Unit Converter Engineering Pro vs PipeAtlas
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Unit Converter Engineering Pro
This app provides precise unit conversions for engineers, scientists, and students. It supports over 100 units across 35 categories, including scientific notation and 9-digit decimal precision. The tool works offline and adheres to SI, NIST, and ISO standards.
- Over 100 units in 35+ categories
- Scientific notation support
- 9-digit decimal precision
- SI, NIST, ISO compliant
- Offline functionality
- Specialized units included
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Unit Converter Engineering Pro – The ultimate tool for engineers, scientists, and students who need precise and fast unit conversions. Easily convert between over 100 units across more than 35 categories commonly used in engineering, physics, chemistry, and mathematics. Perfect for professionals, researchers, and students who want a reliable, professional-grade converter at their fingertips. Included categories: • Acceleration • Angle • Area • Specific Heat • Electric Charge • Heat Transfer Coefficient • Length • Concentration • Thermal Conductivity • Physical Constants • Density • Diffusivity • Energy • Heat Flux • Force • Illuminance • Luminance • Mass • Moment / Torque • Power • ppm / ppb / ppt / % • SI Prefix • Pressure • Radiation – Activity • Radiation – Dose • Radiation – Exposure • Radiation – Equivalent Dose • Time • Volume • Velocity / Speed • Viscosity • Volume Flow Rate • Voltage / Electric Potential • Frequency • Temperature Key Features: • Supports scientific notation for extreme precision • Fully compliant with SI, NIST, and ISO standards • 9-digit decimal precision for engineering-grade accuracy • Fast and intuitive interface • Works offline – no internet required • Includes rare and specialized units often missing from other converters • Made by engineers, for engineers Simplify your work, save time, and ensure accuracy with Unit Converter Engineering Pro - your professional unit conversion companion. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
PipeAtlas
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PipeAtlas is a professional piping engineering reference app for piping engineers, mechanical engineers, designers, fabricators, and inspectors. Access essential piping dimensions, weights, and engineering data anytime — in the office, workshop, or field. PipeAtlas provides a comprehensive database covering flanges, fittings, valves, pipes, gaskets, branch connections, fasteners, and piping design references based on international standards. FEATURES • Pipe dimensions and weights • Flange dimensions and weights • Pipe fitting dimensions and weights • Valve dimensions and face-to-face data • Gasket and fastener reference data • Piping component lookup • Engineering design references DATA COVERAGE PipeAtlas covers commonly used piping components and standards: 1. Flanges 1.1 ASME B16.5 Flanges • Weld Neck Flange • Slip-On Flange • Blind Flange • Threaded Flange • Socket Weld Flange • Lap Joint Flange 1.2 ASME B16.47 Flanges • Series A Flanges • Series B Flanges • Weld Neck Flange • Blind Flange 1.3 API 6A Flanges • Type 6B • Type 6BX 1.4 Other Flange Standards • ASME B16.36 Orifice Flanges • ASME Compact Flanges • EN 1092-1 Flanges • BS 10 Flanges • Hub and Clamp Connections 2. Pipe Fittings 2.1 ASME B16.9 Butt Weld Fittings • Elbows • Tees • Reducers • Caps 2.2 ASME B16.11 Forged Fittings • Threaded Fittings • Socket Weld Fittings 3. Valves ASME B16.10 Valve Dimensions Supported valve types: • Gate Valve • Globe Valve • Ball Valve • Check Valve • Butterfly Valve • Control Valve Including: • Flanged Valves • Butt Weld Valves • Threaded Valves • Socket Weld Valves 4. Line Blinds & Spacers ASME B16.48 Line Blanks • Spectacle Blind • Line Spade • Spacer • RTJ Ring Types 5. Welded Branch Connections Supported components: • Weldolet • Sockolet • Threadolet • Elbolet • Latrolet • Nipoflange • Flanged Branch Connections 6. Gaskets Supported gasket data: • Flat Ring Gaskets • Spiral Wound Gaskets • RTJ Gaskets (ASME B16.21) • Type R / RX / BX Rings 7. Pipes Pipe dimensions based on: • ASME B36.10M • ASME B36.19M Including: • Pipe by Schedule • Pipe by Wall Thickness 8. Fasteners • ISO Nuts • UNC Nuts 9. Design References Engineering references include: • ASME Composite Dimensions • Pipe Flexibility Reference • Pipe Leg Calculation • Pipe Loop Calculation • Safe Pipe Spans • Safe Pipe Spacing SUPPORTED STANDARDS • ASME B16.5 • ASME B16.9 • ASME B16.10 • ASME B16.11 • ASME B16.36 • ASME B16.47 • ASME B16.48 • ASME B16.21 • ASME B36.10M • ASME B36.19M • API 6A • EN 1092-1 • BS 10 Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is device support: Unit Converter Engineering Pro at 3 against PipeAtlas's 1. Unit Converter Engineering Pro also leads on iOS requirement (13.0 vs 18.6). On price, 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. Unit Converter Engineering Pro sells 2 in-app purchases, starting at $5.99 per 7 days and PipeAtlas sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | Unit Converter Engineering Pro | PipeAtlas |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Weekly | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 77 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Kaiguri Tech | Shenzhen Seize Times E-Commerce Co., Ltd. |
In-app purchases
Unit Converter Engineering Pro
- 3-Day Trial3 Days trial$5.997 Days
- Yearly Plan$19.991 Year
PipeAtlas
- PipeAtlas Pro One Month$1.991 Month
- PipeAtlas Pro One Year$19.991 Year
- PipeAtlas Pro Lifetime$29.99
Questions
Is Unit Converter Engineering Pro free?
Is PipeAtlas free?
Do Unit Converter Engineering Pro or PipeAtlas have ads?
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