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Hawke™ ChairGun

ChairGun, from Hawke Sport Optics, is the only ballistics software available that is specifically designed and developed for airgun users. Now it's available for use on your iPhone or iPod touch!

Concentrating on those features that are invaluable in the field, ChairGun Mobile has all of the features that users have come to know and depend upon as well as taking advantage of the iPhone's mobile platform features.

Blueprint your airgun / scope combo in order to calculate aim points at various magnifications, inclination and weather conditions.

At a glance :

* Extensive pellet database; 0.177 to Big Bore, fully extendible and editable
* Sort pellet database by pellet name, weight or BC
* Save and Load settings and data
* Wide range of current Hawke reticles
* Provision for non-standard generic Mil-dot reticles
* Rangefinder (bracketing) views for all included reticles
* Multiple comparison tables and graphs - instant solutions for 'what if?' queries
* Accurate Wind Deflection calculation and display
* Simple, accurate and fast inclination angle estimation
* Calculate Optimum Zero Range and Point Blank Range
* Imperial or Metric units
* Tried, tested and approved
* Extensive internal help


What’s New

Version 2.2.2

Updated for iOS 12
Inclination cross-hair reverted to simpler design for clarity

Ratings and Reviews

4.6 out of 5
15 Ratings

15 Ratings

Nushagak ,

Handy and easy for field use but full of features

This is a great app. At first i had my iPad rotated and locked to horizontal and i could only get one ballistics table for one set of entry points. Then i found out you need to rotate vertical to enter new data and everything works great. Very handy and infinitely more practical than taking a laptop to run chair gun. Not only can you get your table for the shot, but there are several graph modes that I didn't expect for a mobile version. Hawke does us pellet shooters a great service by supporting chair gun. Only suggestion: in horizontal display mode show a note to rotate for other menus.

Huge bug. ,

Needs Updated Like Chairgun Pro 4

The new Chairgun 4 for Mac OS (NOT this app...but rather the mother program for your computer) was upgraded recently with some very welcome additions that now allow the distance grading of a full reticle (not just the bottom half) as well as enough resolution on the axes of the graphs to know what holdover to use for a fine range of distances.

The iOS app (this app) still only allows you to see a half of a reticle (bottom half) at any time and doesn't allow you enough resolution (or any control over) the axes of the graphs to be useful. For instance, you can look at a longer or shorter range on a graph, but the app automatically resizes the axes with spaces that are often useless (e.g. spaces on axes are a full 3 mil-dot between lines!!!!)....making it virtually impossible to interpolate the holdover to use down to even one mil dot (let alone a half mil dot).

This is a great mini app for the full MacOS program for your computer (which is absolutely phenomenal and supremely useful) but unfortunately, you can just take this app out into the field. You still need to do your calculations on the computer and print out range cards or a copy of the full reticle a with holdover markers.

Madgopher71 ,

Sound and accurate.

There's so many options and it has already helped me sight in my to gamos. I have tested its accuracy with about ten deferent pellets and where it says ill hit is where it hits. For example I punched in the numbers for sighting in at 25 yards. It says the with my set up my poi should be 1/2 low at ten. So I sighted the gun in my living room at a measured ten yards. The went out side and my first shot at 25 was dead center of the bullseye. Followed by three more that cloverleaf the first pellet all touching. Can't get better than that.

App Privacy

The developer, Hawke Optics, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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