Daniel® Measurement App vs Quel
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Daniel® Measurement App
Streamline your calculations with this tool, leveraging expert knowledge for precise application sizing. Access an extensive product database and save valuable time and resources. Export your results easily via email.
- Accurate application sizing
- Extensive product database
- Intuitive user interface
- Save time and resources
- Request expert assistance
- Export calculations to CSV/PDF
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Optimize your calculations with our app. Accurately calculate the ideal size for your applications, backed by Daniel® Measurement and Control expertise. - Fast and precise calculations - Extensive Daniel product database - Intuitive interface - Save time and resources - Send Request to Experts - Save yours meter calculation - Export to CSV and PDF via email - Multiple units of calculation
Quel
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Quel is your all-in-one engineering toolkit for instrumentation and controls. Designed for process engineers, control engineers, and instrumentation specialists, Quel brings powerful sizing and calculation tools into one streamlined app. Whether you're working on valves, orifice plates, or temperature sensors, Quel helps you size, calculate, and verify with speed and accuracy. KEY FEATURES • Control Valve Sizing – Quickly determine Cv, flow conditions, and check for subcritical or critical operation. • Valve Performance Calculator – Evaluate installed gain, rangeability, and operating point across the full stroke range. • Orifice Plate Sizing – Built-in ISO 5167 calculations for DP, Beta ratio, and flowrate in engineering units. • Temperature Sensors – RTD and thermocouple resistance and millivolt reference tables for common sensor types. • Unit Conversions – Instant conversions across pressure, temperature, flow, and volume to simplify day-to-day calculations. • Save & Export – Save calculation results to history, export as PDF or text for documentation and field reports. • Engineering References – Quick guides and formulas used in the field for sizing and troubleshooting. WHY QUEL? • Fast & Reliable – Save time in the field or office with ready-to-use sizing tools. • Accurate – Built around standard engineering methods (ISA, IEC, API, ISO, ASME). • Practical – Designed by engineers, for engineers, with workflows that match real projects. • Portable – A professional-grade toolkit in your pocket, whether you're commissioning, troubleshooting, or reviewing designs. With Quel, you work smarter and more confidently on process control projects, knowing your sizing and calculations are consistent with industry standards.
Screenshots
Verdict
The clearest difference is in-app purchases: Daniel® Measurement App at none against Quel's 3. Daniel® Measurement App also leads on iOS requirement (12.0 vs 15.6). Quel's advantage is update cadence (every 5 days vs every 2 weeks). On price, ads and device support 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. Quel sells 3 in-app purchases, starting at $9.99 per month. Daniel® Measurement App asks for nothing beyond the download.
Daniel® Measurement App ships an update every 2 weeks, Quel every 5 days. The most recent releases landed on October 18, 2026 and October 11, 2026 respectively.
| Parameter | Daniel® Measurement App | Quel |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 37 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel® Measurement & Control | Guillermo Alvarado |
In-app purchases
Daniel® Measurement App
No in-app purchases
Quel
- Quel Monthly Plan$9.991 Month
- Quel Yearly Plan$69.991 Year
- Full Access$4.99









