Comparison

AB Quantum vs Locus Ballistics

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

AB Quantum

This app provides a comprehensive ballistics solver and profile management tool for long-range shooting. It features a new user interface designed for single-handed use, enabling quick solutions and seamless integration with Bluetooth-enabled devices. Users can sync gun profiles, create customizable range cards, and access an updated reticle library.

Highlights
  • Ballistics solver
  • Profile management
  • Bluetooth device integration
  • Customizable range/target cards
  • Reticle library
  • Ballistic truing
  • Chronograph integration
Features
Currently charting
Read full description

Applied Ballistics Quantum™ is a state-of-the-art app integrating the most complete ballistics solver and profile management tool for long-range shooting. Featuring an all new user-interface, AB Quantum™ includes a host of new tools and features that will enable shooters and hunters to be more successful in the field. AB Quantum™ creates a new paradigm for ballistic solvers and integration with Bluetooth®-enabled devices. With a host of new features, the platform is designed to save time and add performance for users of all skill levels. The all new user-interface is designed with single-handed use in mind, putting all major features just a swipe or tap away from any screen, which allows users to rapidly obtain solutions in the field or at a match. The simplicity and versatility of the app interface creates an intuitive experience for both new and experienced users. Two new features - AB Quantum Connect™ and AB Quantum Sync™ - enable users to quickly connect to other AB-enabled devices and sync gun profiles between them in seconds, as well as back those profiles up to an encrypted server for peace of mind and easy restoration. The new platform automatically saves changes made to rifle profiles and updates connected devices without the user needing to do anything. For competitors or hunters, AB Quantum™ includes customizable Range and Multi-Target tables. This allows users to lay out the displayed information to exactly what they need to hit their target. After creating a range or target card, it can easily be shared via email. Built with the future in mind, the new AB Quantum™ platform allows for continuous innovation. At launch the following new features will be available: • AB Quantum™ User Interface - Take control of ballistic data and find solutions with ease using the new layout designed with one-handed operation in mind. • New Bluetooth® Device Manager - Find and connect AB Bluetooth® devices quickly and send data between devices using AB Quantum Connect™. • AB Quantum Sync™ - User gun profiles are automatically uploaded to an encrypted server to allow easy access for other devices and backup, providing peace of mind and security. • Customizable Range Card and Target Card Modes - The new expandable and customizable range and target card modes allow users to select what data to see for each Range or Target. Use the share function to send range and data cards in just seconds. • New Reticle Library - The AB Reticle library is hosted online and updates in AB Quantum™ automatically, providing users with up-to-date solution drawing for their favorite rifle scopes. • Improved Truing Interface - Easy to access ballistic truing features without leaving solution screens. • Chronograph Integration - Connect Bluetooth®-enabled chronographs - such as the Optex Systems SpeedTracker™ - directly to the app and save the velocity data to rifle profiles.

About

Locus Ballistics

Features
Read full description

Locus Ballistics — PRS-ready ballistic calculator for long range shooting Locus Ballistics is a ballistic calculator designed for Precision Rifle Series (PRS) workflows and long range shooting. It works as a ballistic tool that computes bullet trajectory corrections based on environmental conditions, rifle configuration, ammunition parameters, and target distance, and supports reliable offline operation. How the ballistic calculator works Accurate long range shooting depends on precise calculations. This ballistics calculator processes distance, wind, temperature, and equipment parameters to compute bullet drop and trajectory values in real time. As a trajectory calculator, Locus Ballistics allows multiple targets to be calculated simultaneously. Each target can have its own wind values, making this ballistic tool suitable for PRS and other long range shooting disciplines. Key features for PRS and long range shooting - Offline mode allowing trajectory calculations without an internet connection - Multi-target ballistic calculator with several targets displayed on one screen - Independent wind values for each target within the ballistic tool - Targets grouped by locations with instant switching - Main-screen-first interface for fast control of the ballistic tool - Flexible unit systems and parameter configuration - Primary correction plus correction relative to the first target, useful for PRS stages - Weather from a Kestrel meter over Bluetooth Designed for PRS workflows Precision Rifle Series shooting often involves awkward positions, multiple target distances, and rapid transitions. Locus Ballistics is a ballistic calculator optimized for these PRS requirements, keeping targets, locations, and bullet drop corrections immediately accessible. This PRS-focused ballistic tool emphasizes simplicity and speed, helping shooters manage long range shooting calculations without rebuilding setups between targets. Free - 1 rifle profile - 1 ammunition profile per rifle - Up to 3 targets per location - 1 saved location - Full access to trajectory calculator outputs, including bullet drop Pro - Up to 10 rifle profiles - Up to 10 ammunition profiles per rifle - Up to 30 targets per location - Up to 30 saved locations - True Drop Fit — advanced real-data trajectory analysis - Garmin companion - Apple Watch companion - Fire Map Pro is an auto-renewing subscription: weekly, monthly or yearly. Manage or cancel your subscription any time in your App Store account settings. Responsible use Locus Ballistics is a ballistic calculator intended for calculation, reference, and training, including PRS training and long range shooting. It does not provide operational guidance. All results depend on user-supplied data and should be validated in controlled conditions. Privacy Policy: https://locusballistics.com/#privacy-policy

