Explore prepared signal packages
Browse compact packages built from public/open telescope data, with metadata, source credits, and clear data labels.
Now live on the App Store
Signal Ark
Listen to the Universe.
Explore real cosmic signal data, waterfall spectrograms, and SETI-inspired science tools.
Signal Ark is an iPhone and iPad app that distributes compact signal packages prepared from public/open telescope data. Users inspect waterfall images, run lightweight scans, save candidate signals, and send small results back to the Signal Ark database.
What the app does
A quiet cockpit for signal review.
Inspect waterfall spectrograms
Study signal intensity over frequency and time, then review candidate markers without treating them as conclusions.
Run lightweight scans
Review anomaly score, signal-to-noise ratio, drift rate, and RFI probability on iPhone and iPad.
Send results back to the Ark
Return small scan summaries and classifications to the Signal Ark database for future review and ranking.
Signal Stock
Compact packages, not massive raw telescope files.
Signal Ark does not send massive raw telescope files to phones. The backend stores compact packages containing metadata, waterfall images, candidate information, and source credits.
metadata.jsontarget, source, frequency, data status
waterfall.webpmobile-ready spectrogram imagery
candidates.jsonanomaly, SNR, drift rate, RFI probability
source_credit.jsonarchive and credit transparency
Return Channel
Small results can return to the database.
The app can send small scan results back to the Signal Ark database. These results may help review candidate signals, improve package ranking, and prepare future reports.
Source Transparency
Every package must say what it is.
real_open_data
demo_package
simulated_lesson
Simulated or demo packages are always labelled. Interesting does not mean extraterrestrial.
App-only unlocks
Unlocks stay inside the app.
Optional unlocks are handled only inside the iOS/iPadOS app through Apple In-App Purchase. This website does not process payments.
Review loop
Small results can become review materials.
Aggregated results can later be exported for review and possible reporting back to source communities. These exports are review materials, not claims of extraterrestrial detection.
Available now
Signal Ark is on the App Store.
Download the app and begin exploring the noise, structure, and mystery of the radio universe.