App Overview

Signal Server icon

Signal Server

Ryan Zaucha · Travel

Stop waving at your waiter

$0.99 · In-app purchases

PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
5.0
3 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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A product spec, screen plans, and build steps for your coding agent.

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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 Signal Server: map the core Travel 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

Integrate a broader travel API for more choices.

Assumption to check: Limited destination search options

Validate with people who use this workflow before building.

Hypothesis 2

Implement a review system to help users make informed decisions.

Assumption to check: Lack of user reviews for trips

Validate with people who use this workflow before building.

Hypothesis 3

Optimize image loading and data fetching methods.

Assumption to check: Slow loading times on some screens

Validate with people who use this workflow before building.

Hypothesis 4

Add in-app messaging for better communication between users.

Assumption to check: No in-app messaging for trip coordination

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

Stop waving at your waiter. Stop craning your neck. Stop the awkward moment where you're not sure if they saw you. Just hold up your phone — full-screen, impossible to ignore — and let Signal Server do the talking. One swipe. One tap. Done. WHAT IT DOES Signal Server turns your iPhone into a large-format signal card. Swipe to the message you need — "Check Please," "Water Please," "Ready to Order," "Allergy Alert" — and place it face-up on the table. The screen maxes to full brightness automatically. The card is bold, high-contrast, and visible from across a busy room. Your waiter sees it. No shouting required. 12 READY-TO-USE SIGNALS • Check Please • Water Please • Ready to Order • Help Please • Napkin Please • Menu Please • Restroom • To-Go Box Please • More Bread • Allergy Alert • Thank You • Be Right Back BUILT FOR EVERYONE AT THE TABLE Travelers: You're in a restaurant in Tokyo, Lisbon, or Mexico City. The language barrier is real. Signal Server speaks 55 languages — English, Spanish, French, Japanese, Arabic, Thai, Korean, Portuguese, and 47 more — so your signals are always in the local language. Quiet diners: Not everyone wants to flag down a server with a wave and shout. Signal Server lets you communicate without raising your voice or your hand. People with accessibility needs: If speaking loudly in a restaurant is difficult — due to hearing loss, vocal conditions, anxiety, or any other reason — Signal Server is a practical, dignified solution that works without any setup. Anyone tired of waiting: Signal Server closes the gap from minutes to seconds. BUILD YOUR OWN SIGNALS Need something not on the list? Create unlimited custom signals with your own text, icon, and color. Every signal lives in a Quick Pick grid for instant one-tap access. NO ACCOUNTS. NO SETUP. NO SUBSCRIPTION. Open the app. Swipe to your signal. That's it. No login, no onboarding, no recurring charges. One purchase covers everything, forever. PREMIUM DETAILS THAT MATTER • Auto-brightness: Screen goes to maximum the moment you select a signal • Screen stays on: The display never sleeps while a signal is showing • Quick Pick grid: Jump to any signal in a single tap • Haptic feedback: Each selection confirms with a satisfying physical response • Sleek dark design: Looks intentional on any table setting Signal Server. Because you shouldn't have to work this hard to get a glass of water.

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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.

SUGGESTED BUILD STACK
React Native
Expo
Zustand
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Supabase
react-native-gesture-handler
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.