CPF TechTools vs U
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.
U
Connects plumbing service providers with urgent local service requests in real-time. Streamlines the process of finding and accepting jobs efficiently.
- Real-time service requests
- Nearby job alerts
- Provider-focused
- Efficient job matching
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An easy way for providers to find nearby plumbing service request in real-time.
Screenshots
Verdict
The clearest difference is review sentiment: U at 100% against CPF TechTools's 55%. U also leads on rating (5.0 vs 4.5) and iOS requirement (12.4 vs 14.0). CPF TechTools's advantage is ratings volume (22 vs 1). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
U holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: CPF TechTools has 22 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 55% of CPF TechTools's written reviews are positive against 100% of U's.
CPF TechTools ships an update every 2 months, U every 5 weeks. The most recent releases landed on July 7, 2026 and June 4, 2026 respectively.
| Parameter | CPF TechTools | U |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (22 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 54.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 22 — better | 1 |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 14.0 | 12.4 — better |
| Further details — not scored | ||
| Size | 8 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Charlotte Pipe and Foundry Company | Uraniumsoft |
Customer experience
CPF TechTools
U
In-app purchases
CPF TechTools
No in-app purchases
U
No in-app purchases
