Guides and how-tos
Practical, step-by-step answers for the jobs our apps are made for.
Mic Bluetooth Speaker
- How to post a voice clip to Snapchat, Instagram, TikTok or WhatsApp status
Snapchat, Instagram Stories, TikTok and WhatsApp status reject audio files. Here is how to record a voice-changed clip and share it as a video instead.
- How to stop a Bluetooth speaker whistling or echoing when you use a phone mic
Why a speaker squeals or echoes when you speak into a phone, and the practical fixes that stop it: distance, volume, placement, earbuds and feedback reduction.
- How to use your phone as a microphone for a Bluetooth speaker
A step-by-step guide to turning an Android phone into a live wireless microphone for any Bluetooth speaker or earbuds, with tips for clear sound and less delay.
Engineer Tools
- Slope conversion: degrees to percent, mm per metre and inches per foot
Convert an angle in degrees to percent slope, millimetres per metre, inches per foot and a 1:n ratio, with formulas and ready-made tables for common slopes.
- How to level a motorhome or caravan with your phone
Measure the tilt with a phone, work out how far each wheel must be raised with a simple formula, and level a motorhome or caravan with ramps or blocks.
- How to use your phone as a spirit (bubble) level and calibrate it
How a phone bubble level works, how to place it, and how to calibrate it with a two-point flip so the reading is accurate on any surface.