Compressor HP vs CalcEngineer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Compressor HP
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Calculate hermetic compressor size (Horse power or watts). Just enter electric data and click or tap calculate button to see the compressor power.
CalcEngineer
This app provides professional engineering calculations for compressed air systems. It helps engineers and technicians determine CFM requirements, size compressors and tanks, and analyze pressure drops for optimized pneumatic systems.
- CFM Calculator
- Compressor & Tank Sizing
- Pressure Drop Analysis
- Flow Velocity & Pipe Sizing
- Multiple CFM Entries
- General Engineering Calculator Suite
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CalcEngineer - Professional Engineering Calculators The ultimate compressed air system calculator for engineers, technicians, and professionals. Calculate CFM requirements, size compressors and tanks, analyze pressure drops, and optimize your pneumatic systems with engineering-grade precision. KEY FEATURES: • CFM Calculator - Air actuator airflow calculations with real-time results • Compressor Sizing - Size compressors for your specific air demands • Tank Sizing - Calculate air receiver tank requirements and capacity • Pressure Drop Analysis - Determine pressure loss in pipes and fittings • Flow Velocity Calculator - Calculate fluid velocity for optimal system design • Pipe Sizing - Optimize pipe diameter selection for efficiency • Multiple CFM Entries - Add multiple air demands for complex systems • Engineering Calculator Suite - Additional tools for mechanical, electrical, chemical, and thermal engineering PROFESSIONAL TOOLS: • Real-time calculations using industry-standard formulas • Pre-filled values that transfer between calculators • Imperial and metric unit support with automatic conversion • Engineering-grade accuracy for professional applications • Clean, intuitive interface designed for daily use PERFECT FOR: • Industrial engineers and maintenance teams • System designers and consultants • Engineering students and educators • Manufacturing and facility managers • HVAC professionals and technicians Built by Justin Bush | JB CRE8IV - Professional engineering calculation solutions.
Screenshots
Verdict
The clearest difference is in-app purchases: CalcEngineer at none against Compressor HP's 3. CalcEngineer also leads on update cadence (every 2 days vs every 4 months). Compressor HP's advantage is iOS requirement (14.4 vs 17). 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. Compressor HP sells 3 one-off in-app purchases. CalcEngineer asks for nothing beyond the download.
Compressor HP ships an update every 4 months, CalcEngineer every 2 days. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.
| Parameter | Compressor HP | CalcEngineer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 4 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.4 — better | 17 |
| Further details — not scored | ||
| Size | 3 MB | 10 MB |
| Age rating | 4+ | 9+ |
| Developer | Melchisedec Martinez Rodriguez | Justin Bush |
In-app purchases
Compressor HP
- Unlock capacitor size$0.99
- Unlock compressors type$2.99
- Unlock all refrigerants$2.99
CalcEngineer
No in-app purchases
Questions
Is Compressor HP free?
Is CalcEngineer free?
Do Compressor HP or CalcEngineer have ads?
Which is updated more often, Compressor HP or CalcEngineer?
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