Comparison

SIGMASMITH vs CalcEngineer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SIGMASMITH

This toolkit helps businesses optimize operations by calculating labor costs, tracking error frequency with Pareto charts, and conducting time studies with line balance charts. It provides data-driven insights to enhance productivity and manage resources effectively.

Highlights
  • Efficiency Calculator for labor hours and cost per unit
  • Error Frequency Tracker with Pareto charts
  • Time Study tool with line balance charts
  • Takt Time alignment for demand matching
  • Data-driven decision making for operations
Features
Read full description

Introducing the latest innovation from Sigmasmith: Efficiency and Productivity Toolkit. Designed for businesses seeking to elevate their operational efficiency and optimize labor management, our app is your gateway to productivity insights. Maximize Labor Hours with Precision: Our Efficiency Calculator is engineered to deliver precise calculations of your labor hours per unit and labor cost per unit, enabling you to make informed decisions that boost productivity while managing costs effectively. Discover the power of data-driven decision-making and elevate your operational efficiency to new heights. Prioritize with Pareto: Navigate the complexities of error management with our Error Frequency Tracker. By identifying and prioritizing errors based on Pareto-presented data, our tool empowers you to focus on the most impactful issues. Reduce downtime, minimize errors, and streamline your operations with targeted solutions that make a difference. Optimize with Time Studies: Elevate your process optimization with our Time Study Tool. Capture comprehensive time studies effortlessly and review the data through intuitive Line Balance Charts. Align your operations with Takt Time (customer demand) and identify the optimal focus areas to enhance throughput, meet demand, and exceed expectations. Whether you're looking to refine your labor allocation, reduce operational errors, or streamline your production processes, Sigmasmith's app is your all-in-one solution. Embrace the future of operational excellence and join the ranks of businesses transforming their productivity landscapes. Efficiency Calculator that provides Labor Hours Per Unit and Labor Cost Per Unit. Error Frequency Tracker that presents recorded error data in a pareto chart for easy prioritization of error reduction. Time Study to allow multiple time study entries and presented through a line balance chart with takt time. Download now and take the first step towards operational perfection with Sigmasmith. Your journey to enhanced efficiency and productivity begins here.

About

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.

Highlights
  • CFM Calculator
  • Compressor & Tank Sizing
  • Pressure Drop Analysis
  • Flow Velocity & Pipe Sizing
  • Multiple CFM Entries
  • General Engineering Calculator Suite
Features
Read full description

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

SIGMASMITH4 screens
CalcEngineer4 screens

Verdict

The call

The clearest difference is in-app purchases: CalcEngineer at none against SIGMASMITH's 3. CalcEngineer also leads on update cadence (every 2 days vs every 3 weeks). SIGMASMITH's advantage is iOS requirement (15.6 vs 17). On price, rating, review sentiment and ratings volume 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SIGMASMITH sells 3 one-off in-app purchases. CalcEngineer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for SIGMASMITH against 5.0 for CalcEngineer. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

SIGMASMITH ships an update every 3 weeks, CalcEngineer every 2 days. The most recent releases landed on June 24, 2026 and September 12, 2026 respectively.

Scorecard3 real differences · 7 level
SIGMASMITH versus CalcEngineer: the parameters behind the verdict, then further details
ParameterSIGMASMITHCalcEngineer
PriceFreeFree
Rating5.0 (2 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings22
Update frequencyEvery 3 weeksEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.6 — better17
Further details — not scored
Size64 MB10 MB
Age rating4+9+
DeveloperRichard ValoisJustin Bush

Customer experience

SIGMASMITH

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

CalcEngineer

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

SIGMASMITH

One-time3
  • Get Premium For Life$0.99
  • Get Professional For Month$4.99
  • Get Yearly Subscription$44.99
None

CalcEngineer

No in-app purchases

Questions

Is SIGMASMITH free?
SIGMASMITH is free to download, with in-app purchases available.
Is CalcEngineer free?
CalcEngineer is free to download, with no in-app purchases.
Which has better reviews, SIGMASMITH or CalcEngineer?
SIGMASMITH and CalcEngineer are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.
Do SIGMASMITH or CalcEngineer have ads?
Neither SIGMASMITH nor CalcEngineer shows ads.
Which is updated more often, SIGMASMITH or CalcEngineer?
SIGMASMITH ships an update every 3 weeks, and CalcEngineer every 2 days. Most recently, SIGMASMITH was updated on June 24, 2026 and CalcEngineer on September 12, 2026.

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