By Igor Borisov

  • Category: Utilities
  • Release Date: 2009-06-17
  • Current Version: 3.58
  • Adult Rating: 4+
  • File Size: 13.81 MB
  • Developer: Igor Borisov
  • Compatibility: Requires iOS 8.0 or later.
Score: 3.5
From 464 Ratings


iStrelok is a ballistic trajectory calculator. - 693 reticles supported! Full list see here: - You can see holdovers on your reticle and scale holdovers to any magnification (if reticle is located in second focal plane). - Trajectory calibration ("Truing") feature. - abitity to change target type and select from: Round target (you can change diameter), Old IPSC Target, IPSC Target, IPSC Universal Target, IPSC Mini Target, IPSC A4 Target, IPSC A Target, Target number 4. And animals targets: Fox, Coyote, Wild Boar, Aoudad, Crow, Moose, Elk, Whitetail Deer, Rabbit, Rat, Pingeon, Marmot. - ability to input current altitude from internal GPS sensor - supports WeatherFlow WINDmeter (not WEATHERmeter) - iPhone 6 internal barometer support Small, handy and accurate. Field-proven accuracy since 2001. Supports imperial units (yards, feet, inches, etc).



  • Ballistic AE better

    By Shytbyrd
    This is an ok app, and it does work as advertised. That said, I’ve contacted Igor several times to inquire about giving the user the option to choose what outputs the user wants to see. I personally use MRAD only, and do not want to see the values for MOA or clicks - this just clutters up things showing useless data. Also leaves room for mistakes. For a couple of years I’ve been told that he would look into it and update the app - this is just lip service. Ballistic AE is a better app and only outputs the data you want.
  • Very Helpful App

    By Yamaha50th
    I would recommend this app for anyone starting to shoot long range and learning their scope reticle a bit more. I was telling my friend about this app but I do not see his scope in the list (Firefield 8-32x50) Would it be possible to add it??
  • Absolutely necessary for Precision Rifle Shooters

    By n.gardner
    As a PRS shooter this app is phenomenal. I have used this app in several long range matches at various ranges across America. If you have a precision long gun, you need this app. Don’t forget to change your weather!!! SGT_G
  • Latest version crashes

    By chsanders
    I’ve been very happy with the app up until this newest update. Everything seems to work except when I try look at the reticle and then it crashes.
  • Disappointed

    By 308 pilot
    I have Strelock Pro and decided to spend the $5 to have iStrelock. I have to say I'm more than a bit disappointed. No bullet database, trajectory calibration is lame, moving target, and a few others. Just a little redecorating with the layout. Not worth the money. It's more of a lite version. The more I use it the more upset I am that I got it. Igor flopped on this one.
  • Great App

    By ZSpicy
    Great app, works as it should. It's missing a few reticles. The biggest one I noticed is the 1-8 trijicon. That scopes pretty new though so hopefully it's updated soon. Update: Developer responded and added reticle I noted above. With such a responsive developer, the app is with every penny. Thank you!
  • Thanks for another update!

    By JTOgden
    I love that this app gets constant updates to add new reticles. Any shooter should have this on all their iOS devices. Keep up the good work on the app! Love it.
  • Great app

    By Maypar
    This app is very intuitive and easy to use. I contacted support last week to see if they could add a reticle for Burris and they did. I recommend this app 100%.
  • App crashed

    By JD in CO
    Purchased app on 03/26/17. It was great for one day. It failed to open the following day and has not opened since. Update: As of 03/30/2017 the app is up and running perfectly.
  • IStrelok

    By Kc2hlg
    Had some problems. After notifying author, he corrected it immediately. Great support. Thanks