Comparison

Plumbing 3D IPC Code Learning vs Plumbing Theory Prep

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Plumbing 3D IPC Code Learning

Features
Currently charting
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Plumbing3D is a complete plumbing education app for students, apprentices, journeymen, inspectors, and engineers. Explore fully detailed 3D building models, tap any component for instant code-referenced information, and sharpen your skills through nine interactive learning modules. TWO 3D BUILDING MODELS Navigate a residential house or a 2-story commercial building in full 3D β€” switch anytime. Tap any pipe, valve, fixture, or component for its name, function, material spec, and IPC/UPC code section, from the water meter through supply risers, DWV stack, storm drainage, fire suppression, and water treatment. Toggle wall transparency, hide the roof, animate flow, explode the view by system, or overlay pipe-size labels. SEARCH ANYTHING Instantly search every component, glossary term, and quiz question from one place. LEARNING HUB β€” 9 MODULES Plumbing Quiz: Test your knowledge of code requirements, pipe sizing, and fixture unit calculations. Best score tracked. Certification Exam Mode: Timed 40-question mock exam, 70% pass threshold, countdown clock, and a missed-questions breakdown by system. Glossary: 60+ searchable terms (DWV, PRV, AAV, WSFU, DFU, backflow) with plain-English definitions and citations. Code Reference: An offline, searchable companion organizing every component's code citation and function by system. Guided Tour: A narrated walkthrough of water flow from city main to building sewer, with code references at every stage. Fault Simulator: Activate 10 real-world failures β€” water hammer, siphoned trap, cross-connection, sewage backup, and more β€” with live status gauges and an interactive response checklist. Hydraulic Calculator: Seven calculators for water demand, WSFU/DFU sizing, pipe sizing, pressure loss, recirculation, drainage load, and pump sizing β€” plus a project mode that saves named calculations and exports a PDF. Code Violations: 9 documented inspector findings with severity, code section, and remediation β€” key prep for inspections and licensing. Diagram Gallery: 45+ technical diagrams β€” P-trap assembly, DWV and riser diagrams, chiller schematics, mechanical closet cutaways, MEP sections, inspection checklists, and more. Pinch to zoom or view full screen. YOUR OWN NOTES Attach notes to any component β€” a personal study log or jobsite reference, saved automatically. BUILT FOR IPAD AND MAC Full Split View and Slide Over support on iPad, and Mac Catalyst support on Mac. WHO THIS APP IS FOR Plumbing apprentices preparing for journeyman exams Journeymen and master plumbers refreshing code knowledge Building inspectors reviewing IPC and UPC requirements Mechanical and plumbing engineers Architecture and construction management students Contractors preparing for permit submissions Standards and organizations referenced β€” including IPC, UPC, ASHRAE, ASME, NFPA, ASSE, ASTM, AMCA, and ASCE β€” are the property of their respective organizations and used solely for educational purposes. This app is not affiliated with, endorsed by, or sponsored by any of them. Code references and values are for general education only and may not reflect the current adopted edition in your jurisdiction. Always consult the applicable adopted code, a licensed engineer, and your local AHJ before making design, installation, or compliance decisions.

About

Plumbing Theory Prep

Features
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Plumbing Theory Prep is an independent, unofficial study app for UK plumbing Level 2 and Level 3 theory. Build exam confidence with 2,000+ original multiple-choice questions covering cold and hot water systems, central heating and controls, sanitation and above-ground drainage, materials and jointing, Building Regulations Parts G, H and L, energy efficiency, scientific principles, sizing and pressure calculations, and health and safety. WHY LEARNERS USE THIS APP β€’ Level 2 and Level 3 study modes β€’ 2,000+ original practice questions with detailed rationales β€’ Timed mock tests (40 questions, 45 minutes, 80% pass style) β€’ Quick practice, practice by unit/topic, and weak-area drills β€’ System-style flashcards with spaced repetition β€’ Progress dashboard: readiness %, mastery, streak, countdown to exam β€’ Review incorrect answers and bookmarks β€’ Fully offline β€” no account required, no ads, no tracking SDKs HOW IT WORKS 1. Choose Level 2 or Level 3 2. Set your exam date and daily goal 3. Practice by topic or sit a full timed mock 4. Review mistakes and track readiness until test day BUILT FOR UK PLUMBING THEORY Content is original study material inspired by publicly available Building Regulations Approved Documents (Parts G, H and L) and standard UK plumbing practice. Questions include calculation items for head, pressure and flow. SUBSCRIPTIONS & ACCESS Full access requires a purchase. Auto-renewable subscriptions (Monthly, Yearly) or a one-time Lifetime unlock. Prices are charged via your Apple Account. Manage or cancel in App Store account settings. Restore Purchases is available in the app. Privacy Policy: https://joykhansayan1.github.io/plumbing-theory-prep-uk/privacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support: https://joykhansayan1.github.io/plumbing-theory-prep-uk/support.html DISCLAIMER Unofficial study aid. Not affiliated with, endorsed by, or connected to City & Guilds, BPEC, EAL, or any awarding body. Practising here does not guarantee a pass on any official assessment. Always follow current regulations and competent-person requirements on site. Publisher: MD Shahariar Nazim Joy Copyright Β© 2026 MD Shahariar Nazim Joy

Screenshots

Plumbing 3D IPC Code Learning4 screens
Plumbing Theory Prep4 screens

Verdict

The call

The clearest difference is price: Plumbing Theory Prep at Free against Plumbing 3D IPC Code Learning's $4.99. Plumbing 3D IPC Code Learning's advantage is in-app purchases (none vs 3) and chart position (#198 vs unranked). On ads, device support and iOS requirement there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Plumbing Theory Prep is free to download; Plumbing 3D IPC Code Learning costs $4.99 up front. Plumbing Theory Prep sells 3 in-app purchases, starting at $4.99 per month. Plumbing 3D IPC Code Learning asks for nothing beyond the download.

Scorecard3 real differences Β· 4 level
Plumbing 3D IPC Code Learning versus Plumbing Theory Prep: the parameters behind the verdict, then further details
ParameterPlumbing 3D IPC Code LearningPlumbing Theory Prep
Price$4.99Free β€” better
Update frequencyEvery 4 monthsβ€”
AdsNoNo
In-app purchasesNo β€” betterYes
Best chart rank#198 β€” betterβ€”
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details β€” not scored
Size23 MB5 MB
Age rating4+4+
DeveloperYuhsiu LaiMD Shahariar Nazim Joy

In-app purchases

None

Plumbing 3D IPC Code Learning

No in-app purchases

3 purchases

Plumbing Theory Prep

Subscriptions2
  • Monthly Premium$4.991 Month
  • Yearly Premium$14.991 Year
One-time1
  • Lifetime Access$24.99

Questions

Is Plumbing 3D IPC Code Learning free?
Plumbing 3D IPC Code Learning costs $4.99, with no in-app purchases.
Is Plumbing Theory Prep free?
Plumbing Theory Prep is free to download, with in-app purchases available.
Do Plumbing 3D IPC Code Learning or Plumbing Theory Prep have ads?
Neither Plumbing 3D IPC Code Learning nor Plumbing Theory Prep shows ads.

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