Comparison

AB Quantum vs Shadow Book Enterprise

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

Shadow Book Enterprise

A secure and user-friendly digital data book designed for shooting professionals. It provides essential tools and advanced features for efficient data management.

Highlights
  • Digital data book
  • Security focused
  • Ease of use
  • Essential tools
  • Professional features
Features
Read full description

Welcome to Shadow Book Enterprise. Shadow Book Enterprise is a digital Data Book for the responsible shooting professional specifically designed with security and ease of use in mind. As you navigate Shadow Book Enterprise you will find that it offers all the basic necessities along with tools the consummate professional will grow to love and appreciate all at your fingertips. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://shadowhogdatabook.com/privacy-policy

Screenshots

AB Quantum4 screens
Shadow Book Enterprise4 screens

Verdict

The call

The clearest difference is review sentiment: Shadow Book Enterprise at 100% against AB Quantum's 45%. Shadow Book Enterprise also leads on monetization model (free vs free with in-app purchases). AB Quantum's advantage is ratings volume (2.7K vs 4) and update cadence (fortnightly vs every 6 weeks). 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 Shadow Book Enterprise sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

AB Quantum holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: AB Quantum has 2.7K ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 45% of AB Quantum's written reviews are positive against 100% of Shadow Book Enterprise's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

AB Quantum ships an update fortnightly, Shadow Book Enterprise every 6 weeks. The most recent releases landed on October 18, 2026 and October 15, 2026 respectively.

Scorecard6 real differences · 5 level
AB Quantum versus Shadow Book Enterprise: the parameters behind the verdict, then further details
ParameterAB QuantumShadow Book Enterprise
PriceFreeFree
Rating4.7 (2.7K ratings) — better4.5 (4 ratings)
Positive reviews44.9% of reviews100.0% of reviews — better
Number of ratings2.7K — better4
Update frequencyFortnightly — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
Best chart rank#118 — better—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.016.0
Further details — not scored
Size299 MB41 MB
Age rating4+17+
DeveloperApplied BallisticsShadow Hog Tactical and Consulting

Customer experience

AB Quantum

All ratings2,695 ratings
Positive93.8%
Neutral2.0%
Negative4.2%
Written reviews256 reviews
Positive44.9%
Neutral11.7%
Negative43.4%

Shadow Book Enterprise

All ratings4 ratings
Positive75.0%
Neutral25.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

Shadow Book Enterprise

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

Shadow Book Enterprise

Subscriptions3
  • Monthly Plan$9.991 Month
  • Semi Annual Plan$14.996 Months
  • Yearly Plan$19.991 Year

Questions

Is AB Quantum free?
AB Quantum is free to download, with in-app purchases available.
Is Shadow Book Enterprise free?
Shadow Book Enterprise is free to download, with in-app purchases available.
Which has better reviews, AB Quantum or Shadow Book Enterprise?
AB Quantum is rated higher. AB Quantum averages 4.7 out of 5 from 2.7K ratings, while Shadow Book Enterprise averages 4.5 from 4 ratings.
Do AB Quantum or Shadow Book Enterprise have ads?
Neither AB Quantum nor Shadow Book Enterprise shows ads.
Which is updated more often, AB Quantum or Shadow Book Enterprise?
AB Quantum ships an update fortnightly, and Shadow Book Enterprise every 6 weeks. Most recently, AB Quantum was updated on October 18, 2026 and Shadow Book Enterprise on October 15, 2026.

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