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
CDL Test Prep 2026
Pass your 2026 CDL exam on the first try — trusted by 43,000+ drivers with a 4.9-star average rating.
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.9
43,977 ratings · Top 5%
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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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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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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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.
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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 CDL Test Prep 2026: map the core Education 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
Incorporate more diverse question types and explanations.
Assumption to check: Limited question variety and depth.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a cleaner layout with better spacing.
Assumption to check: User interface can feel cluttered.
Validate with people who use this workflow before building.
Hypothesis 3
Add a feature for tailored study schedules based on user performance.
Assumption to check: Lack of personalized study plans.
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the purchase process and clearly outline benefits.
Assumption to check: In-app purchases can be confusing.
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
Pass your 2026 CDL exam on the first try — trusted by 43,000+ drivers with a 4.9-star average rating. CDL Test Prep 2026 is the highest-reviewed CDL study app on the App Store, helping thousands of professional drivers ace their Commercial Driver's License exam every month. Whether you need your CDL permit, Class A, Class B, or any endorsement, we have you covered with realistic practice tests and detailed explanations. WHY DRIVERS CHOOSE CDL TEST PREP 2026 • Proven Results: Thousands of drivers pass their CDL test on the first attempt • 43,000+ Reviews at 4.9 Stars: The most-reviewed dedicated CDL prep app • All 50 States: Questions tailored to your local DMV — Texas, California, Florida, New York, Ohio, Illinois, and every other state • 100% Free to Start: Practice the core question bank at no cost • Available in English and Spanish COMPLETE ENDORSEMENT COVERAGE Prepare for every CDL endorsement test in one app: • General Knowledge • Air Brakes • HazMat (Hazardous Materials) • Passenger Vehicle • School Bus • Combination Vehicle • Tanker • Doubles / Triples We also include ELDT theory coverage aligned with FMCSA Entry-Level Driver Training requirements. SMART STUDY FEATURES • Realistic Exam Simulator: Timed practice tests that mirror the actual DMV testing experience • Instant Feedback: See the correct answer and a detailed explanation after every question • Adaptive Learning: The app tracks your weak topics and rebuilds custom study sessions • Progress Tracking: Monitor your scores, exam history, and improvement trends • Quick-Review Flashcards: Rapid review for last-minute study sessions • Offline Access: Study anywhere, no internet connection required • Question Handbook Mode: Browse every question + explanation organized by topic HOW IT WORKS 1. Choose your state and CDL endorsement type 2. Study with leveled practice questions and instant explanations 3. Review wrong answers with step-by-step reasoning 4. Take realistic timed exams when you feel ready 5. Pass your CDL test with confidence BUILT FOR BUSY DRIVERS Your time is valuable. CDL Test Prep 2026 is designed for efficient studying: • Short study sessions that fit into a 15-minute break • Clean, distraction-free interface • Small app size — downloads in seconds, even on cellular • Works fully offline during downtime WHAT DRIVERS ARE SAYING "This is the only app that actually has the questions from the tests. Amazing!" — 5-star review "I used this app only — no handbook — and passed all three tests back to back!" — 5-star review "Helped me pass my HazMat endorsement renewal on the first try!" — 5-star review ALWAYS UP TO DATE Our question bank is regularly updated to align with the 2026 CDL handbook and DMV requirements for all 50 states. The 2026 edition includes refreshed questions, updated federal regulations, and the latest ELDT theory content. ABOUT US CDL Test Prep 2026 is developed by a team passionate about helping aspiring and current professional drivers succeed. We are not affiliated with any government agency or the DMV. Questions or feedback? We love hearing from drivers. Email: [email protected] Download CDL Test Prep 2026 today and start your journey to CDL success.
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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
React Native
Expo
Zustand
Axios
React Navigation
BUILD KIT DIFFICULTY
Starter
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.
