Barometer ∞
Chen-Yu Wei
Measure pressure and altitude
Measure atmospheric pressure and altitude. Switch between pressure units like hPa, mmHg, and inches of mercury. Display real-time readings and track changes over time.
Apps Like Boiling for iPhone and iPad
Calculate altitude and temperature
Calculate temperature and air pressure based on altitude. Read current altitude via GPS or ASTER data. Access device barometer for pressure readings. Search for any location's altitude using GeoNames. Manually adjust altitude settings.
Boiling screenshots
Ranked alternatives
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Flight parameters
Konstantinos Ladiellis
Calculate ISA and QNH altitude
Calculate standard ISA including pressure, density, and temperature. Compute QNH altitude. Adjust MSA for off-standard atmospheres. Convert calibrated airspeed to Mach number.
Altimeter ∞ Current Altitude
Chen-Yu Wei
Track with GPS precision
Track in meters or feet with real-time updates. Display GPS accuracy and battery usage. Works offline with a clean interface. Ideal for hiking, flight tracking, and outdoor activities.
Altimeter for Aviators
M Butler
Measure altitude using barometric pressure
Measure altitude using barometric pressure without GPS. Display real-time altitude readings. Track pressure changes over time. Set altitude alerts. Sync with Apple Watch for stand-alone use.
Physics Toolbox Sensor Suite
Chrystian Vieyra
Measure, record, and analyze data
Measure acceleration, orientation, and motion with built-in sensors. Record and analyze real-time data for experiments. Detect and generate sound tones. Visualize audio waveforms. Export measurements and graphs for scientific use.
P-T Calculator
National Refrigerants, Inc.
Calculate pressure and temperature
Calculate pressure and temperature values for refrigerants. Input pressure or temperature to automatically compute the other. Display superheat and subcool values. Show saturated vapor and liquid values for blends. Switch between refrigerant types.
Deluxe Moon Pro • App & Widget
Sergey Vdovenko
Track phases and lunar events
Track lunar phases, moonrise and moonset times, and eclipse predictions. View detailed maps and surface features. Adjust settings for photography with exposure and focus guides. Access astronomical data and cultural lunar calendars.
Tide Guide: Charts & Tables
Condor Digital LLC
Track tides, sunsets, and marine weather
Track tides and marine weather conditions with real-time data from global providers. View detailed and forecasts. Set alerts for tides and sunsets. Sync with Apple Watch for full-screen displays. Share station information.
Staslink: Satellites Tracker
SMART WIDGET LABS COMPANY LIMITED
Track and set observation reminders
Track the International Space Station and Starlink using real-time data. Input your location to find optimal viewing times. Set reminders for launches and visibility events. View satellite routes on a live map. Share sighting details with others.
Moon Phase Calendar LunarSight
Applorium Ltd
View phases and track lunar events
View phases and cycles for any location and date. Track rise and set times, altitude, illumination, and distance. Access detailed orbital data and stripe for full cycle visualization.
AvLearn
Frank Zhao
Calculate aircraft weight and balance
Perform aircraft calculations for general aviation study. Create and manage weight and balance profiles. Calculate pressure altitude, density altitude, and climb gradient. Add custom notes and memory items for review.
HVACR Check & Charge
Copeland LP
Calculate refrigerant charges instantly
Calculate refrigerant charges for systems using built-in formulas. Input system parameters to determine correct levels for R-22, R-410A, R-32, and other refrigerants. Save and export calculation results for record-keeping.
Muwaqqit
Little Giving
Calculate prayer times and astronomical data
Calculate prayer times and astronomical data for Muslims. Track anti-transit, sunrise, sunset, and other celestial events. Display times for Fajr, Zuhr, 'Asr, Maghrib, and 'Isha. Include shar'i night calculations and planetary positions.
Spaceflight Simulator
Spaceflight Simulator UK Ltd
Build rockets, explore space, track physics
Build and customize rockets to explore a realistically scaled universe. Navigate using real orbital mechanics and travel to distant planets and objects. Interact with Mercury, Venus, Earth, the Moon, Mars, Phobos, and Deimos.
Metric Conversion tool
Wight Hat Ltd
Convert units, save time, stay accurate
Convert units between 30,000+ conversions. Switch between 160+ currencies including cryptocurrencies with live rates. Save favorite conversions for quick access. Display results in fractions when applicable.
Meridian / JetProp Torque
InfoPogo, Inc.
Calculate flight metrics instantly
Calculate max speed cruise , true airspeed, pounds per hour, and NM/pound based on altitude and outside air temperature. Input values for Piper , M600, M700 Fury, and DLX aircraft. Reference performance tables and figures from specific POH sections.
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