A quiet, obsessive logbook for the people who jump out of airplanes on purpose. Every second of freefall, every signature, every grid reference — kept.
Six primitives, composed carefully. Built atop Firebase Data Connect and a KMP core that runs natively on phone, watch, and desktop.
Record every skydive with full telemetry — exit altitude, freefall time, canopy, gear, weather. Your entire history, always at your fingertips.
Track rigs, reserve pack dates, AAD service cycles, and gear history. Never miss a mandatory inspection again.
Browse verified coaches and instructors. Book 1-on-1 sessions, collect digital sign-offs, and track your progression.
Each coach signature is Ed25519-signed and hash-chained. Altering any jump breaks the chain, visibly.
Discover dropzones worldwide. See real-time jump activity, weather, and connect with local skydivers before you arrive.
Migrate from Paralog or Parasport in one click. Import Garmin FIT files for rich altimeter telemetry.
A logbook is a legal record. If it can be tampered with, it isn't a logbook — it's a scrapbook. We spent six months getting this one thing right.
Each coach signature is Ed25519-signed and hash-chained to the previous. Altering any jump breaks the chain, visibly. Not even SkyLog can forge one.
We record what happened. We don't replace your altimeter, your AAD, your packer, your instructor, or your judgement at 2,500 ft.
For your first 50 jumps. Logbook, signatures, one gear loadout.
Per month, billed annually. Everything, for every jumper.
For coaches and instructors. Students + income tracking.
If your question isn't here, email help@skylog.app. Real person, under 24 hours.
Yes. No trial, no credit card, no gotchas. The first 50 jumps in your SkyLog logbook are free forever — signatures, gear, exports, the lot. After that, €6/mo keeps it unlimited.
You export it. One click, three formats — CSV, FIT, or a full JSON archive including every signature and media file. Then you close your account and we delete primary copies within 30 days, backups within 90.
No. We don't sell data, we don't run ads, we don't aggregate your jumps for a 'research partner.' SkyLog is paid for by jumpers paying for SkyLog.
In most jurisdictions, yes — USPA, APF, FFP and SFF recognise SkyLog as a valid digital logbook. Check with your own federation. If you prefer belt-and-braces, the PDF export is signed and printable.
Every coach has an Ed25519 keypair tied to their account. When they sign a jump, we hash the previous jump's signature into the new one — forming a chain. If anything alters a past jump, the chain breaks, visibly, and we can't repair it.
SkyLog is offline-first by default. Log jumps, invite coaches, attach media — all works on the ground with no connection. When you next have wifi, it syncs in the background.
Yes to all four. The core is built on Kotlin Multiplatform: the same logbook engine runs on iOS, Android (Compose), WearOS (wrist altimeter), and the web.
Send us photos of every page. We return a SkyLog-format JSON within 48 hours, marked 'imported · unverified' until you sign off on each jump. Free for paid-tier users, $1/jump for free-tier.
Six skydivers across four countries, bootstrapped. No growth mandate, no investor pressure to ship a freemium wall next quarter. We're in this for the decade.
30 minutes, one real skydiver on the call. Coach rosters, gear-compliance alerts, federation reporting — we'll shape it around your operation.
SkyLog is in private beta. Fifty invites go out every Thursday, starting with the jumpers who fly the most.