Comparison

IE Calculator vs Lean Management Toolbox

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

Head to head
About

IE Calculator

This app assists industrial engineers with manufacturing planning by providing tools for production capacity, takt time, and job efficiency calculations. It supports various demand frequencies and helps determine the time needed per unit.

Highlights
  • Production Capacity Calculation
  • Takt Time Calculation
  • Actual Jobs Per Hour (JPH)
  • Hours Per Unit (HPU) Calculation
  • Support for various demand frequencies
Features
Read full description

IE Calculator is an application designed for Industrial Engineering that allows easy calculation to support the manufacturing planning. After setting the working pattern you are able to make the following calculations: - Production Capacity based on the cycle time or Jobs Per Hour(JPH). - Takt Time according to the volume demand. It can be yearly, monthly, weekly, daily or hourly demand. - Actual JPH(Jobs Per Hour) based on the start time and the end time. - HPU(Hours Per Unit) - The time required to produce one unit in the manufacturing process. I hope you enjoy the app. Gustavo Sousa, App Developer and Industrial Engineer with broad experience in the automotive industry. Email Contact: gustavoy@gmail.com

About

Lean Management Toolbox

Enhance workplace productivity and meeting efficiency with comprehensive audit tools. Identify areas for improvement, manage tasks with a Kanban board, and track progress through detailed reports. Optimize your organization's operations and reduce waste.

Highlights
  • 5S/6S Audit Checklist
  • Location and Area Management
  • Kanban Task Management
  • Audit Reports
  • Meeting Efficiency Audit
  • Meeting Cost Counter
Features
Read full description

GoLeanSigma – Lean Management Toolbox helps you to make your Lean Management journey even more efficient. Increase workplace productivity in all departments with 5S or 6S Audits. Or improve your meetings` efficiency with a meeting audit and tips for continuous improvement. Measure meeting costs and save money. Pin-point areas of your organization that needs improvement through our reports. See the progress from audit to audit with a fully-fledged cockpit and monitoring feature. Features: Lean 5S / 6S audit: - our easy-to-use and effective built-in lean 6S audit checklist is ready for your audits and inspections. - audits in admin, operations, and laboratory environments to improve workplace efficiency Location and Area Management: - divide your organization into multiple locations and areas to easily manage your tasks and audits. Tasks management: - generate tasks from your audit results and manage your task using the GoLeanSigma built-in Kanban board. Reports: - generate reports based on your audits and inspections to track your progress. Meeting Audit - improve the organization from within with increase meting efficiency - pin-point weaknesses and waste of resources in meeting structures Meeting Cost Counter - make meeting costs transparent as a baseline for improvements Terms of use: https://www.goleansigma.de/en-pages/terms-and-conditions

Screenshots

IE Calculator4 screens
Lean Management Toolbox4 screens

Verdict

The call

The clearest difference is in-app purchases: IE Calculator at none against Lean Management Toolbox's 2. IE Calculator also leads on iOS requirement (9.2 vs 13.0). Lean Management Toolbox's advantage is update cadence (every 2 months vs every 10 months). On price, rating, ratings volume and ads 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. Lean Management Toolbox sells 2 in-app purchases, starting at $5.99 per month. IE Calculator 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 IE Calculator against 5.0 for Lean Management Toolbox. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

IE Calculator ships an update every 10 months, Lean Management Toolbox every 2 months. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
IE Calculator versus Lean Management Toolbox: the parameters behind the verdict, then further details
ParameterIE CalculatorLean Management Toolbox
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews—100.0% of reviews
Number of ratings11
Update frequencyEvery 10 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS9.2 — better13.0
Further details — not scored
Size16 MB89 MB
Age rating4+17+
DeveloperGustavo SousaDenny Hartmann

Customer experience

IE Calculator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Lean Management Toolbox

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

IE Calculator

No in-app purchases

2 purchases

Lean Management Toolbox

Subscriptions2
  • Premium Access - Monthly$5.991 Month
  • Premium Access - Yearly$59.991 Year

Questions

Is IE Calculator free?
IE Calculator is free to download, with no in-app purchases.
Is Lean Management Toolbox free?
Lean Management Toolbox is free to download, with in-app purchases available.
Which has better reviews, IE Calculator or Lean Management Toolbox?
IE Calculator and Lean Management Toolbox are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do IE Calculator or Lean Management Toolbox have ads?
Neither IE Calculator nor Lean Management Toolbox shows ads.
Which is updated more often, IE Calculator or Lean Management Toolbox?
IE Calculator ships an update every 10 months, and Lean Management Toolbox every 2 months. Most recently, IE Calculator was updated on October 11, 2026 and Lean Management Toolbox on October 24, 2026.

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