Reserve $1

Portable 3D sonar for lure anglers

See below. Catch above.

Every cast into unknown water is a guess. Drop Kastave in and it cruises the water on its own, mapping the bottom in 3D — so you cast at structure, not at hope.

Kastave sonar floating on lake water
3D structure scan, bottom shape
AI Spots drop-offs, grass, rocks
Smart Cruise Patrols and scans on its own.

Why it matters

Traditional fish finders show echoes. Kastave shows shape.

Reading underwater structure is what separates random casting from confident decisions. Kastave is built for anglers who want to understand the bottom, not just watch a scrolling line.

Find the drop-off before the first cast Separate fish-holding cover from dead water Spend more time fishing the right lane

Core functions

Turn unknown water into lure-fishing decisions.

Kastave is designed around the way lure anglers search water: scan the area, identify structure, mark high-value targets, and cast with a clearer plan.

01

3D structure scan

Build a visual terrain view of depth changes, ledges, holes, and underwater contours instead of reading flat sonar signals alone.

02

AI structure points

Pinpoints likely casting targets such as drop-offs, grass edges, submerged wood, rock piles, and deeper holding zones.

03

Auto scan workflow

Drop Kastave into the water and let it scan the area so bank, kayak, and small-boat anglers can start faster.

04

Mobile map history

View scans on your phone, save productive water, and return to structure that matched real bites on later trips.

Kastave app showing a 3D lake scan while the device floats nearby

Phone-first scanning

Read depth, coverage, battery, and 3D structure from the bank.

The app view is built to answer the questions lure anglers ask before casting: how deep is this lane, where does the bottom drop, where does cover begin, and which part of the water deserves the next cast.

  • Switch between 2D map and 3D structure view
  • Track depth range, water temperature, battery, and scan coverage
  • Mark fish signals and structure changes for repeatable spots
3D underwater structure map showing drop-off, rock pile, grass edge, submerged wood, and deep hole

Structure intelligence

Find the places fish use, not just the dots on a screen.

Kastave highlights the structure that matters for lure fishing: drop-offs for ambush routes, grass edges for cover, submerged wood for holding fish, rock piles for feeding areas, and deep holes for high-reward casts.

  • Separate safe casts from high-risk snag zones
  • Identify productive structure zones before fan casting
  • Use AI structure points to plan smarter search routes

Product comparison

Compare fishing sonar solutions.

Portable sonar shows depth. Boat systems are powerful but expensive. Kastave is built for lure anglers who need structure fast without a complex install.

Kastave advantage

See the structure. Pick the cast.

Other sonar options give you readings. Kastave turns the scan into a 3D structure map with AI-marked casting targets.

3D bottom view Drop-offs, holes, grass edges, rock piles
No boat install Drop in, auto scan, read from your phone
AI structure points Highlights where to cast next
Portable sonar Checks depth
Boat-mounted sonar Requires a serious setup
Kastave Shows where to cast next
Kastave
Portable sonar
Kastave smart fishing sonar
Portable sonar product
Price $699 target launch price From $209.99
Smart Cruise Smart Cruise. Patrols and scans on its own. Manual cast and retrieve
Ease of use Drop in and auto scan Cast and retrieve
Technology 3D sonar + CHIRP + multibeam CHIRP sonar
Sonar visualization
Kastave 3D sonar structure visualization under a bridge
3D sonar + AI structure points
Portable sonar visualization with fish arches and bottom contour
App sonar + depth maps
Castable portable sonar device on a white studio background

Portable sonar

Compact cast-and-retrieve sonar for quick depth checks.

Premium boat-mounted sonar display with side-scan screen

Premium boat-mounted sonar

Powerful installed systems built for dedicated boat setups.

Best for structure decisions
Kastave smart fishing sonar boat product

Kastave

Smart fishing boat system for 3D structure reading and lure decisions.

Auto scan Smart Cruise AI structure points
Feature Portable sonar Premium boat-mounted sonar Kastave
Price From $209.99 $2,000+ setup $699 target launch price
Smart Cruise Manual cast and retrieve Manual boat positioning Smart Cruise. Patrols and scans on its own.
Ease of use Cast and retrieve Boat install required Drop in and auto scan
Technology CHIRP sonar CHIRP + side imaging 3D sonar + CHIRP + multibeam
Sonar visualization App sonar + depth maps Portable sonar visualization with fish arches and bottom contour Dedicated pro display Premium boat-mounted sonar side scan visualization 3D sonar + AI structure points Kastave 3D sonar structure visualization under a bridge

Representative category comparison based on public product positioning and launch targets.

Reserve Kastave for $1

Lure fishing scenarios

Built for the water lure anglers actually search.

From seawalls and bridges to shallow weed edges and rocky river runs, Kastave helps anglers read structure before choosing the next cast.