Screenshots

AB Quantum4 screens
Locus Ballistics4 screens

Verdict

The call

The clearest difference is update cadence: Locus Ballistics at every 3 days against AB Quantum's fortnightly. AB Quantum's advantage is chart position (#131 vs unranked). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. AB Quantum sells 15 in-app purchases, starting at $2.99 per month and Locus Ballistics sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

AB Quantum ships an update fortnightly, Locus Ballistics every 3 days. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 9 level
AB Quantum versus Locus Ballistics: the parameters behind the verdict, then further details
ParameterAB QuantumLocus Ballistics
PriceFreeFree
Rating4.7 (2.7K ratings) — better—
Positive reviews44.9% of reviews—
Number of ratings2.7K — better—
Update frequencyFortnightlyEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
Best chart rank#131 — better—
DevicesiPhone, iPadiPhone, iPod, Apple Watch — better
Requires iOS16.015.0 — better
Further details — not scored
Size299 MB35 MB
Age rating4+4+
DeveloperApplied BallisticsRoman Kantsir

Bugs and requests

AB Quantum

Reported bugs

4 issues
  • Bullet BC not retaining custom values
  • Profiles disappearing after updates
  • Atmospheric data not syncing correctly
  • Ballistics calculations not matching real-world data

Requested features

5 requests
  • Apple Watch app
  • More reticle options
  • Metric unit support
  • Backup and restore functionality
  • Improved range card and target card features

Locus Ballistics

Not enough reviews yet to summarise bugs or requests.

In-app purchases

15 purchases

AB Quantum

Subscriptions4
  • Elite Monthly$2.991 Month
  • Professional Monthly$3.991 Month
  • Elite Annual$19.991 Year
Show 1 more
  • Professional Annual3 Days trial$29.991 Year
One-time11
  • Custom Drag Model (CDM) for Berger 0.264cal 140gr Target Hybrid$1.99
  • Custom Drag Model (CDM) for Sierra 0.308cal 175gr MatchKing$1.99
  • Custom Drag Model (CDM) for Hornady 0.264cal 140gr ELD Match$1.99
Show 8 more
  • Custom Drag Model (CDM) for Hornady 0.264cal 143gr ELD X$1.99
  • Custom Drag Model (CDM) for Hornady 0.264cal 147gr ELD Match$1.99
  • AB Caliber 0.224 CDMs$9.99
  • AB Caliber 0.243 CDMs$9.99
  • AB Caliber 0.264 CDMs$9.99
  • AB Caliber 0.284 CDMs$9.99
  • AB Caliber 0.308 CDMs$9.99
  • AB Caliber 0.338 CDMs$9.99
3 purchases

Locus Ballistics

Subscriptions3
  • Premium Weekly$1.997 Days
  • Premium Monthly$3.991 Month
  • Premium Yearly$39.991 Year

Questions

Is AB Quantum free?
AB Quantum is free to download, with in-app purchases available.
Is Locus Ballistics free?
Locus Ballistics is free to download, with in-app purchases available.
Do AB Quantum or Locus Ballistics have ads?
Neither AB Quantum nor Locus Ballistics shows ads.
Which is updated more often, AB Quantum or Locus Ballistics?
AB Quantum ships an update fortnightly, and Locus Ballistics every 3 days. Most recently, AB Quantum was updated on October 15, 2026 and Locus Ballistics on October 12, 2026.

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