App Overview

The Building Blocks of Rock icon

The Building Blocks of Rock

GuitarViz LLC · Music

Are you feeling stuck, not getting better at guitar? Now you can find new ideas quickly, in a visual guide to hundreds of the most-used riff and lick shapes in rock guitar.

$9.99 · In-app purchases

PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.7
14 ratings · Top 15%

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 included18 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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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.

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Rork plan preview for The Building Blocks of Rock: 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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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

Include more interactive practice tools and quizzes.

Assumption to check: Limited interactive features compared to other learning apps

Validate with people who use this workflow before building.

Hypothesis 2

Implement a guided onboarding tour.

Assumption to check: User onboarding may be confusing for new users

Validate with people who use this workflow before building.

Hypothesis 3

Add forums or social sharing options.

Assumption to check: No community features for user engagement

Validate with people who use this workflow before building.

Hypothesis 4

Offer a free tier with limited access to attract more users.

Assumption to check: Subscription cost may deter users

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

Are you feeling stuck, not getting better at guitar? Now you can find new ideas quickly, in a visual guide to hundreds of the most-used riff and lick shapes in rock guitar. RIFFS AND LICKS Riffs and licks are key to building "vocabulary" on guitar -- things you can do besides just strumming chords or picking out scales. The most common riffs and licks are found in more than one song, just like chords and scales. But unlike chords and scales, they don't have names -- so a lot of guitarists never learn very many of them. The Building Blocks of Rock for guitar shows you hundreds of the most common riff, lick, chord and scale shapes. Over half are all new *riff* (rhythm guitar) and *lick* (lead guitar) shapes -- like chord and scale shapes, but with a few added symbols for things like barres and bent strings. Each shape has: * a visual diagram * a detailed description * a pro-quality sound example * a list of famous song examples * the music theory underneath it HOW IT WORKS Looking at a shape, you pick up your guitar and place your fingers to match it; using the root (red circle) as a reference point. For moveable shapes, the handy fretboard map under the shape shows you where the root lives, for any given note name, or song example. Listening to the sound file, you try to copy what you hear there, or in the song references. Even if you don't get it right away, moving your hands in different ways, to different places on the neck, sparks new connections and muscle memory. Scrolling through hundreds of shapes, you start to see patterns emerge -- ideal for visual learners and visualization. String together some of these "building block" shapes to create your own riffs or solos. Tap any shape to toggle advanced mode (pitch display) in color, where you can see how far to bend strings, how chords are built, and why shapes sound the way they do. This is relative pitch; the secret to playing by ear, the way most guitarists do. FEATURES * over 500 shapes; a visual library of guitar patterns and diagrams * view by shape "type" (riffs, licks, chords, scales) * view by shape "family" (CAGED) * view open vs. moveable shapes * music theory under each shape * hundreds of famous song examples * some shapes have video links * left-handed mode * works offline (after initial download) THINGS TO KNOW * scale shapes don't include song examples or descriptions * currently just one sound example per shape * app is vertical; cannot be rotated, or zoomed in * video links are to YouTube, where you may see ads There's no tab included. The shapes won't tell you how many times to play each note, or the order to play them in. They're designed to be open-ended: what you do with them is up to you! WHO IS IT FOR? * you're learned some chords, maybe a few scales; and you're wondering, "now what?" * you've hit that "intermediate plateau"; trying to improve, but not getting better * you're stuck, not making progress; like something's missing If you're just starting off, you should learn the basics first. But once you're ready to start moving up the neck (or even stay down by the nut, but learn some new tricks), this app is for you. And players of all levels will enjoy just scrolling the shapes and skimming the descriptions and "fun facts" (including some song secrets that most tabs and videos get wrong). NO ADS OR SUBSCRIPTIONS Buy it once and you're done. There's no ads to slow you down, or subscriptions to burn a hole in your wallet. You'll be set for the future too, as new shapes, sounds, and song examples are added on an ongoing basis, without you needing to update the app. This is an app that will grow along with you, on your guitar journey. ABOUT GUITARVIZ LLC Kevin McFarland (founder) has over 50 year's experience. He built a free web app that shows some of these "building block" shapes (without sound). You can see it at www.guitarviz.com. Learn more about these shapes by searching the web for "the building blocks of rock for guitar".

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Build scope

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Define the first version

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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
axios
react-navigation
expo-video
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.