App Overview

Swim PB icon

Swim PB

carl owen · Sports

Swim PB is used to keep a historical record of a swimmer's (or a group of swimmers') times.

$0.99 · In-app purchases

PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.4
7 ratings · Top 30%

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

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Rork plan preview for Swim PB: map the core Sports 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

Provide detailed graphs and insights into performance trends.

Assumption to check: Limited analytics on swim performance

Validate with people who use this workflow before building.

Hypothesis 2

Add functionality to share swims on social media.

Assumption to check: No social features to share achievements

Validate with people who use this workflow before building.

Hypothesis 3

Implement voice input or faster data entry options.

Assumption to check: Inconvenient input methods for swim data

Validate with people who use this workflow before building.

Hypothesis 4

Allow users to customize swim types and events.

Assumption to check: Lack of customization for swim types

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

Swim PB is used to keep a historical record of a swimmer's (or a group of swimmers') times. When a time for an event (e.g. 50 freestyle, Short Course Metres) is entered for a swimmer, the app compares the time to the one previously stored for this event and informs the user if the time is faster, slower or no time exists for the event. In addition to the list of all a swimmer's times, a list of the swimmer's current Personal Best times for all events can be shown (these times can also be sent out via email from the app). Plots of a swimmer's results over time can also be displayed. Targets can also be added (via the 'Swimmers' menu - 'Show Targets'). An example target might be 'IAG div 2 male age 12-13' which would contain the target times for all events for Irish Age Group, division 2, male ages 12-13. The required target for a swimmer would then be selected from a list in the 'Personal Best Times' view. For each event in the list, the relevant time would be shown from the target, along with the difference between the PB time and the required time for that event. List items (from the 'Swimmers', 'Targets' and associated times) can be re-ordered and deleted using the 'edit' button - to delete a swimmer or time, click the red icon to the left of the item, to drag a swimmer or time to another location in the list use the 'drag' bar to the right of the item. Individual times can be modified by selecting the required time from the list (without needing to select the 'Edit' button).

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Screenshots

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Build scope

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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
Starter

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.