App Overview

UDBapp: Powered by Arc icon

UDBapp: Powered by Arc

Ultimate Drill Book · Education

NEW

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
3.1
7 ratings · Below Average

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.

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/
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.

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.

JavaScript is required to complete mailbox verification.

Free quick prompt For a smaller starting point

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 UDBapp: Powered by Arc: 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 copies the full prompt to your clipboard first, then opens Rork in a new tab.

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

Introduce user-generated drills and community sharing.

Assumption to check: Limited drill variety can lead to user fatigue.

Validate with people who use this workflow before building.

Hypothesis 2

Incorporate gamification elements like streaks and rewards.

Assumption to check: User engagement drops after initial use.

Validate with people who use this workflow before building.

Hypothesis 3

Implement a unified progress dashboard and analytics.

Assumption to check: Difficulties in tracking progress across multiple drills.

Validate with people who use this workflow before building.

Hypothesis 4

Offer a more enticing free trial with exclusive content.

Assumption to check: High churn rate due to paywall after first drill.

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

NEW • Jump forward or backward, pause or reset your drill with intuitive Control Wheel • See drill in light and dark mode, set automatically from your preferences. • Annotate directly on your drill, place links and organize text notes with Field Notes and Design Notes • Access a full suite of admin-granted features via Smart Access. • NEW: Update licenses or access in UDB, and changes are reflected across all Arc products • Customize your experience, without leaving the drill, with quick settings and widgets • Tap any performer to view photo, coordinate, page information and attendance status via Geo. Features for Members • Watch the drill animation while listening to the music from any perspective (performer or director) • View your individual coordinate sheet for sets in a song or counts in a set • Follow your drill count by count with live updating coordinates • See curved and straight-line path information for previous and next sets Features for Admins and Staff • Change field perspective (performer/director) • Easily add/delete/edit drill files in your ensemble's account directly from the app • Learn and clean drill just seconds after it has been exported from Pyware by the designer • One tap access to Beam for sheet music, and Geo for attendance Differentiators • Unlimited drill uploads from Pyware, the best-in-class drill design software • Phone layout designed for one handed use • Easily find your halfway points and yard line crossing counts • Easily switch between custom views Tap ID Tap ID allows directors to see the performer labels that members have selected. Simply tap on a performer's dot while viewing the drill to see their name, photo, page information and attendance status. Multiple students can select a single performer label, so directors can easily see and manage alternates, shadows, and primary performers. Geo Calendar & Attendance See full rehearsal and performance schedule, check-in to events with multiple locations, and track attendance throughout the season. Use Live Attendance to get a real-time view of who is at rehearsal and who is not. Offline Mode Restrict access to Ultimate Drill Book if selected users are connected to the internet. If not activated, all users will be able to access Ultimate Drill Book even if connected to a WiFi or cellular connection.

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
Zustand
Axios
React Navigation
TypeScript
BUILD KIT DIFFICULTY
Advanced

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.