Loggerfish › Switching from another app
Your MySSI logbook in Excel, and in a logbook that does more with it
SSI’s spreadsheet gets your dives out. Loggerfish reads that spreadsheet as it is, with no columns to match, and adds what a spreadsheet cannot: SAC trends, seasons, a map of your sites, sync across devices and an export to Excel or UDDF whenever you want one.
Getting the spreadsheet
The logbook can be downloaded from my.DiveSSI.com as a spreadsheet, either .xlsx or .csv. The site sits behind a sign-in, so this rests on an export made in September 2026 rather than on a page anyone can read, and SSI’s own help pages do not describe the download. The menu names may differ from what you see.
Checked 22 October 2026 · Source: my.DiveSSI.com · my.DiveSSI.com FAQ
- If you log dives in the MySSI app, sync it first so the website has every dive. SSI’s FAQ puts this behind the gear icon, under settings and sync.
- Sign in at my.DiveSSI.com in a web browser.
- Open your logbook and download it as a spreadsheet. Keep the file exactly as it arrives.
Opening it in Excel
An .xlsx or .csv file is an ordinary spreadsheet, so Excel, Numbers, LibreOffice and Google Sheets all open it. Keep the original untouched and work on a copy.
What you get with Loggerfish
| What | What you get | Plan |
|---|---|---|
| Export | Excel, UDDF and a full backup, whenever you like | Free, for good |
| Import | SSI spreadsheet, Garmin .fit, Subsurface logs, UDDF, any spreadsheet; a type-or-paste grid for the PADI app | Free |
| Sync | Your logbook on all your devices | Free |
| Offline | Log a dive with no signal; it syncs when you are back | Free |
| Planning aids | Nitrox, no-stop limits, minimum gas, weighting, gas blending, best mix (aids, not a dive computer) | Free |
| Analysis | SAC trend, forecast against your yearly target, seasons, conditions and gas, sightings life list | Pro |
| Dive-site maps | Your dives on a map, and sites near yours | Pro |
| Dive passport | Certification cards, insurance, medical fitness and your last dive on one screen that works with no signal; kept on your device, not uploaded | Pro |
| Dive computer download | Download dives over Bluetooth from a Mares Sirius or a Shearwater Peregrine TX on iPhone; other dive computers come in as files | Pro |
| Languages | English, German, Spanish, French, Polish | Free |
Pro is €4.90 a month or €29 a year, with 14 days free on every new account. Prefer to pay once? Lifetime Pro is €99, for the first 500 buyers or until 90 days after launch. Logging, import, export and sync are free either way.
Loggerfish reads the spreadsheet as it is and shows a preview before anything is saved. Dive number, site, country, date and time, length, depth, dive type and who verified the dive come across.
Import your MySSI spreadsheet in a minute
Free to start, no card. Your logbook, and every export of it, stays yours on every plan.
PADI, SSI, MySSI and Subsurface are names of their owners, used here only to say which app we mean. Loggerfish is not affiliated with, endorsed by or sponsored by any of them. What this page says about them is taken from their own public pages, listed beside each statement with the day it was checked; apps change. If something is out of date, write to support@loggerfish.com and we will correct it.