SatVis vs Flow Alert

Satvis is a free, open-source satellite tracker. It draws more than 12,000 satellites on a 3D globe in real time, across fourteen catalog groups: Starlink, GPS and the other navigation constellations, weather and Earth-observation satellites, the ISS and other crewed stations. Set where you are and it works out when each one passes overhead, and your iPhone reminds you before the pass starts. Point your iPhone at the sky to find the ISS, Starlink and 12,000 more satellites overhead. WHAT IT DOES • Follow more than 12,000 satellites live on a 3D globe, with positions computed on your device • Show points, labels, orbits, ground tracks, sensor cones and 3D models, coloured by orbit class • Turn any of the 14 catalog groups on or off, or search for a single satellite • Track a satellite and the camera follows it along its orbit • Set a ground station, list its upcoming passes, and get a notification before one starts • Find a satellite overhead in the sky view, aimed by moving your phone • Choose 3D, 2D or Columbus view, with base maps, star fields, terrain and 3D buildings • Share the exact view you are looking at as a link • Keep using it offline from cached satellite data WHERE THE DATA COMES FROM Orbital elements come from CelesTrak, refreshed every six hours, and are propagated on your device with SGP4. FREE AND OPEN SOURCE No account, no ads, no in-app purchases. Developed in the open at github.com/Flowm/satvis under the MIT licence.

Flow Alert provides quick access to flow , stage, temperature, and turbidity data made available by the United States Geologic Survey (USGS). Download USGS gauges and add favorites to a separate list. Create nicknames for your favorite gauges. Add a widget on your home screen that shows your selected parameter for your favorite gauges. Currently, widgets update automatically approximately every 15 minutes and show a bell icon if an alert is triggered. Add alerts to notify yourself when your gauge meets your defined criteria. Multiple alerts may be set for each favorite gauge. Manage your alerts for all gauges in one screen. Select a gauge from the list to see an interactive graph of the past 7 days of available data. Data provided by: -United State Geological Survey (USGS) Disclaimer: Flow Alert provides quick access to flow , stage, temperature, and turbidity data made available by the United States Geologic Survey (USGS) via USGS Water Services. All data shown in Flow Alert are downloaded from the USGS Water Services API. Flow Alert is not affiliated with, endorsed by, or representative of any government entity including USGS. Flow Alert does not take credit, responsibility, or ownership for any data downloaded from USGS's Water Services API. It is simply a tool that you can use to view the data made available by USGS. Data Source Link https://waterservices.usgs.gov/. If you have feedback, suggestions, or feature requests, please e-mail me at flowalertapp@gmail.com...I'd appreciate it! You may also submit feedback through the in-app feedback page.