App Overview

Helios Sun, Moon, Star Pre-Viz icon

Helios Sun, Moon, Star Pre-Viz

Chemical Wedding · Photo & Video

The greatest challenge faced ny photographers and cinematographers when shooting on location is predicting where the sun, moon or stars might be at any given moment, to create the best visual effect

$29.99 · In-app purchases

PRICE
$29.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
3.5
20 ratings · Top 50%

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 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 Helios Sun, Moon, Star Pre-Viz: map the core Photo & Video 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

Implement more precise geolocation services and allow users to input custom coordinates.

Assumption to check: Limited location data accuracy

Validate with people who use this workflow before building.

Hypothesis 2

Offer a free tier with basic features and affordable in-app purchases.

Assumption to check: High pricing point for features

Validate with people who use this workflow before building.

Hypothesis 3

Conduct user feedback surveys to improve UI/UX based on user needs.

Assumption to check: 3.5-star rating suggests user dissatisfaction

Validate with people who use this workflow before building.

Hypothesis 4

Integrate sharing features allowing users to share their visualizations on social media.

Assumption to check: Lack of social sharing options

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

The greatest challenge faced ny photographers and cinematographers when shooting on location is predicting where the sun, moon or stars might be at any given moment, to create the best visual effect. It's a time critical process, to be in exactly the right place, at exactly the right time. It might be predicting where the sun will set behind a wide shot of Manhattan on a particular day... It might be planning when to shoot the moon so it perfectly backlights the ocean... It might be to schedule where the Milky Way might be at its brightest at the edge of the Sahara Desert... Helios is the one tool you need to plan in any of these situations. Included in Helios are a number of tools suitable for different situations: Live View This allows you to see a camera overlay showing where the sun might appear through a window. Just frame up the shot you want to do, and observe where the sun might be at any time, on any day in the future. Street View The position of the sun on any future day is mapped over the 360º images in Google Street View. Virtual Stand-Ins of people, animals & vehicles can be placed to view how the sun or moon might light them. MapView This is graphic representation of the position and height of the sun on a top-down map. Great when planning multiple shots in a specific location throughout a shooting day. 3D Landscape View Using modeled 3D landscapes, the path and character of the sun can be visualized during the course of a day. Again, Virtual -Stand-Ins can be used to help visualize how light might make subject look different at various times during the day. 3D Building View Using the same tools as 3D Landscape view, this is for use in urban settings, where building throw shadows, depending on where the sun might be at any given time. Underwater View Helps predict the way light reacts when shooting beneath the waves. From our users.... Craig Wrobleski CSC Cinematographer FUBAR, A Man in Full, Matlock,The Umbrella Academy, Fargo, Legion, In the Tall Grass, X-Files “Both Artemis Pro and Helios Pro have become indispensable tools for me. Artemis is the most effective way to find common compositional ground with directors and camera operators, and is especially great for large format cameras like the Alexa 65 and the LF. Helios Pro is invaluable for scouting and scheduling the day to chase the light and capture it. The new features in Helios Pro mean you can be in a meeting and show everyone how the light will travel in a 3D rendering of an exterior location on the exact day we plan to shoot. I can’t imagine working without these tools.” Robert McLachlan ASC, CSC Cinematographer/Director American Gigolo, 1923, Yellowstone, Landman,Ray Donovan, The Affair, Game of Thrones, Westworld “On Game of Thrones we often scouted locations months in advance...it was critical in the down to the minute schedule planning we made for the Dance of Dragons sequence...with Helios you’re way ahead of the game in both prep and on set.” Oliver Curtis BSC Cinematographer Urban Myths, Hamlet Within, A Little Life, ,The Wedding Date, Death at a Funeral, Owning Mahowny, Vanity Fair "Helios has become an indispensable tool in my work... With the addition of AR in Helios Pro the level of preparedness for all departments is that much higher. With today’s budgets and schedules this level of information accuracy is invaluable.” Gary Varney Gaffer Eternals, The King's Man, Wicked,The Deep Blue Sea, Sexy Beast / Gaffer 2nd Unit Jack Ryan, Kick Ass, American Assassin “Helios just blows you away. To have the ability to overlay 3D models of people, buildings or vehicles to see just how the light falls on them throughout the day is incredible. I highly recommend Helios." Mairzee Almas Director Monarch: Legacy of Monsters, Jessica Jones, Y: The Last Man, The Sandman,iZombie, Guilt, 12 Monkeys, The Last Ship, Smallville "I use both Artemis and Helios when scouting and find them both invaluable tools for prep."

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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
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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.