Our pricing plans.
Free for casual use. Plus for working acousticians. Enterprise for teams.
Free
- Sweep and impulse measurement
- Average reverberation time
- Email support
- Guided measurement with instructions
- Multiple measurements per run
Plus
- Everything in Free
- Reverberation time in octave bands (125 Hz – 4 kHz)
- Detailed quality factors (SNR, r²) per band in the .CSV export
- Save and send results — attach photos and room data
- Extensive personal support by phone and email
Enterprise
- Everything in Plus
- Additional features tailored to your organisation
- Remote measurement for your clients
- Training for your team
The honest answers.
On the iPhone with its internal microphone, T20 is well within the tolerance of ISO 3382-2 in rooms with reverberation times between 0.4 and 5 seconds. The calculations are robust against ambient noise, and additional quality factors like the signal-to-noise ratio and the correlation coefficient are paired with each measurement to let acousticians decide for themselves how trustworthy the measurement is. For further investigation, the recorded impulse responses can be exported.
For laboratory-grade certification work, you still want a Class-1 instrument. For day-to-day acoustic measurement in studios, classrooms, offices, and small venues — AcousticCheck is an excellent tool that we use for our own consulting.
Almost none. The default workflow — place phone, tap to record, get a number — works for everyone. The more you know about acoustics, the more value you’ll get from the octave-band breakdown and the CSV detail, but the averaged numbers also give you an idea of the overall situation. The measurement process can be guided, and AcousticCheck uses built-in safeguards that try to allow only correctly acquired results.
Pros: it’s always with you. It’s ten times faster than rigging a bulky measurement system. The results can be shared in an instant after the measurement.
Cons: it’s an iPhone. In a 4,000-seat hall with a 3-second reverberant tail and lots of ambient noise, you won’t get far with the internal microphone. More hardware is needed and you need to carry more with you. It’s still more compact than most other devices.
Yes, currently iOS only. Ensuring the same accuracy across Android devices is a much bigger endeavour, because the range of hardware and software is far wider. We’d rather not ship a tool with inferior accuracy. It’s on the roadmap.
No. For most rooms the internal iPhone microphone is sufficient. For very large or very noisy rooms, or when capturing impulse responses below 100 Hz, an external microphone (connected by Lightning/USB-C adapter or a USB audio interface) can give a higher signal-to-noise ratio and even higher accuracy.
Depending on the loudness of the Bluetooth speaker, you can measure rooms with a floor area of up to about 300 m² with the sweep method. For bigger challenges, professional microphones and loudspeakers can be connected via a USB audio interface, allowing the same measurements as other professional measurement systems.