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.
App Overview
BEAKER by THIX
Explore 150 chemicals in a virtual lab in the BEAKER app
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.9
284 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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included18 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
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.
JavaScript is required to complete mailbox verification.
Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for BEAKER by THIX: map the core Education 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.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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 more free experiments or content to engage users.
Assumption to check: Limited free content available
Validate with people who use this workflow before building.
Hypothesis 2
Provide better instructions and feedback during experiments.
Assumption to check: Inconsistent user feedback on experiments
Validate with people who use this workflow before building.
Hypothesis 3
Implement advanced search and filtering options.
Assumption to check: Difficulty in finding specific experiments
Validate with people who use this workflow before building.
Hypothesis 4
Introduce social features like user comments and ratings.
Assumption to check: Limited community interaction
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
Explore 150 chemicals in a virtual lab in the BEAKER app. Add in chemicals, heat it up, and shake your device to start reactions. Pour them out to clean it up. Or team up with your friends to pour chemicals between each other via AirMix™. Use virtual Match, Lid and Burner to assist your experiment. Or get the extra five tools - Blender, Cooler, Separator, Filter and Meter to do even more complex operations. Start (tap or hold on chemicals to add) - CaO + H2O - K + H2O (fire) - Na + H2O (fire) - Al + Br2 (fire) Ignite (swipe your finger and hold, like striking a match) - Ignite Mg, C, Al - Ignite H2 + O2 (explosion) Heat Up (swipe in from the lower right corner to turn on Burner) - Boil Water (H2O) - Heat Fe + HNO3 (color transformation) Shake (shake to accelerate reactions) - CuSO4 + H2O + Mg (color transformation) - AgNO3 + H2O + Cu (precipitation) - AgNO3 + H2O + NaCl (precipitation) AirMix* (nearby BEAKERs will pair automatically) - Pour Na into Cl2 (fire) - Pour CH3COOH into NaHCO3 + Blue (bubbles) - Pour NaCl + H2O into AgNO3 + H2O (precipitation) * AirMix requires an Internet connection and geolocation services. If any chemicals or reactions are missing, please contact us at [email protected]. Your suggestions are greatly valuable to us. Learn More http://thixlab.com/beaker.html Follow Us Facebook: http://facebook.com/thixlab Twitter: @thixlab
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
Supabase
Zustand
react-navigation
expo-asset
BUILD KIT DIFFICULTY
Intermediate
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.
