App Overview

Period Tracker Deluxe icon

Period Tracker Deluxe

GP Apps · Health & Fitness

Period Tracker, the easiest way to track your health!

$9.99 · In-app purchases

PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.9
10,802 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.

First kit free with a verified email

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Combine features and design from your favorite apps.

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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/
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.

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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 Period Tracker Deluxe: map the core Health & Fitness 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 add custom symptoms and track them.

Assumption to check: Limited customization options for tracking symptoms

Validate with people who use this workflow before building.

Hypothesis 2

Introduce social sharing and community support features.

Assumption to check: Lack of community features

Validate with people who use this workflow before building.

Hypothesis 3

Provide flexible subscription options based on user needs.

Assumption to check: Static subscription model

Validate with people who use this workflow before building.

Hypothesis 4

Implement customizable reminders for menstrual cycle events.

Assumption to check: Absence of reminders or notifications

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

Period Tracker, the easiest way to track your health! *Now supports HealthKit, 3DTouch, TouchID, portrait charts, data share with your partner, Advanced TTC Mode (the easiest way to get pregnant by following the homepage timeline’s simple prompted instructions!), and Pregnancy Mode with articles and week-by-week images. Period Tracker is SIMPLE and CUTE. * Press a button at the start of your period every month. Period Tracker logs your dates and calculates the average of your past 3 months' menstrual cycles to predict the start date of your next period. * View your current and future period dates, ovulation and fertile days, moods, symptoms, weight, temp, and fertility notes in a simple month-view calendar. * Discreet iPhone icon simply reads "PTracker." Period Tracker is FILLED WITH FEATURES. * Take daily notes of menstrual symptoms including Spotting, Flow, Cramps, Headaches, Backaches, Bloating, Tender Breasts, and Body Aches! * Track your weight, temperature and moods (over 30+ moods to choose from!) * Add custom symptoms and moods * Month-view calendar features intimacy, symptoms and moods icons mapped right onto the calendar. * Charts! Beautiful, comprehensive and handy. Charts show weight, temp, symptoms, period length, cycle length, and more. * Monthly automatic online Backup/Restore feature or you can backup manually. * Homescreen shows your predicted ovulation, eight day "fertile window,” and your cycle day. Great for trying to conceive. * Pregnancy mode activates countdown to baby's due date and week-by-week articles. * Protect your privacy with TOUCH ID or with a passcode option that is fast and easy. * Ask other women for health advice right from your app! New social groups include Acne, Indigestion, Cramps, Backaches, Dizziness, Insomnia, Nausea, Weight Loss, Eat Healthy, Stress Less, TTC, Pregnancy, Parenting, Diabetes, Depression, Menopause, and more. * Notes list view where you can view, edit, change date, delete and email individual notes * Export your period dates and notes to email for doctor's visits. * 12 beautiful skins for free Period Tracker is loved by millions of users. MommaRed - "I really like this application. It is easy to use, easy to track and plan for upcoming events. The recent updates have made it even better. One of my favorite iPhone apps." Blanczz226 - "This is one of my favorite apps. I use it every month and it's extremely accurate. Worth the $ for sure" GeekSugar.com - "Period Tracker is the ultimate menstrual mentor. You enter in your info, and it tracks your cycles, letting you keep notes about your activities and well being, all the while using twee 'lil hearts .and flowers to denote important days." Celstemc - "One of my first apps and I am completely in love with it! Won't use another one like it!! Cute and easy to use!" Disclaimer: Period Tracker period and fertility forecasts may not be accurate and should not be used to prevent unwanted pregnancy. To forecast ovulation Period Tracker calculates 14 days before the projected start date of one's next period. Forecast accuracy depends on a number of factors including how regular one's cycle length is, when one actually ovulates during the cycle, and how many periods have been logged in the app. Anxiety, stress, diet, nutrition, exercise, environment, medications, age and other factors can also affect one's cycle from month to month. Please email comments and suggestions to [email protected].

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.

SUGGESTED BUILD STACK
React Native
Expo
Supabase
react-navigation
react-native-chart
expo-calendar
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.