Local-first by design
Raw EDF files, workspace data, analysis results, and exports stay on device by default.
iPhone-first EDF / EDF+ research workspace
EEG TraceLab
Local-first EDF / EDF+ review and research signal inspection on iPhone.
Open, anonymise, inspect, preprocess, analyze, and export EEG recordings locally, with transparent parameters and non-clinical research boundaries.
Fp1
Fp2
F3
F4
C3
C4
P3
P4
Privacy and use boundary
A research workflow with the boundaries visible.
EEG TraceLab is built around local review, anonymised metadata, and explicit non-clinical use. The website says the quiet part clearly because the product does too.
Anonymised import flow
EDF header fields are rewritten before recordings enter the local library.
Research and education scope
Built for non-clinical signal inspection with clear warnings, parameters, and provenance.
No clinical claims
EEG TraceLab is not a medical device and does not provide clinical decisions or emergency support.
Core workflow
From file import to provenance-backed export.
Import
Open EDF / EDF+ recordings from local iOS file sources.
Anonymise
Create safe recording IDs and keep original identifying fields out of the library.
Inspect
Review multi-channel traces in a landscape iPhone waveform workspace.
Prepare
Preview preprocessing choices while preserving the immutable raw EDF source.
Analyze
Run local selected-window research analysis with transparent parameters.
Export
Share research artifacts, warnings, and provenance as local files.
Signal review
Inspect dense EEG traces without turning the phone into a toy viewer.
The core workspace is a landscape iPhone signal viewer with the controls expected in real EDF review: channels, montage, filters, annotations, notes, and selected-channel actions.
Landscape waveform viewer
Vertical channel scrolling, horizontal time navigation, pinch time zoom, gain, amplitude scale, current marker, and bottom timeline.
Channels, montage, and filters
Search and save channel selections, use original, referential, average reference, automatic bipolar, or manual bipolar views, and preview high-pass, low-pass, band-pass, notch, and downsample settings.
Annotations and local notes
Parse EDF+ annotations, search and jump to events, add local research notes, and show lightweight markers without mutating the recording.
Selected-channel workflows
Highlight traces, recolor selected channels, open selected-channel-only review, or launch analysis from the current visible window.
Research analysis
Local analysis modules for selected windows.
Each result records selected channels, window, sample rate, montage/reference state, filter/downsample state, algorithm parameters, warnings, and provenance.
Power Spectral Analysis
FFT and Welch PSD, infraslow through gamma band power, peak frequency, and band ratios.
Time-Domain Signal Metrics
RMS, peak-to-peak, variance, zero crossings, mean, min/max, flatline, and clipping indicators.
Time-Frequency Analysis
Sliding-window PSD-derived heatmaps and tables for selected channels and windows.
Band Power Timeline
Absolute and relative band power over time with dominant band and peak-frequency context.
Structural Band Power Comparison
Compare channels, structures, windows, and bands with grouped charts and research summary metadata.
Aperiodic / Spectral Slope Analysis
Fit local log-log PSD background with residual peak plots and transparent fit metrics.
Power spectral analysis is for research signal inspection only. Results depend on EDF metadata, selected montage, preprocessing, and window settings. Not for diagnosis or clinical decision support.
Preprocess Signal
Prepare derived signal state without rewriting raw EDF.
Preprocessing is local, inspectable, and provenance-aware. Suggested bad channels remain signal-quality cues for user review rather than automatic interpretation.
Local Preprocess Signal workflow
Raw EDF remains immutable
Manual bad channel marking with notes and reasons
Suggested bad channels as signal-quality suggestions only
Drift, detrend, high-pass, and re-reference preview
ASR and ICA preview workflows with warnings
Raw vs Processed analysis sources
Saved preprocessing runs, reports, and provenance
Infraslow is valid only with true DC-coupled recordings.
Workspace and export
Keep the research trail attached to the result.
EEG TraceLab treats exports as research artifacts: the file matters, and so do the parameters, warnings, source state, and local-only provenance around it.
Project Workspace
Organize recordings, analysis runs, notes, presets, excluded windows, exports, and anonymised project manifests.
Saved runs and presets
Reopen Analysis History, save Parameter Presets, manage Preprocessing Runs, and apply repeatable settings across sessions.
Local export bundles
Export CSV, JSON, PNG, parameters, warnings, and provenance. Batch export manifests support multi-recording local workflows.
EDF / EDF+Import and local copy workflow
MontageOriginal, referential, average, bipolar
Welch PSDBand power, peak, ratios
Local exportCSV, JSON, PNG, bundles
Plans
Preview for free. Unlock local research workflows with Pro.
Free
PreviewFor lightweight EDF / EDF+ evaluation on iPhone.
- Inspect the first 10 minutes per EDF file
- View up to 20 visible channels
- Basic waveform preview
- Basic channel selection and display tools
- No file size pricing limit
EEG TraceLab Pro
£24.99/yearA yearly auto-renewable subscription for complete local research workflows.
- Full EDF / EDF+ review
- Unlimited visible channels where supported
- Local analysis and preprocessing tools
- Analysis History, presets, and Project Workspace
- CSV, JSON, PNG, bundle, and provenance exports
Support and release pages
Public legal and support pages are ready for App Store metadata.
Privacy, terms, subscription terms, and support content use the same local-first boundary as the app.