App Overview

UTM Position Mailer icon

UTM Position Mailer

Viatact AB · Navigation

This is the easiest way to share your UTM coordinates!

$1.99 · In-app purchases

PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.9
36 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 included13 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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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 UTM Position Mailer: map the core Navigation 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

Offer offline maps and caching for better usability.

Assumption to check: Limited offline functionality for map access

Validate with people who use this workflow before building.

Hypothesis 2

Implement better location accuracy features.

Assumption to check: Occasional GPS inaccuracies in urban areas

Validate with people who use this workflow before building.

Hypothesis 3

Provide clear user notifications and retries for email failures.

Assumption to check: Email sending can fail without user feedback

Validate with people who use this workflow before building.

Hypothesis 4

Allow users to customize UTM settings and formats.

Assumption to check: No customization options for UTM format

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

This is the easiest way to share your UTM coordinates! - Directly read the UTM coordinates of your position. Rotate the phone for larger numbers. - Send your position as UTM coordinates via e-mail or iMessage - A map link is included with the message - The receiver can use the map link on any smartphone or computer (Google Maps™ will open in the browser) Note that some competitor products are creating a map link which will translate to a nearby street address. This is NOT done by this map. Instead, IT WILL ALWAYS SEND A MAP LINK SHOWING A POSITION WITH BEST POSSIBLE ACCURACY. Even though sending a link that translates to a street address might sometimes be convenient in cities, it can also lead to huge errors. Imagine, for instance, that you have decided a meeting place somewhere in a large park. Then it is not so smart if the app instead indicates a position on one of the streets that are surrounding the park. SO IF YOU WANT THE MAP LINK TO SHOW THE CORRECT POSITION, CHOOSE THIS APP. UTM zones can either be handled fully automatically or entered manually as a one-time setting. (The latter may be a requirement in areas where maps are produced with non-standard UTM zones in order to avoid zone boundaries crossing a country or a map sheet.) The supported datum is WGS84. Please, check that it is consistent with maps used in your region. Some other datums are very similar to WGS84 and are compatible within a few meters accuracy, e.g. NAD83 in the US and ETRS89 in Europe. Note, however, that some older datums, which may still appear on some maps, are NOT compatible, e.g. NAD27 in the US and ED50 in Europe. (This app is not possible to use in the polar regions, since "UPS" is not supported.) --- Disclaimer: All software may suffer from bugs and all electronic devices may malfunction or run out of battery. Viatact AB does not take any responsibility for injuries or losses caused directly or indirectly by the use of this app. Never go trekking in remote areas without a paper map, a traditional compass and the knowledge of how to use them! --- Google Maps is a trademark of Google Inc.

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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
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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.