Mathematics 3rd grade vs Plumber Prep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mathematics 3rd grade
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Mathematical exercises: addition, subtraction, multiplication and division
Plumber Prep
Calculate minimum pipe diameter and access over 500 practice questions for plumbing licensing exams. Study drainage, venting, and water supply systems offline with detailed code references. Track your progress to ensure exam readiness.
- Pipe diameter calculation
- 500+ practice questions
- IPC & UPC code coverage
- Offline study mode
- Progress tracking
- Reference tables
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Prepare for your plumbing licensing exam with practice questions, explanations, calculation tools, and progress tracking. PRACTICE AND STUDY More than 300 IPC 2021 questions, plus supplementary UPC 2021, IPC 2024, gas piping, and general content. Coverage varies by code; IPC 2021 is the primary question bank. Topics include drainage, venting, water supply, backflow prevention, and fixture units. PLUMBING TOOLS Use pipe slope, sizing, and offset calculators alongside reference material. These are study aids; verify the applicable code and local requirements before using results for an installation. OFFLINE STUDY Study the bundled content without internet and track progress by category. Purchasing and restoring access require a connection. PRO ACCESS See available plans and current prices in the app. Monthly access includes a 3-day free trial for eligible subscribers and renews automatically. Lifetime access is a one-time purchase with no free trial. Annual access is billed once per year with no free trial. Payment is charged to your Apple account. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel subscriptions in your App Store account settings. Privacy Policy: https://www.voltexam.com/privacy Terms: https://www.voltexam.com/terms Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Mathematics 3rd grade at none against Plumber Prep's 2. Mathematics 3rd grade also leads on device support (3 vs 1) and iOS requirement (8.0 vs 17.0). On price and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Plumber Prep sells 2 in-app purchases, starting at $6.99 per month. Mathematics 3rd grade asks for nothing beyond the download.
| Parameter | Mathematics 3rd grade | Plumber Prep |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Number of ratings | — | 4 — better |
| Update frequency | — | Every 4 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 8.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 28 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Sergey Novikov | Deeun Inc. |
In-app purchases
Mathematics 3rd grade
No in-app purchases
Plumber Prep
- Plumber Prep Pro Monthly$6.991 Month
- Pro — Lifetime Access$17.99
Questions
Is Mathematics 3rd grade free?
Is Plumber Prep free?
Do Mathematics 3rd grade or Plumber Prep have ads?
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