Apps Like HamAlert for iPhone and iPad
Receive push alerts
Receive push notifications for amateur radio station activity from . Filter spots by DXCC, callsign, island, summit, park, CQ zone, continent, or band. View real-time data from Reverse Beacon Network, SOTAwatch, DX cluster, and PSK Reporter.
HamAlert screenshots
Ranked alternatives
Showing 221–240 of 1,000 ranked alternatives.
AirFlare
Vector Flight LLC
Share location in emergencies and everyday use
Share real-time location with contacts using simple setup. Locate devices reliably in low cellular areas. Activate emergency beacon to send location data for rescue. Sync with emergency contacts for quick response.
Nikon SpotOn for iPad
Nikon Inc.
Aim precisely with ballistic match tech
Spot On Ballistic Match Technology provides precise aiming points for BDC reticle riflescopes. It offers instant reference for sighting in other riflescopes using plex, MilDot, or standard crosshair reticles.
Image Search - Reverse Image
Simple Start Technologies
Upload photos to for their source
Upload photos to perform searches and find matching sources. View results instantly without typing. Identify people, products, or locations from images. Share findings directly from the .
Flags! - Maritime signal flags
Ziga Porenta
Learn , test knowledge, create quizzes
Provides a comprehensive list of international , including letters, numbers, and substitutes. View detailed descriptions of each flag. Take custom quizzes to test knowledge. Includes flashlight morse code examples and a minimalist design.
GO-21 SciRPN
Steve Lidie
Calculate using RPN and stack registers
Simulates a retro scientific calculator with RPN input. Features a 10-digit LED display, four stack registers, and a storage register. Includes math, trigonometric, and logarithmic functions. Displays results in polar/rectangular formats.
Circuit Playground
Adafruit Industries LLC
Calculate component values and resistor codes
Calculate component values for Op Amp, 555, RC Filter, and Resistor Divider circuits. Decode resistor and capacitor codes. Compute power, resistance, current, and voltage using Ohm's Law and Power Calculators.
TornadoSpy
Justin Graham
Track tornadoes and view radar snapshots
Monitor real-time tornado reports from users and officials. View radar images of reported sightings. Submit and view user-spotted tornadoes instantly. Receive alerts for nearby severe weather events. Track storm progress with interactive maps.
Quakes Today
Jim Marquardt
View , filter by location and time
View earthquake data from the past 24 hours with filters for location, magnitude, and time. Tap for details and maps. Use cluster mode to visualize swarms. Scroll through events using the timeline feature.
Crane Operator Hand Signals
Specialized Carriers and Rigging Association
Access and graphics instantly
Access with graphical illustrations for quick reference. View OSHA-compliant for each command. Search and select for immediate use in operational settings.
How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.