App Overview

Prolost Watches icon

Prolost Watches

Prolost, Inc. · Lifestyle

My name is Stu

$19.99 · In-app purchases

PRICE
$19.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
5.0
7 ratings · Top 5%

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.

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Build Kit

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

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What's included17 files

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

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
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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.

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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 Prolost Watches: map the core Lifestyle workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

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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

Allow users to create and customize their own collections.

Assumption to check: Limited customization options for watch collections

Validate with people who use this workflow before building.

Hypothesis 2

Incorporate sharing options to social media.

Assumption to check: No social sharing features

Validate with people who use this workflow before building.

Hypothesis 3

Introduce a subscription model with a free trial.

Assumption to check: High price point may deter users

Validate with people who use this workflow before building.

Hypothesis 4

Enable user reviews for watches to enhance trust.

Assumption to check: Lack of user reviews or ratings

Validate with people who use this workflow before building.

App evidence

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

App Store description

My name is Stu. I did not set out to become a watch collector, but the hobby has captivated my attention and held it for years. I made Prolost Watches not to quantify my fascination, but to elevate my enjoyment of it. • Every watch I own is entered into the app. Every detail I want to remember, in one place. • Every day I wear a watch, I log it. Over time, this reveals insights. In the moment, it adds to the ritual and intentionality of choosing a watch for the day. • Throughout the day, I check the app. It surfaces memories of watches and my adventures with them. It helps me enjoy the watches I’m not wearing today — even ones I’ve let go. • If I snap a wrist shot, I add it to Prolost Watches. These moments appear on the Map and in the Events timeline, and bubble up later for ongoing enjoyment. • Every turn of the calendar page, I enjoy the Manifest, a report of my activities and wear habits for the previous month. • When I sell a watch, I log that too. My watch finances keep track of themselves. Prolost Watches is a one-time purchase. There’s no subscription, no ads, no account. Your data is secure and private, and never leaves your device. I hope you’ll find, as I have, that Prolost Watches is more than a tool. It’s a way to hold your entire collection in your hand. To understand it, manage it, illuminate it. But most importantly, to enjoy it.

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

Screenshots

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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.

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BUILD KIT DIFFICULTY
Intermediate

From the Build Kit assessment.

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.