BoltSpec Pro vs Process Engineer Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BoltSpec Pro
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Comprehensive tool for mechanical engineers and technicians dealing with bolts, fasteners, and joint design. BoltSpec Pro provides instant access to a vast database of standard bolt specifications, torque calculations, and material properties. Key Features: - Extensive Database: Access ISO, SAE, and ASTM standards for metric and imperial fasteners. - Precision Torque Calculator: Calculate required tightening torque based on bolt grade, size, and lubrication conditions. - Material Properties: Detailed data on steel grades, tensile strengths, and yield points. - Unit Conversion: Seamlessly switch between Metric and Imperial units. - Favorites: Save frequently used fastener specs for quick access. Perfect for automotive, aerospace, construction, and manufacturing professionals.
Process Engineer Calc
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ProcessCalc is an ad-free, offline-ready utility app designed specifically for chemical engineers, extraction technicians, and laboratory researchers. Whether you are scaling up a synthesis from bench to pilot scale, optimizing solvent recovery, or sizing a chiller for your jacketed reactor, this app provides 10 specialized engineering calculators to streamline your daily workflow. Key Calculators Included: • Solvent Recovery: Estimate evaporation rates and recovery times. • Chiller Sizing: Calculate required cooling capacity (kW) and tonnage. • Biomass Capacity & Yield: Optimize loading and predict expected yields. • Scale-up Predictor: Lab to production volume and flow rate scaling. • Condenser Area: Determine required heat transfer area. • Vapor Velocity: Avoid flooding in vacuum systems with min-ID calculations. • Pump Flow Rate: Quick displacement to LPM/LPH conversions. • Scaling Risk Predictor: Assess system scaling and maintenance needs. • Vacuum Diagnostic: Calculate rate-of-rise and system leak rates. • Compliance Map: Quick reference for global hemp/CBD regulations. App Features: Zero Ads: No pop-ups, no tracking, no subscriptions. Offline First: Works instantly in the lab or extraction facility where internet might be spotty. Favorites: Star your most-used tools for one-tap access. Practical: Built around real-world formulas used in extraction and chemical processing facilities. Designed by engineers, for engineers.
Screenshots
Verdict
The clearest difference is price: Process Engineer Calc at Free against BoltSpec Pro's $1.99. On ads, in-app purchases, device support and iOS requirement 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
Process Engineer Calc is free to download; BoltSpec Pro costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | BoltSpec Pro | Process Engineer Calc |
|---|---|---|
| Price | $1.99 | Free — better |
| Update frequency | — | Every 10 days |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Qixin Net (Beijing) Technology Co., Ltd. | 冯泰 蔡 |
In-app purchases
BoltSpec Pro
No in-app purchases
Process Engineer Calc
No in-app purchases
Questions
Is BoltSpec Pro free?
Is Process Engineer Calc free?
Do BoltSpec Pro or Process Engineer Calc have ads?
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