Keuwlsoft's Apps for Android
Keuwlsoft has published over 20 apps, mostly in the
tools and audio categories. A brief summary of the apps follows:
Monitor strength of nearby wifi networks. Use to find a good location for your wifi hub. Or use to identify a channel with little overlap with neighbouring networks.
Uses the GPS sensor, magnetic field sensor and accelerometer to determine the distance and direction to a GPS waypoint. Use for geocaching, finding your car, hotel, or other locations. Store up to 500 waypoints. Import and Export waypoints as GPX files.
Control your electronic project with an Android device. This app communicates to an HC-06 or HC-05 Bluetooth module in your project. Learn electronics in a fun way or rapid prototype your new idea. Customisable drag and drop panels with various controls including buttons, switches, sliders, pads, lights, gauges, terminals, accelerometers and graphs.
Uses the magnetic field sensor to convert your device into a compass. Magnetic North, True North, bubble level, pitch gauges, heading, inclination, location.
Uses the audio output to generate sound pulses and then detects the echo on the microphone. The echo signal can be visualised in a map, Fourier transformed or just as the time-series waveform. Edit the pulse signal. Sample at 44.1 kHz for 0.001s to 5s. Save CSV data files.
Sound Pressure Level Meter. This app uses the microphone to detect sound and convert it into an SPL value. Features: Octave bands, Time graph, Averaging, Max, Min, Weighting, Calibration, ...
Frequency counter based on the microphone input. Counts when the input rises or falls past a set level and converts into into frequency or a time period. x1 to x1000 gain and 2.5 to 640 ms/div graph. AC or DC coupling, 0.1s, 1s, 10s or 100s gate time,...
Audio spectrum analyser for your microphone. Adjust FFT size and range. Linear or logarithmic scales. Zoom & pan. Average, Min & Max traces. Snap to peak cursor. Musical note indicator. Save CSV data files.
Dual channel function/waveform/signal generator for the speaker/headphone audio output. 16 bit, 44.1kHz. Sweep, Burst, Modulation & Noise options.
Straightforward guitar tuner. Single screen app that starts in auto tune mode. Simply run the app, hit a string and start tuning your guitar. Tune into the orange region for a good results or green for perfection.
Guitar tuner with more professional options:
• Alternative guitar tunings.
• Shift up or down for orchestral tuning.
• Equal temperament or just intonation.
Keep time with this 10 to 310 BPM metronome. Accelerando feature for gradually speeding up or slowing down. Accent or mute beats. Change beats per bar and beat note. Up to 9 sub beats. 3 different sounds.
Spirit level app. Bull's eye level, roll and pitch gauges, horizontal and vertical Levels, angle gauge. Calibration feature to correct for axis miss-alignment and sensitivity.
Harmonicity (the harmonic to noise ratio) can give an indication of sound quality. This app uses the microphone to measure harmonicity, jitter, shimmer and the fundamental harmonic frequency.
Uses the magnetic field sensor to report the detect magnetic flux density in Gauss or Tesla. Includes rolling graph, compass, calibration option, maximum, minimum, averaging and sound output that changes frequency dependent on the magnetic flux density.
This app uses the light sensor to measure illuminance in lumens per square meter (lx) or lumens per square foot (foot candles). Features: Time graph, Averaging, Max, Min, Calibration, ...
Flashlight app with some cool features. Music mode with lights that dance in time with sounds detected on microphone. Accelerometer mode where the light changes with orientation. Hazard mode - change speed, color and blink pattern. Widget included.
Guitar tuner app which uses microphone to auto detect note being played which is then indicated by the 3 rotating dials. Equal temperament and just intonation tuning options. Shift feature and pitch pipe included.
Great for board games, as a kitchen timer, or for telling the kids how long until bedtime.
Interact with particle beams to make unique cool sounds. Change the number of notes per octave to create unique instruments. Slide along the particles beams to change octave smoothly.
Play up to 4 pianos simultaneously on one device. Notes played are highlighted on the other pianos to make teaching a new tune easy. Slide the bar below the piano to access notes from C1 to C8. Multitouch.
Operate up to 8 stopwatches simultaneously and log up to 100 lap or split times on each.
Tests your device USB Host capability by listing the USB devices attached.
View or log the output from your accelerometer sensor. Graph data, save data, plot a frequency spectrum, view sensor specifications or turn the accelerometer output into a light or musical instrument.