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.
Brian Eno and Peter Chilvers are pleased to announce Bloom: 10 Worlds – a developed, augmented and expanded new edition of 2008’s game-changing original Bloom app, which explored uncharted territory in the realm of ap...
$7.99 · 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.
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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.
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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Bloom: 10 Worlds: map the core Music workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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 soundscapes compared to other apps
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Subscription model can be confusing
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Inconsistent audio playback quality
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of social features
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.
Brian Eno and Peter Chilvers are pleased to announce Bloom: 10 Worlds – a developed, augmented and expanded new edition of 2008’s game-changing original Bloom app, which explored uncharted territory in the realm of applications and was dubbed “The First Great iPhone App” by Gizmodo. Requiring no musical or technical ability, the egalitarian and user-friendly Bloom app enabled anyone of any age to create music, simply by touching the screen. Part instrument, part composition and part artwork, Bloom’s innovative controls allowed users to create elaborate patterns and unique melodies by simply tapping the screen. A generative music player took over when Bloom was left idle, creating an infinite selection of compositions and their accompanying visualisations. Bloom: 10 Worlds is a reimagining of the original – not simply a remaster. If the original Bloom was a single, then this would be an album. The widely broadened palette of sounds and images can be experienced via 10 new ‘worlds’, each exploring a new direction for Bloom. The first world the user encounters is an echo of the original app, with circles appearing where the user taps. Each subsequent world unlocks automatically, introducing new combinations of sounds, shapes, colours and rules of behaviour. Praise for the original Bloom “The very first iPhone apps were universally dull. And then Bloom came out. It was immediately obvious that something special was happening. The app was interesting on an artistic level – one that made you reconsider the relationship between technology and music. It raised the bar for musical iPhone apps.” Gizmodo “Hypnotic and ludicrously addictive.” The Guardian “A relaxing alternative to just about anything else you can do with an iPhone.” Wired Eno began collaborating with musician / software designer Peter Chilvers on Will Wright’s computer game Spore. Their shared interest in generative music rapidly lead to the development of a prototype for Bloom in 2008. In the intervening decade, they experimented further with the field, expanding their catalogue of apps with Trope, Scape and Reflection. In that time Chilvers has also acted as an engineer and technical advisor to Eno on a number of other projects. A series of multi-speaker installations around the world laid the groundwork for 2016’s The Ship, and they premiered Bloom: Open Space, a mixed reality installation in Amsterdam in 2018. In addition to his work with Eno, Chilvers co-founded the Burning Shed label and online store, toured with Underworld’s Karl Hyde as keyboardist and musical director, and has recorded instrumental albums and collaborations with vocalist Tim Bowness.
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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.