This is the FPS Tool, Personal Edition.It is Advert Supported. Or you can upgrade using in-app purchasing to be Advert Free and have 5 contacts and 10 guns each.You can Enter chrono readings in:* FPS / BB Weight* MPS / BB Weight* JouleThen its converted to a table of BB Weights, FPS, MPS & Effective Distance in Meters.Have upto 3 field limits, Set your field Limits in:* FPS / BB Weight* MPS / BB Weight* JouleAnd see if the gun being chrono’d is over the field limit.* Enter a list of BB Weights in Preferences, the defaults are 0.20, 0.23 & 0.25* Save your readings, Free version you are limited to 1 contact and 5 guns maximum. * Upgrade version – 5 Contacts and 10 guns each.* View and share the readings.* Import and export data to CSV*For single user or evaluation of the Airsoft FPS Tool Team Edition.Free version limited to 1 contact and 5 guns. Upgrade to get 5 contacts and 10 guns each.Note: Effective Distance is in Meters.Google analytics is used to report anonymous information about app and device versions.