TroKat Travelers logoTroKat Travelers
Bespoke travel companion apps

The whole trip, in their pocket โ€” even with no signal.

A custom-built app that turns a three-week, multi-country journey into one calm, offline-ready guide. Every stay, every route, every reservation โ€” verified and waiting the moment they land.

21days ยท 20 nights
2countries
24mapped stops
0-signalworks fully offline
2 phonessynced in real time
Who it's for

One link that holds the whole trip.

๐Ÿ’

Wedding & destination venues

Give every guest one link that carries the whole weekend โ€” arrivals, shuttles, dress codes, the map, the meal, the after-party. No paper, no group chat chaos.

๐Ÿงญ

Travel agents & planners

Hand clients a branded companion instead of a PDF that dies in their inbox. Every booking, confirmation, and route in a guide that works on the plane and off the grid.

๐ŸŽ

An unforgettable gift

The most thoughtful thing you can give a traveler you love โ€” their entire trip, built by hand, with little surprises tucked in to open along the way.

What makes it different

Not a brochure. A companion that actually holds up on the road.

Offline-first

Opens with no signal

On the plane, in the mountains, before the SIM connects at the airport โ€” it just opens. The moment they most need the address is the moment they have no data.

Live sync

Two phones, one trip

Favorites and shared notes sync between both travelers in real time. One hearts a restaurant; it appears on the other's phone. Taps made offline queue up and reconcile when they reconnect.

Verified

Every detail checked, not guessed

Opening hours, ticket prices, closing days, senior rates โ€” checked against live sources. A verification pass caught closed restaurants, a wrong price, and a landmark that no longer exists, before a traveler ever hit them.

Tailored

Custom dietary & lifestyle flags

Allergen, dietary, or no-alcohol requirements surfaced in bold red exactly where they matter โ€” including the hidden ones a menu won't warn you about.

Wayfinding

A real, tappable map

Every stop of the journey pinned and color-coded, tap for the details, no account and no per-view limit โ€” and it renders offline like everything else.

Their pace

A menu, never a rigid plan

Every town is a set of options they mark as they go โ€” they build their own days. Plus little date-locked notes that open on exactly the right morning.

A real build โ€” anonymized sample

21 days. Two countries. Nine stays. One app.

This is an actual delivered build, with the travelers and their private details removed. Every stay, drive, and day-trip lived in a single guide that worked start to finish without a signal.

Days 1โ€“5Lisbon ๐Ÿ‡ต๐Ÿ‡น

Lisbon

Penthouse with a city-center view ยท Avenida da Liberdade
Arrival & welcome dinnerSintra โ€” private guideCascaisWedding at a Sintra estatePool brunch
STAY REF ยทยทยทยท-A1 ยท 5 nights
Day 6Nazarรฉ

Nazarรฉ

Sweet Dreams guesthouse ยท Rua Sub-Vila
via PenicheAlcobaรงa โ€” Pedro & Inรชs tombsFunicular to Sรญtio
STAY REF ยทยทยทยท-B2 ยท 1 night
Days 7โ€“9Porto

Porto

Apartment on Rua Formosa
via Aveiro โ€” canals & moliceiro boatsRibeiraSรฃo Bento
STAY REF ยทยทยทยท-C3 ยท 3 nights
Day 10Ponte de Lima

Ponte de Lima

Flowers to Faces guesthouse ยท Rua Dr. Francisco Sรก Carneiro
Roman bridgeGarden festival
STAY REF ยทยทยทยท-D4 ยท 1 night
Days 11โ€“12Santiago ๐Ÿ‡ช๐Ÿ‡ธ

Santiago de Compostela

San Francisco Hotel Monumento ยท Campillo de San Francisco 3
via Braga โ€” Bom JesusPeneda-Gerรชs national parkThe Cathedral
STAY REF ยทยทยทยท-E5 ยท 2 nights ยท heated pool
Day 13Porto (return)

