AChrono

Pretty cool app I wanted to get a chrono but this is plenty close enough so that I know pretty close to where Im at                 Achrono

Had my bow pro chrono tested and then tried the app The results were dead on It basically uses the old way to measure the speed with the sound of the release the sound of the hit and the time it takes between them Great idea for an app                 Incredibly accurate

I have a new IPhone 4 The app has closed on me several times Numbers are all over the board Sometimes it collects the end sound as the starting sound I have compared this app along side my ProChrono and its not even close to accurate     Doesnt work for me

This app did work well before but not it wont register the recording It freezes after it records     Something is wrong

The phone measures the sound lapse But this time includes the time it takes the pellet to travel to the target AND the return of the sound FROM the target at 1120 fps or 0054 secs for a 60 ft range Unless a correction is made the phone would show a slow speed error High for an air rifle less for a bow I have since the above calculated the actual speed of my arrowpellet by applying a correction to the speed shown on the App I found the actual speed of the arrow was 199 faster than the App and the actual pellet 681 faster To correct divide the App speed into the range length in feet to get total lapse time in secs From this subtract the time for the sound to return from the target to the phone range divided by 1130fs Then divide the answer into the range length to get the actual corrected speed of the projectile in fs Arrow App 187fs Actual 224fs Pellet App 464fs Actual 780fs Good luck           Somes

Great little app very very easy to use I like it very much and way cheaper than an actual chrono                 Very nice

I tried to use this app to chrono arrows at 24ft in the basement No good Its just not clear where you start measurement Tip of arrow at draw or at rest And over short distances that makes a big difference Plus accurate readings are tough at shorter distances so its really no use for indoor tests at home I finally had to go back to a real bullet chrono with a 4ft spacing between screens and a 150w bulb right over each end Perfect        Could work but not for me

I bought this app a few days ago and been having fun with it Its about 99 accurate It was only 2 FPS off My buddies pro chrono This was well worth the 99 cents                 Well worth the 99 cents

Good app Very accurate Take your time follow the directions you will be impressed                 Plott man

This app wont work on ios 7 and up Just crashes after count down        Achrono update

This is a great way to test your archery set up for a low cost I have tested it for about an hour and have found out that the results are accurate with back country bow calculator and my own pro chrono This is a fun tool that all archers can appreciate and use during their shoots and practice              Overall A Great App

I would prefer that this app was free but i think it is worth the dollar I spent on it this is a very good way to measure fps with decent accuracy without spending a lot on a nice chronograph I use it on my bow as well as my air rifles and pistol As long as you shoot from at least 20 yards it is probably accurate to around plus or minus 120 fps I guess a 40 fps range should be expected for a dollar application                 Good App

This chronograph app is not worth a dime Works off of time it takes you to push the button twice and calculates that with the distance and gives you the speed in fps This is awful subjective info I deleted the app after 4 minutes of playing with it     Steer clear

Works great Great application for a mobile device                 Great Application

Tried this on my HeliM last night and it worked great Simple to use                 Works great

I bought this app although I wasnt quite sure it could do as advertised I have to say I was very pleasantly surprised It works great Very easy to use as long as you follow the instructions The instructional video is helpful for that Seems to be very accurate based on the last time I had my speed checked on an actual chrono Very useful app Highly recommended                 Pleasantly surprised

Very easy to use and accurate                 Nice app

App works great and is very intuitive I havent tested it against a chrono but based on my bows IBO and my set up it seems like its spitting out accurate info                 Very Intuitive

Please make the log accessible from main screen Please install a stop button several times I have wanted to stop the countdown Please add an option of manually deleting a log entry Shooting from 20yds according to app I am shooting an average of 349 fps Seems a bit fast for a 2011 diamond outlaw Perhaps algorithms are off or maybe the bow is better than advertised Doubtful Stopped working Not impressed        Needs immediate improvements

V2 crashes every now and then              Great app but version 2 has some stability issues