App Overview

iFeltThat Earthquake icon

iFeltThat Earthquake

Danny Goodman · News

Did you just experience an earthquake? Find out how close and how big it was with iFeltThat, the most customizable worldwide earthquake app for the iPhone and iPod touch.

$0.99 · In-app purchases

PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.0
22 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 included16 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 iFeltThat Earthquake: map the core News 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

Incorporate a comments section for each report to enhance user interaction.

Assumption to check: Limited user engagement features like comments or discussions.

Validate with people who use this workflow before building.

Hypothesis 2

Implement push notifications for new reports to keep users informed.

Assumption to check: Lack of real-time notifications for new earthquakes.

Validate with people who use this workflow before building.

Hypothesis 3

Add a verification system for user reports to increase trust.

Assumption to check: User-generated content might lack verification.

Validate with people who use this workflow before building.

Hypothesis 4

Enable offline access to previously loaded reports.

Assumption to check: No offline functionality for viewing reports.

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

Did you just experience an earthquake? Find out how close and how big it was with iFeltThat, the most customizable worldwide earthquake app for the iPhone and iPod touch. iFeltThat retrieves information directly from official USGS sources to show you seven days of microquake activity as low as magnitude 1.0 in most U.S. regions. Earthquake lists for U.S. regions show you precisely where an event occurred (not just "Northern California," but "5 mi SE of Santa Rosa, CA"). Rotate any list view to see the region-wide map. You can also see at a glance how many citizens reported the event to the USGS "Did You Feel It?" service In addition to 20 region-specific event listings around the world (visit support page for a complete list), iFeltThat features a Nearby region, which uses your current location as a center point. Add an unlimited number of center points from your Address Book to keep an eye on seismic activity near your family and friends (or your own hometown while you travel) down to magnitude 1.0 in the U.S. (4.5 elsewhere). Or set a center point from any event location around the world to monitor earthquake swarms within 500 miles of the center point. View single-event and interactive region-wide maps in roadmap or satellite hybrid styles. All maps are pinch-zoomable and draggable, just like the Maps app. Optional one-touch zoom buttons in detail maps let you zoom in and out quickly for one-handed operation while on the go. Tap the Newer and Older buttons to navigate instantly from quake detail to quake detail without having to go back to the list. Whenever a ••USGS Shake Map•• is available for an event, a special icon appears in that event's detail view. Tap the icon to see the Shake Map within iFeltThat. In fact, all related web pages (including direct access to North American and Pacific/Indian Ocean ••Tsunami Warnings••) appear inside the app. Also from inside the app, send an email with info, links, and a screenshot of an event detail screen/map to anyone you like. Customize which four regions are ready to view at a single tap on the bottom bar. For each region list, set the minimum magnitude threshold and default map zoom level. One earthquake may have brought you to iFeltThat. You'll be so intrigued monitoring unexpected earth movements near you and around the world that you may find yourself using IFeltThat more often than you check the weather or news.

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
Firebase
Axios
React Navigation
React Native Maps
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.