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.
Whether you are a professional Paranormal Investigator, a hobbyist or just want to have some fun, this app works like a "Spirit Box" reading data from your sensors and turning it into spoken words.
$2.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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.
JavaScript is required to complete mailbox verification.
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Ghostalker: map the core Lifestyle workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Affiliate link: CloneChart may earn a commission at no extra cost
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
Assumption to check: Limited user engagement due to lack of community features.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Inconsistent data on haunted locations.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Subscription model may deter some users.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Low ratings due to bugs and crashes.
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Whether you are a professional Paranormal Investigator, a hobbyist or just want to have some fun, this app works like a "Spirit Box" reading data from your sensors and turning it into spoken words. With a database of over a thousand commonly used words, Ghostalker will read changes in all of the sensors it can find in your device. This includes sensors for the tiniest amount of vibration, rotation, GPS, gyroscope, light, magnetic fields, proximity etc. and convert them to words which it will display and speak. This app uses the actual raw data from the sensors to determine what to say, rather than picking words at random like some other apps. LOGGING: This is the full version of the app so it logs the words spoken for you to view, save, email, delete etc. at a later time. There is also a built-in log viewer. The date and time is logged, along with the combined change in sensor readings (so you can see how big a change was picked up) and the word. The log files are in CSV format so you can import them into your favourite spreadsheet (e.g. MS Excel or Google Sheets). DICTIONARY: You can also manage your own custom dictionary of words so you can make your own special list of replies. You can flick between the in-built dictionary, your own custom dictionary or both combined (from v0.5) at any time. This app is not designed to form complete sentences so it is up to you to interpret what it says in your own way. Top end phones and tablets tend to have more sensors than low end ones but the app is designed to work with whatever it can find. The sensitivity of sensors will also vary between devices. TIP 1: Using the custom dictionary you can have it reply with special limited words, for example 'yes', 'no' and 'maybe' when you ask it questions. Or add a series of digits and get it to pick your lottery numbers. Or add the letters of the alphabet so it can work like a Ouija board. TIP 2: Paranormal investigators believe that leaving such devices running for as long as possible will allow "spirits" to learn what energy is required to trigger certain words. TIP 3: If it starts to trigger words constantly you may be getting interference from something close by. Try moving the device somewhere else or tap the 'Calibrate' button to get it to tune out background variance (although you will lose some sensitivity). TIP 4: NEW - Keep lists of custom words in text files. Each word should be on its own line or separated by a space. Select all of the words and copy them to the clipboard. You can then import them into Ghostalker by pasting them from the clipboard. You can also copy word lists from the web, an email, or anywhere you can copy text. If the app does not do what you were expecting, or there is an issue with it running on your device, please contact us for help. There are no adverts in this software. If you would like to try the free version first (without the logging or custom dictionary functionality), it is listed under "Ghostalker Lite".
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.