speechlab
SpeechLab Support
Support for SpeechLab, a speech analysis app for iPad. How it works, what it runs on, how data is handled, and how to report a problem.
SpeechLab is still in development and not yet available. What follows describes it as it stands and may change.
Requirements
- Device
- iPad
- Operating system
- iPadOS 17.0 or later
- Version
- 1.0
- Languages
- Japanese, English, Korean, Chinese (Simplified and Traditional), German, Spanish, French, Italian, Portuguese, Arabic, Hindi
Features
Included
- Recording and playback, with range selection, looping and playback speed
- Importing audio files and exporting WAV
- Waveform (oscillogram) display
- Spectrogram, wide band and narrow band
- F0 (pitch) track
- Formant track
- Vowel chart (F1×F2 plot with the IPA quadrilateral overlaid)
- Interval labelling with multiple tiers and point labels, with an IPA keyboard
- Reading and writing TextGrid files
- Exporting and sharing figures
Pro (a one-time in-app purchase)
- Automatic segmentation and labelling
- Pitch shift, rewriting F0 with TD-PSOLA
Pro is a one-time purchase, not a subscription. It applies to devices signed in to the same Apple Account and can be restored with “Restore Purchases”.
How your data is handled
Recorded audio and its analysis are processed entirely on your iPad. Nothing is sent to our servers, and there is no account to create.
The microphone is used only while recording. You can change the permission at any time in the iPad Settings app.
The first time you run Pro automatic labelling, the app downloads a speech recognition model (about 150 MB) over the internet. Only the model is downloaded — your audio is never uploaded. Once stored on the device, all later processing runs offline.
Frequently asked questions
- Does it run on iPhone?
- It is currently for iPad only. Showing the waveform, spectrogram and labelling together needs the screen area.
- Automatic labelling won't start, or stops partway.
- The first run downloads a model of about 150 MB. Check your Wi-Fi connection and free storage; progress appears at the top of the screen. Once the download finishes, later runs work offline.
- I purchased Pro but the features are locked.
- Try “Restore Purchases” in the settings. You need to be signed in with the same Apple Account used for the purchase. If that does not help, write to us with the date and time of purchase.
- How do I request a refund?
- Payment and refunds for in-app purchases are handled by Apple. Please request them at reportaproblem.apple.com.
- Where do exported files go?
- You choose the destination from the share sheet — the Files app or another app.
Reporting a problem
When reporting a problem, please include the app version, your iPad model and iPadOS version, the steps to reproduce, and what you expected versus what happened. The form asks for these in turn.
Go to the contact form