App Overview

Clearblue Period Cycle Tracker icon

Clearblue Period Cycle Tracker

SPD Development Company Ltd · Medical

Predict your periods, track your cycles or try for a baby and more with the Clearblue® Period Cycle Tracker app!

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
4.5
289 ratings · Top 15%

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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> SELECT BUILD PLATFORM:

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

// RORK SYSTEM PROMPT
Rork plan preview for Clearblue Period Cycle Tracker: map the core Medical 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 customize symptoms and add notes.

Assumption to check: Limited customization options for tracking symptoms

Validate with people who use this workflow before building.

Hypothesis 2

Provide more detailed graphs and insights on cycle trends.

Assumption to check: Not enough data visualizations for insights

Validate with people who use this workflow before building.

Hypothesis 3

Implement a more intuitive navigation for viewing past cycles.

Assumption to check: Difficult to navigate between cycles

Validate with people who use this workflow before building.

Hypothesis 4

Clarify premium features and provide a better onboarding experience.

Assumption to check: In-app purchases may confuse users

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

Predict your periods, track your cycles or try for a baby and more with the Clearblue® Period Cycle Tracker app! - The app is packed with features to help you learn more about your cycles and symptoms, which you can also track over time. - The Clearblue® Period Cycle Tracker app identifies your peak fertility days and predicts your period due date. - Use Clearblue® Smart Ovulation Test as your partner from trying to conceive to pregnancy! MUST be used with Clearblue® FREE Period Cycle Tracker. - Log your pregnancy test in the app. We respect your PRIVACY - Read our Application Privacy Policy on www.clearblue.com/smart-ovulation-test/privacy-policy or in the app. KEY BENEFITS of using Clearblue® Smart Ovulation Test: - Get pregnant faster1 by identifying your 2 most fertile days - Accurate: 99% accurate at detecting the LH surge - Clear in-app result: Easy to read, no more guesswork For more information visit www.clearblue.com View where you are in your cycle with Clearblue® Period Cycle Tracker. KEY BENEFITS of using the Clearblue® Period Cycle Tracker app: - Cycle overview: view where you are in your cycle. - Predictions: See your 2 most fertile days, predictions for your fertile window and your period due date - Insights: see how the probability of peak fertility varies for women with the same cycle length as you - Log symptoms: log your symptoms and identify patterns in frequency and intensity over time - Track your periods: with period tracking, you can plan for your period - Clearblue® Smart Ovulation Test must be used with Clearblue® Period Cycle Tracker to read your result Why Choose the Clearblue® Period Cycle Tracker app? - User-friendly interface: Intuitive design makes tracking your cycle simple. - Free to use: No in-app purchase necessary - Captures your Smart Ovulation Test result and give you your peak or no LH surge - Designed to log Clearblue® Pregnancy Tests but can be used without pregnancy tests. Tests are sold separately This app is designed for use by women who want to predict their periods, track their cycles or try for a baby. It should not be used as a method of contraception.

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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
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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.