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Live beta

4.7 out of 5 · 3 ratings

Consumer · Mobility tech

Plens helps people leave at the driest moment.

Plens checks the rain along an entire route at the moment you reach each point, instead of reporting one forecast for one place. It compares nearby departure times and answers in a single sentence: go now, leave ten minutes earlier, or take a rain jacket.

Current stage
Live beta · Open sign-up
Next milestone
Commuter pilot
plensapp.nl

One sentence, not a table of numbers.

Plens compares nearby departure times along the whole route and answers with the one that keeps you driest.

Real app screen · example data

The problem

A forecast for your town says nothing about your route.

A ten-kilometre ride takes half an hour, and the shower moves during that half hour too. Most weather apps report one place and one broad window, so the rider still has to guess whether leaving a little earlier changes anything.

The solution

Route-aware rain advice, reduced to one clear decision.

Plens cuts the trip into segments and works out what falls on each one at the moment you are there. Within the room you allow it, it shifts your departure time forward and back, and it only pushes a notification when the advice actually changes.

Audience

People who go outside on a schedule, starting with Dutch commuters.

Daily commutersE-bike commutersRunners and walkersEmployersMobility providers
Business model

Free during the beta; a partnership model under validation.

TodayFree, no ads
ModelUnder validation
Initial routeEmployers and mobility providers
How it works

Your trip, in three steps.

The same three screens the product explains itself with, on the same three surfaces: the route, the departure moment and the notification.

  1. 01

    Your whole route, not one point

    Plens looks at the rain along the entire route at the moment you pass each point, so your own pace counts too.

    Plens screen showing a map of the route with the wet stretch marked between 08:26 and 08:30, plus shelter points along the way
  2. 02

    A little earlier, a lot drier

    Within the room you allow, Plens finds the driest departure moment and shows what leaving earlier or later actually buys you.

    Plens screen recommending departure at 08:05 instead of 08:15, with alternative departure times and advice to pack a rain jacket
  3. 03

    One nudge, and you know enough

    The advice arrives on your phone before you leave. By default only when it changes, so nothing has to be opened.

    Plens notification settings screen with push enabled for changed advice and email switched off

Real app screens with example data, in the product's own phone mockup. Dutch interface; English is available in the product.

Who it is for

Four people, four reasons to be outside.

Plens is built around four riders rather than one generic commuter, because the same shower is a different problem for each of them.

  • Kim, in a yellow rain jacket beside a Dutch city bike
    Commuting by city bike

    Kim

    Leaves at a fixed time for a fixed arrival, and wants to know whether ten minutes earlier is worth it.

  • Siënna in running kit
    Running a round

    Siënna

    Has a window rather than a deadline, so the question is which half hour in it stays dry.

  • Bert in cycling kit beside a road bike
    Road cycling

    Bert

    Covers enough ground that the shower over the start says nothing about the shower at the turn.

  • Jan walking with his dog Bikkel
    Walking the dog

    Jan & Bikkel

    Goes out several times a day and only needs to know which of those trips needs a coat.

The product's own cast, as it appears on plensapp.nl.

Stage & milestones

Where Plens is today

Updated Q3 2026
Built · Done
Core product
Route-aware rain calculation, departure-time comparison, accounts, a mobile web interface and notification logic.
Now
Live beta at plensapp.nl
KNMI radar, Open-Meteo, OpenRouteService and PDOK are connected in production, with cycling, running and walking, and shelter points in beta.
Next
Commuter pilot
Test forecast trust, false alarms and notification reliability with a small group of Dutch commuters.
Later
Mobility partnerships
Validate distribution through employers, mobility providers and cycling programmes.
Get involved

Leave at the driest moment.

Try Plens on a ride you already make, or talk to Studio Northstar about a commuter pilot.