Lure angler casting near a seawall and breakwater
Seawall structure Read edges, rocks, and current breaks before casting.
Lure angler fishing a lake shoreline with submerged vegetation
Lake weed edges Find shallow cover and transition lines faster.
Lure angler casting beside an urban bridge and canal
Urban canals Target bridge shade, walls, and hidden structure.
Kayak angler fishing on a sunny lake near weed cover
Kayak fishing Scan weed edges, drop-offs, and casting lanes.
Lure angler casting from coastal rocks toward open water
Rocky shorelines Plan casts around rock piles and depth changes.
Lure angler wading in a clear rocky river
River runs Understand pools, current lanes, and submerged stones.

Field proof

When testers found structure,
the fish followed.

Early tester holding a largemouth bass near a lake
“Scanned the bank in ten minutes, found the one lane with a real edge, and fished only that.”

— Kastave field tester · California

Early tester holding a river smallmouth bass with Kastave floating nearby
“The map showed the current break behind the stones. First cast there got hit.”

— Kastave field tester · Indiana

Early tester holding a striped bass at night with Kastave nearby
“At night you can't read water at all. The 3D view was the only reason I knew where the drop was.”

— Kastave field tester · Massachusetts

Limited-time early-bird

Reserve your Kastave Founder Batch spot for $1.

Your $1 reservation holds a priority place before launch and unlocks a $100 early-backer credit toward the planned $699 launch price.

Only 100 first-batch early-bird spots. The $100 launch credit is tied to this first batch and may not be available after these spots are claimed.
23 spots left of 100

When the first batch is filled, the $100 early-bird credit may close.

  • Pay $1 today to hold your early-bird place.
  • Limited to the first 100 reservations in this launch batch.
  • Save $100 later when Kastave opens for final purchase.
  • No automatic $699 charge. We email you before final checkout.
  • Refundable before launch if you change your mind.
Secure checkout Stripe or PayPal
Early access Limited to 100 spots
Launch updates Sent by email

Reservation checkout

Reserve Kastave for $1

$1 today reserves one of 100 first-batch early-bird spots and unlocks $100 credit. No automatic $699 charge. Secure your early-bird place.
Final purchase happens later.

Refundable before launch No automatic final charge

After payment, you will receive confirmation by email. This reservation is not the final product purchase. Email confirmation after payment. This is not the final product purchase.

Skipping the $100 credit for now,
but want updates? Get prototype updates and launch timing without paying today. Join the free waitlist

Roadmap

From field prototype to Kickstarter launch

Now

Field testing and founder reservations

Validate 3D structure mapping, app workflow, waterproof performance, and early-backer demand with real lure anglers.

Late 2026

100 Founder Edition units

Deliver the first 100 founder-version units to early supporters and collect structured field feedback before mass production.

Mid 2027

Mass production and Kickstarter

Move into formal production planning, launch the Kickstarter campaign, and open broader availability after founder feedback is reviewed.

Questions

Pre-order FAQ

What does the $1 reservation include?

Your $1 reservation holds one first-batch early-bird spot and unlocks a $100 credit toward the planned $699 launch price when final purchase opens.

Will I be charged $699 automatically?

No. The $1 reservation is not the final product purchase. We will email you before final checkout, and you can decide whether to complete the order.

Is the $1 reservation refundable?

Yes. The reservation is refundable before final payment collection if you change your mind before launch.

Why is the early-bird credit limited?

The $100 credit is tied to the first 100 launch reservations. After those first-batch spots are claimed, the early-bird credit may no longer be available.

How is Kastave different from 2D fish finders?

Traditional 2D sonar shows signals that anglers still need to interpret. Kastave is designed to turn underwater readings into a clearer 3D structure view for lure-fishing decisions.

What fishing situations is Kastave built for?

Kastave is built for lure anglers searching banks, seawalls, canals, rocky shorelines, grass edges, drop-offs, submerged wood, and other structure-focused water.

Does Kastave help guarantee bigger fish?

No device can guarantee a catch. Kastave helps you read structure more clearly so you can choose better casting targets and reduce blind searching.

Does Kastave need a phone app?

Yes. The intended workflow pairs the device with a mobile app for 3D scan viewing, saved maps, structure points, and trip history.

Can I use Kastave from the bank, kayak, or small boat?

Yes. Kastave is designed as a portable scan system for bank anglers, kayak anglers, and small-boat users who want structure information without a complex installed setup.

When will the first batch ship?

We are currently validating field performance, app workflow, and production planning. Early backers will receive launch updates before final payment and fulfillment.

Where will you ship?

Shipping regions will be confirmed before final checkout based on logistics, taxes, and support coverage. Early backers will receive updates as launch details are finalized.

Which payment methods can I use for the reservation?

You can reserve through Stripe or PayPal using the checkout buttons on this page.