App Store
Version 7.0.4 · 2026-10-28
Low battery reminders: when the app finds a SYGNAL SOURCE puck at 20% battery or less, the session instructor gets an email reminder to charge it. Plus stability fixes and improvements.
Too little checked to say Store information only. We haven’t analysed this app or read its reviews yet.
Not yet tested.
The store currently lists version 7.0.4, updated 2026-10-28.








Store screenshots supplied by the developer.
Train. Respond. Succeed.
SYGNAL turns the phones and tablets your team already carries into realistic gas detectors, so you can run live hazmat, confined-space and CBRN exercises anywhere.
Instructors set the scenario and control every reading. Trainees see a real detector on their screen, walk into hazard zones and respond as they would on scene. Every movement and reading is recorded for review.…
From the developer’s store description.
For developers and the curious
The evidence, sources, measurements and versions behind every label above.
No review analysis published for this app.
“Not assessed” means we could not measure it. It is never a zero and never a pass.
No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence, not a finding.
Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured
Not yet tested. No analysis has been run for this app, so there is no version or date to report.
Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.
Low battery reminders: when the app finds a SYGNAL SOURCE puck at 20% battery or less, the session instructor gets an email reminder to charge it. Plus stability fixes and improvements.
sygnalWhat the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.
From the store listing. Billing terms are read from each purchase’s name — the stores don’t publish them — so treat them as a strong hint, not a disclosure.
These are really on sale; we just can’t tell from the name whether they recur.
Not yet tested. No analysis has been published for this app, so there is no method to describe for it yet. A missing label is not a clean bill of health: it means nothing has been read, not that nothing is wrong.
Write to [email protected], or use the form. Name the finding, the app version and the evidence that needs correcting. Factual corrections are free and never depend on buying anything.