App Overview

Spearo: Spearfishing Forecast icon

Spearo: Spearfishing Forecast

Diana Dryn · Weather

No ads, no sign-up.

Free

PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
★ 2.4
8 ratings · Below Average

Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.

Build your own version

Build Kit

Make this idea yours

A product spec, screen plans, and build steps for your coding agent.

First kit free with a verified email

Add to a Remix

Combine features and design from your favorite apps.

Your first Build Kit is free with a verified email.

What's included

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
Preview a sample Build Kit No email needed

Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

Feature spec

Goal: Send a clear invoice after finishing a job.

  • Add a client, line items, a due date, and payment instructions.
  • Preview the total before exporting a PDF.
  • Keep an editable draft if export fails.

Screen plan

Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.

States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.

Differentiate and validate

Hypothesis: Contractors need faster repeat invoices more than more templates.

First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.

The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.

Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.

JavaScript is required to complete mailbox verification.

Free quick prompt For a smaller starting point

Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Spearo: Spearfishing Forecast: map the core Weather workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

Preview ready. Verify your email to reveal and copy the full prompt.

JavaScript is required to complete mailbox verification. Return to this prompt preview.

Continue in Rork copies the full prompt to your clipboard first, then opens Rork in a new tab.

Continue in Rork >

Affiliate link: CloneChart may earn a commission at no extra cost

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

Screenshots

< Scroll to see more >
App Store description

No ads, no sign-up. Offline, you still see the last forecast loaded for cities and points you've already opened. See whether it's worth getting in the water today. Spearo (spearo.app) covers spearfishing and freediving in 2,600+ coastal cities across 60+ countries. The forecast comes from our own ML model, which weighs dozens of factors, including swell, wind, tides, rain and water temperature. Most of us check three or four apps before a dive: wind in one, swell in another, tides in a third. Then we drive to the beach and find murky water anyway. Spearo checks swell height and period, wind, visibility and tides to give you a daily verdict before you leave home. Green: there's a window to dive today, and you can see which hours. Yellow: borderline. There's less time to dive and less room for error. Red: there's a good reason to wait, and Spearo shows the next good day. Water visibility forecast Spearo predicts visibility on your coast in meters. Our own ML model works it out from dozens of factors, including swell, wind, tides, rain and water temperature, so a stirred-up sea won't surprise you at the entry point. Murky water doesn't always mean there are no fish, and whether you go in is up to you. Seafloor map & no-take zones A satellite map of your coast with depth contours, plus seafloor detail where we have it, so you can read the bottom before you get in. Marine reserves and no-take zones in 25 countries are marked on the map. They're shown for information only, so always check the current local rules. Tides, swell & wind An hourly marine forecast: wave height, swell period, wind speed and gusts, water temperature, visibility and an hourly tide chart. It runs up to 7 days ahead. The first days are free and the full week comes with Pro. Spearfishing spots 8,000+ mapped spots along the coast (reefs, wrecks and ledges), each with its own forecast. Some spot forecasts require Pro or Ultra. My points Save your own points anywhere on the map: 3 free, 5 with Pro, 10 with Ultra. A reef, a drop-off, a mark you keep to yourself. Spearo builds a full 7-day forecast for those exact coordinates. Dive log After a dive, note what the water was really like: first how well the forecast matched, then visibility in meters, waves and fish activity. Over time you'll see how your spot behaves. Home Screen and Lock Screen widgets Put the week strip and the verdict on your Home Screen, and see today's answer on your Lock Screen. Home Screen widgets can follow your city or any saved point. Alerts A short morning digest for your city or your points, and a heads-up when today's verdict is green at a point you follow. Alerts for one location are free; follow more with Pro. You can manage the morning digest and dive alerts in Settings. Fish & safety Local fish species, minimum sizes where available, and official sea warnings where they're issued. Who it's for Spearfishing · freediving · apnea · snorkeling · open-water swimming · kayak & SUP · rock and shore fishing. For anyone who wants to know what the sea is doing before getting in. Coverage 60+ countries, 2,600+ coastal cities: Portugal, Spain, Italy, Greece, Croatia, France, Turkey, USA, Mexico, Brazil, Chile, Peru, Argentina, Australia, New Zealand, South Africa, the Philippines and more. Spearo is available in 9 languages. Some features require a Spearo Pro subscription. Subscriptions renew automatically through the App Store unless canceled. You can manage them in your Apple Account settings. The yearly Pro plan comes with a 7-day free trial; other plans have no trial. If you start it, cancel in your Apple Account settings at least 24 hours before it ends and you won't be charged. Forecast limits A forecast is a guide and it can be wrong. Check conditions on site, respect local rules and seasons, and never dive alone. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Written user reviews are not shown here. Check current App Store reviews >

Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.

Hypothesis 1

Enhance location database and provide more accurate forecasts.

Assumption to check: Limited location data for some areas

Validate with people who use this workflow before building.

Hypothesis 2

Implement a consistent design language and improved aesthetics.

Assumption to check: Inconsistent user interface design

Validate with people who use this workflow before building.

Hypothesis 3

Include more detailed metrics like water temperature and tide information.

Assumption to check: Lack of detailed weather information

Validate with people who use this workflow before building.

Hypothesis 4

Focus on thorough testing and bug fixes before launch.

Assumption to check: Low user ratings due to bugs

Validate with people who use this workflow before building.

Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

SUGGESTED BUILD STACK
React Native
Expo
Axios
React Navigation
React Native Async Storage
Expo Location
BUILD KIT DIFFICULTY

Not assessed in a Build Kit yet.

A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.