CPF TechTools vs Easy Isometric
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CPF TechTools
This app offers essential on-the-go technical calculators for plumbing professionals. It includes tools for expansion/contraction and temperature de-rating, with more features planned for future updates.
- Expansion calculator
- Contraction calculator
- Temperature de-rating calculator
- Tools for plumbing professionals
- Future tool additions planned
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Charlotte Pipe Tech Tools App provides simple, on-the-go technical tools for the plumbing industry. Tools featured include an expansion and contraction calculator and a temperature de-rating calculator. Ideal for plumbing engineers, contractors, architects and other industry professionals. Additional tools will be added soon.
Easy Isometric
Create accurate pipe isometric drawings on your iPad or iPhone. This app automates calculations and labeling, generating bills of materials and PDF reports for efficient fabrication and purchasing.
- Automated dimension calculations
- Integrated ASME and ASTM standards
- Bill of Materials generator
- Automatic labeling of components
- PDF sharing of drawings and BOM
- Supports iPad and iPhone
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Designed for iPads, Easy Isometric finally brings pipe isometric drawings into the 21st century. Created and designed by experienced mechanical and plumbing construction professionals, Easy Isometric gives your field crews and designers the ability to quickly and accurately design fabrication level isometric designs from their iPad. Key Features: + Forty eight (48) hour full featured trial period before requiring a subscription. + Two (2) week free introductory offer included with all subscriptions after the forty eight (48) hour trial period. + Drawings can be created on both iPads and iPhones. + Integrated ASME and ASTM Standards – Our robust database allows Easy Isometric to automatically calculate center-to-center, end-to-center, and end-to-end dimensions for all pipe, fittings, flanges, and valves. This helps you reduce the need to lookup lengths and dimensions from external resources and databases. + Bill of Materials Generator – As you design your isometric drawing, Easy Isometric tracks and categorizes all materials placed on the drawing sheet. This ensures that there are no missing items when you submit your bill of material for purchase or pickup. + Automatic Labeling – When placing items within the drawing, the app will automatically label all pipes, fittings, flanges, and valves which will be reflected on the associated bill of materials. These helps prevent confusion and error when fabricating and purchasing. + Easily Share – Once you have completed your pipe isometric, you can easily share your drawing and bill of materials as a PDF from within Easy Isometric. This allows field crews to remain in the field, so that valuable time is not lost transporting designs from the field to the office. Terms & Conditions / Privacy Policy: https://www.easyisometric.com/terms-and-conditions/
Screenshots
Verdict
The clearest difference is rating: CPF TechTools at 4.5 against Easy Isometric's 2.6. CPF TechTools also leads on in-app purchases (none vs 2) and review sentiment (55% vs 34%). Easy Isometric's advantage is iOS requirement (12.0 vs 14.0). On price, ratings volume, update cadence 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. Easy Isometric sells 2 in-app purchases, starting at $0.99 per month. CPF TechTools asks for nothing beyond the download.
CPF TechTools holds the better App Store score, 4.5 against 2.6. Both are backed by a comparable volume of ratings — 22 and 57 respectively. Written reviews point the same way: 55% of CPF TechTools's written reviews are positive against 34% of Easy Isometric's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on July 7, 2026 and August 2, 2026 respectively.
| Parameter | CPF TechTools | Easy Isometric |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (22 ratings) — better | 2.6 (57 ratings) |
| Positive reviews | 54.5% of reviews — better | 34.0% of reviews |
| Number of ratings | 22 | 57 — better |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 90 MB |
| Age rating | 4+ | 4+ |
| Developer | Charlotte Pipe and Foundry Company | Construkt Technologies Inc. |
Customer experience
CPF TechTools
Easy Isometric
In-app purchases
CPF TechTools
No in-app purchases
Easy Isometric
- Monthly Subscription14 Days trial$0.991 Month
- Annual Subscription14 Days trial$9.991 Year





