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Test one app for 14 days. Leave your email, we do the rest.

We make free, offline-first apps for working seafarers. Google Play will not let us publish until real testers have used an app for two weeks — not just installed it. Pick the one you would actually open at sea, use it a few times, and tell us what is wrong.

What you get: 3,000 community points (about USD 23) on day 15 — enough for DG Pro, SDM Pro, MSI Pro or the SJW Pro pack, or for documents and routes other officers sell in the market.
What we ask: one app, open it a few times over 14 days, don't opt out before day 15. That is the whole favour — no reports, no forms. You get two emails from us in total: the link on day 0, and “you're done” on day 15 (points land automatically if the app saw you sign in; if not, that email says how to claim them with one reply).

1Leave the Google account email your phone uses

That is the address Google Play needs to let you into the test. You get a welcome email right away with your two links — one tap to join the list, one tap to “Become a tester”. We use the address for nothing else.

What happens to what you type here

  • Collected: your email, country, and the optional rank note
  • Used for: adding you to the Google Play closed-test list, and contacting you about the test and your reward
  • Shared with: Google, only your email, and only because Play needs it to let you into the test
  • Kept until: the test ends or you ask us to delete it — whichever comes first. Write to [email protected] any time and it is gone
  • You can say no. Then we simply cannot add you to the test — there is no other consequence

In a hurry and already signed in to Google on this phone? Send the pre-filled subscribe email or open the group page and tap Join group — that puts you on the list within minutes without waiting for us. (Email route: Google answers with a “Confirm your subscription” mail — reply to it, any text, and you are in.)

2Pick your app and tap “Become a tester”

One app is enough. Open the link on the same phone. If Play says “not available” for the first few minutes, that is just the list syncing — try again after a short wait, then install.

Seafarer Job Wizard Deck officers · 13 offline navigation calculators, OCR scan Become a tester →
Your 14 days
  1. Run the squat calculator with your own ship's draft and speed.
  2. Try any second calculator you use on watch (ETA, UKC, tides…).
  3. Scan one page of any document with the OCR tool.
DG Segregation Container / cargo officers · IMDG segregation checker, bay plan Become a tester →
Your 14 days
  1. Check segregation between two UN numbers you have carried.
  2. Open the bay plan and place two dangerous-goods containers.
  3. Rotate the phone to landscape once and see if anything breaks.
MSI MAP Anyone on the bridge · navigational warnings on an offline map Become a tester →
Your 14 days
  1. Find the warnings for the area you are sailing in now.
  2. Open one NAVTEX message and check it reads correctly.
  3. Switch the phone to flight mode and open the app once.
Ship Drawing Map Engineers and mates · drawings and manuals, searchable, fully offline Become a tester →
Your 14 days
  1. Add one PDF drawing or manual from your phone.
  2. Search for a word you know is in it, e.g. “pilot ladder”.
  3. Double-tap a drawing to zoom and pan around it.
New here? The full tester guide — what to do on day 1, days 2–14, how to reply, how the points work — is one page: Tester guide, step by step →

Tell us what broke

Once a week the group gets a short email with that week's task. Reply to it with one line or a screenshot — “this button did nothing”, “this number looks wrong”, “I could not find X”. Anything counts.

Every note gets a number and shows up in the next update's release notes as “tester note #n”, so you can see it was fixed. Prefer email? [email protected] works the same way.

Google counts 14 consecutive days. If you opt out in the middle, your days start over — so please stay in until day 15 even if you only open the app a few times. On day 15 we email you once more and the points are yours.

All four apps are free to install, with no ads and no tracking SDK — the core tools work without paying. Some advanced features are optional paid unlocks (Pro packs), which is what your reward points can cover. Your vessel data, imported files and drawings stay on your device; for Ship Drawing Map there is no server path for them at all.