Boating LogBook
DROP THE ANCHOR- LOG THE DETAILS -
isiziba is a boating logbook and anchoring companion for mobile phones and tablets. Log every passage, keep your vessels on file, watch your sea time add up, and work out how much anchor rode to let out. It all stays on your own device and works offline, with no account and no subscription.
The name comes from the isiZulu for a deep pool, a fitting name for an app that lives on the water.
Every Passage. Every Anchorage. All Yours.
Android version coming soon on Google Play.
Open isiziba and your totals are waiting: trips logged, hours at sea, distance and expenses. From there it's one tap to the Trip Log, your Sea-Time Summary, a new vessel or Anchor Rode, with Record a New Trip right below.
Record each trip in as much or as little detail as you like: vessel and role, departure and arrival, distance, engine hours, fuel and water, conditions and the skipper's sign-off. Only the basics are required, and a Minimal trip takes seconds. Missing an activity or a crew role? Add your own to the list and it's there next time.
Hours, miles, tidal miles and days at sea add up by themselves, along with qualifying passages, offshore trips, overnight passages and your time as skipper. Carry over earlier experience so the totals show your whole time at sea.
Save each vessel once (hull, dimensions, engines, tanks, registration and MMSI), then pick it for every trip. Metres or feet, kilograms or pounds: switch units and your figures convert. Add your own hull materials, engine makes, fuel types and more, and they're ready for every vessel.
Enter the tides from your tide table, your depth and your scope, and Anchor Rode works out how much rode to let out for the whole stay, allowing for the highest water. Pick a saved vessel and its transducer, bow roller and draft fill in for you.
The Depth Profile shows how the water rises and falls from arrival to departure, with your draft drawn to scale and a clear warning if you would touch bottom. Your Numbers at Arrival explains every figure: what you entered and what was calculated.
Add your boat's draft and Anchor Rode checks the whole stay, not just your arrival. If low water will leave too little water under your keel, the calculator warns you in plain words, with the time of low water and how far short you would be, and the Depth Profile turns the curve red where the boat grounds.
No account, no cloud, no tracking, no ads and no subscription. Your logbook stays on your device and works with no signal at all. Make a backup file whenever you like and keep it wherever you trust.
About a minute and a half, start to finish: browse the Trip Log, record a detailed trip and check your totals, then let Anchor Rode work out the rode for your stay, explore the Depth Profile, get a clear warning if low water would leave you aground, and switch from metres to feet. Recorded on an iPad with sample trips and vessels.
isiziba is available now on iPhone and iPad — a one-off $9.99 on the App Store, yours to keep, with no subscription and no ads. Android phones and tablets will follow on Google Play.
isiziba is a private, offline app for keeping your own boating logbook — recording where you went, when, with whom, and what each trip cost — and for working out the anchor rode you need when you enter valid tide information. This policy explains what the app stores, how your information is protected, and the terms for using it.
Read the full Privacy & Use Policy ›
Offline Card Storage
Bank cards, IDs, driver's licence, medical aid, frequent-flyer, and any other card usually overloading your wallet? isitaki keeps a private copy of all of them on your phone, so the details are with you even when the card isn't. Everything stays on your device: no accounts, no cloud, no sign-up — and it works completely offline.
Pilot Pocket Partner
COMING SOON
A quick, offline second check for pilots, from light aircraft to corporate jets and airliners, and handy for engineers and ground staff too. Confirm fuel and weight calculations, de-icing holdover times, China and Russia special altimetry settings and everyday conversions, and decode weather reports before you commit.
Email hello@ambersplash.com for any assistance, general inquiries or feedback related to isiziba.