HandsFreeCheck vs Optivolt

Check your Bluetooth headset's microphone and speaker with a continuous live audio loop before a call. HandsFreeCheck sends the microphone signal back to your headset while displaying separate microphone and speaker waveforms with dBFS levels. Features • Live Bluetooth hands-free microphone monitoring • Separate microphone and speaker signal displays • Input and output device names • Adjustable monitoring level • Pause and resume • Automatic connection handling Audio is processed on your device. Nothing is recorded or uploaded. No account, ads, or subscription. Connect your headset in Bluetooth settings, open the app, allow microphone access, and speak. The app requires a Bluetooth Hands-Free Profile (HFP) device with both microphone and speaker support, including compatible AirPods. Without a compatible device, the app waits for a connection. Bluetooth monitoring introduces some delay. The speaker trace shows the app's digital output, not an acoustic measurement. This is a live communication-route check, not an independent left/right speaker test. A later phone call may select a different audio route. Compatible with iPhone and iPad running iOS 15 or later.

The charger at your office is a perk. Optivolt helps you make the most of it. Tell Optivolt which days you're in the office, how many free charges you get each month and how much your commute uses. It builds the optimal plan for the whole month: which days to charge, how much battery you'll arrive with each morning, and how you'll finish the month. No spreadsheets. No guesswork. YOUR MONTH AT A GLANCE - A calendar you read in a second: office days, charge days and expected battery, evening by evening. - A battery chart with your charging threshold and month-end target always in view. - Your next charge up front, with arrival level before and after. REMINDERS THAT THINK FOR YOU - Get reminded to book the charger, as early as you like. - If the plan changes and a booked charge is no longer needed, Optivolt tells you in time to cancel it. - On charge-day mornings at 7:00, a heads-up that today is the day. - Mark a charge as booked right from the notification. ALWAYS IN SYNC WITH REALITY Took a detour? Charged at home? Enter the actual value and Optivolt instantly recalculates the rest of the month. Force a charge, skip one, and save sessions when you don't need them. OPTIVOLT PRO One purchase. Yours forever. No subscription. - Corrections with actual battery levels, extra consumption and home charging. - Every month: plan ahead and look back. - Default office days that fill in your calendar automatically. - History with a chart of your charges over the last year. - A beautifully designed monthly PDF report, ready to share. DESIGNED FOR iOS 26 A Liquid Glass interface, light and dark mode, and your data stays yours — on your iPhone and in your iCloud. No account, no ads, no tracking. Optivolt. The right charge, at the optimal time.