manual, a tutorial playlist and an in-app AI assistant to help you operate it. That depth is real, and so is the learning curve behind it. Atlas is built to be opened cold: pick the rifle, pick the load, set the range, dial. No manual, and nothing buried three screens deep.
The whole range day, not just the firing solution
Photograph your target and get true group MOA. Build a stage card per position, then run it against a beep with hit/miss tracking and a saved time. Log the shot with the group, the chrono velocity, the load data and a photo. Clamp a phone to your spotting scope and watch your own impacts with rewind and automatic hit flagging. As of August 2026, AB Quantum lists none of those.
Trued to your barrel, judged on your steel
Fire one confirmed shot, tell Atlas where it actually landed, and it reverse-solves your true muzzle velocity or BC. Every solve after that runs on what your rifle does, not what the box claims. AB reaches the same goal from the other end, with radar-measured drag curves and CDF calibration. Different roads; the steel decides.
Where AB Quantum has the edge
Straight answers — a comparison you can't trust is worthless.
Their drag data is measured, not modeled
Applied Ballistics runs a mobile Doppler radar lab and has built Custom Drag Models for thousands of projectiles from live measurement, with Bryan Litz behind the science and years of published work under it. That library is genuinely unmatched, and for a shooter who wants measured drag data rather than a standard curve trued to their own impacts, it is the reason to choose them.
WEZ has no equivalent in Atlas
Weapon Employment Zone analysis uses Monte Carlo simulation to put an actual hit-probability percentage on a target at a given range, given your system's real uncertainties. It is a serious analytical tool, it is legitimately theirs, and Atlas has nothing like it today.
Their reticle list is longer
Both apps draw your holds on your actual reticle. Atlas ships 175 reticles across 22 brands, mapped to 153 scope models, every one built from published subtension data — we do not interpolate tree rows we have not verified, which is slower but means the reticle on your screen matches the glass. AB's published list is longer and updates over the air. If your scope is obscure, check both lists before you decide.
Chronograph pairing over Bluetooth
AB Quantum connects to Bluetooth chronographs like the Garmin Xero and writes measured velocity straight into your profile. Atlas does not yet — you enter your measured MV, or true from a real impact.
The device ecosystem
Their solver connects to 50+ Bluetooth devices and is embedded inside Kestrel meters, Garmin units, Bushnell rangefinders and SIG BDX optics. Atlas pairs with the Kestrel 5700 today.
Questions people ask
Which one is more accurate?
Here is the level answer. Both run the same class of physics — a point-mass trajectory solve with full atmospherics, spin drift and Coriolis. AB layers Doppler-measured Custom Drag Models on top of that; Atlas layers truing against your own confirmed impacts on top of standard G1/G7 models. Neither approach is a shortcut, and no drag measurement in any library was taken from your barrel, at your altitude, on your day. Run both at distance and keep whichever matches your hits. We are comfortable with that test.
Is Atlas easier to use than AB Quantum?
That is the specific thing Atlas was built for, and AB Quantum's own App Store reviews split hard on it — some shooters praise the depth, others report a UI they fight with. Rather than take our word for it, download both. They are both free to try, and an hour with each will tell you more than any page will.
Can I use both?
Plenty of shooters do, and there is no lock-in either way. Running them side by side at distance is genuinely the most useful thing you can do.
What does Atlas cost compared to AB Quantum?
Atlas is free to download and free to use, with Pro at $5.99/month or $49.99/year. There is a free plan and a free trial of Pro. AB Quantum is also a free download, with subscription license tiers that unlock features and device support; check their listing for current pricing.
Does Atlas work offline like AB?
Yes. The full solver runs on your device, so it opens and solves with zero bars. Only the ammo box scanner and automatic weather need a connection.
The only test that matters is your steel
Run Atlas against what you use now — free to download, with a free plan and a free trial of Atlas Pro.
Sources
Applied Ballistics is a trademark of Applied Ballistics, LLC. This page is not affiliated with, sponsored by, or endorsed by Applied Ballistics, LLC. Comparisons reflect publicly available information as of August 2026 and are provided to help shooters choose the right tool. If you believe anything here is inaccurate, email support@atlasballistics.com and we will correct it.
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