Porto โ€” second stay

Architects' apartment ยท Rua Calouste Gulbenkian
via Combarro โ€” hรณrreosPontevedra old town
STAY REF ยทยทยทยท-F6 ยท 1 night
Day 14Coimbra

Coimbra

Apartment in Santa Clara
Biblioteca Joanina โ€” timed entryUniversity hill
STAY REF ยทยทยทยท-G7 ยท 1 night
Days 15โ€“19Albufeira

Albufeira ยท the Algarve

Apartment at Praia dos Aveiros
SagresCape St VincentSilves castleRia Formosa boat
STAY REF ยทยทยทยท-H8 ยท 5 nights
Day 20Airport

Lisbon Airport

Star Inn Lisboa Aeroporto ยท free shuttle
Road trip up the coastFly home next morning
STAY REF ยทยทยทยท-J9 ยท 1 night
โœˆ๏ธ Flights: TAP Air Portugal ยท Newark โ‡„ Lisbon ยท conf ยทยทยทยท-XX
๐Ÿš— Car: SIXT ยท Lisbon Airport pickup & return ยท res ยทยทยทยท-XX
๐Ÿ“ 24 stops pinned on the in-app map
Note: a genuine delivered itinerary shown as a sample โ€” traveler names, real confirmation codes, personal contact numbers, and private details have all been changed or removed. Hotels and public places are kept to show the real depth of the build.
Packages

Two products. Buy one, or bundle both.

Pricing is yours to set โ€” the tiers below are the structure.

Core

The Trip App

$โ€” / custom build
  • Fully custom, single-link app
  • Every stay, route & reservation
  • Works offline, installs to the phone
  • Live map + real-time sync
  • Verified content pass
Add-on

The Globe

$โ€” / add to any app
  • An interactive 3-D globe of the journey
  • Watch the route trace stop to stop
  • Bolts onto an existing Trip App
  • Sold separately, or as an upgrade
Best value

App + Globe Bundle

$โ€” / everything
  • The full Trip App
  • The Globe built in
  • One combined experience
  • Best per-trip value
For partners & investors โ€” how it's made

The polish is the product. Here's what's under it.

A gift-shaped surface over serious engineering. Built to be correct when it matters โ€” landing in a foreign country with no data, on the one day a reservation is due.

Form
Installable web app (PWA) โ€” adds to the home screen, no app store, no download friction.
Stack
Hand-written HTML / CSS / JS โ€” no framework, no build step. Realtime backend for shared state. Global CDN hosting.
Offline
Network-first service worker โ€” always fresh online, fully usable with zero signal. A redeploy reaches travelers the next time they open it.
Sync
Two-device real-time sync with an offline write queue โ€” taps made off-grid reconcile on reconnect, last-write-wins per item.
Map
Open-source mapping โ€” every stop pinned, no API key, no view cap, renders offline.
Access
18px base type, high-contrast, tuned viewport, maskable icons โ€” built for real thumbs on a real phone.
PWAService WorkerRealtime DBCDN deployLeaflet mapsZero-frameworkSingle file

01Correctness over convenience

A repeatable verification pass re-checks every place against live sources. It has caught restaurants closed on the exact arrival day, a permanently-shut landmark still being recommended online, and a confirmation code mangled in transcription โ€” each one a real trip-day failure, caught in the build.

02Hunting the silent bugs

The dangerous failures don't crash โ€” they quietly do nothing. Date-locked surprises and offline writes are validated by simulation, running every trip date through the logic, rather than trusted by eye.

Principle: if nothing errors but nothing happens, that's the worst bug โ€” so prove it works before the day it has to.

03Built to update, safely

Structural invariants are checked after every edit; content accuracy is a standing checklist. The single-file core stays simple on purpose โ€” easy to maintain, fast to deploy, hard to break.

04Designed for one job

It offers a menu, not a machine-invented schedule โ€” the travelers build their own days. Restraint is the design: one good guide that does a few things perfectly beats an app that buzzes all day.

For investors: the full technical write-up โ€” architecture, the offline sync model, the QA process, and the reusable build system behind each custom app โ€” is available on request.