Strelok Pro

Supports watches with Google Wear OS. You can send reticle image, target list or trajectory table to your watch. You need Google Wear OS 2.2 and higher. You can read how it works here: http://www.strelokpro.online/StrelokPro/android/wear_os.html
2390 reticles database! Full reticles list you can see here: http://www.strelokpro.online/StrelokPro/android/reticles.html
3827 cartridges database
2285 bullets database + 662 bullets with G7 ballistic coefficients
This smart ballistic calculator can use G1, G7 and... custom drag-functions! It can use Lapua radar data!
Can calculate trajectory without using ballistic coefficient! 
Powder temperature considering.
Supports imperial and metric units. 
Supports density altitude. 
Can calculate spin drift, gyroscopic stability factor and vertical deflection of crosswind.
Can calculate Coriolis effect.
Supports Skywatch BL 
Supports Kestrel weather meters via bluetooth, including new 5x00 family 
Support Kestrel DROP environmental data loggers 
Supports Weatherflow WEATHERmeter 
Trajectory validation (truing) by speed or ballistic coefficient.
Can measure incline angle with phone camera
Can get current weather from internet
You can store you data to Dropbox or Google drive for back up and sync between devices
You can select target type from big list of targets

Field-proven accuracy since 2007

Required permissions: 
1. Access to GPS - for Coriolis effect calculation and internet weather
2. Access to Bluetooth - to communicate with mobile weather station
3. Access to Camera - for measuring slope angle with camera
4. Access to internet - for Lapua drag-functions download  and internet weather
5. Access to storage - for write app settings and rifles. cartridges data.