# Lean Management Toolbox vs SIGMASMITH

The clearest difference is monetization model: SIGMASMITH at free against Lean Management Toolbox's free with in-app purchases. SIGMASMITH also leads on update cadence (every 3 weeks vs every 2 months). Lean Management Toolbox's advantage is iOS requirement (13.0 vs 15.6). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Lean Management Toolbox sells 2 in-app purchases, starting at $5.99 per month and SIGMASMITH sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Lean Management Toolbox against 5.0 for SIGMASMITH. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Lean Management Toolbox ships an update every 2 months, SIGMASMITH every 3 weeks. The most recent releases landed on July 22, 2026 and June 24, 2026 respectively.

## The numbers

| Metric | Lean Management Toolbox | SIGMASMITH |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/lean-management-toolbox/id1635431415/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/sigmasmith/id6475358569/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 89 MB | 64 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Denny Hartmann](https://appshunter.io/developer/1635431627) | [Richard Valois](https://appshunter.io/developer/1724050357) |

## What reviewers say

### Lean Management Toolbox

[App page](https://appshunter.io/ios/app/lean-management-toolbox/id1635431415)

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:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access - Monthly | $5.99 | per month |
| Premium Access - Yearly | $59.99 | per year |


### SIGMASMITH

[App page](https://appshunter.io/ios/app/sigmasmith/id6475358569)

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:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get Premium For Life | $0.99 | one-time |
| Get Professional For Month | $4.99 | one-time |
| Get Yearly Subscription | $44.99 | one-time |


## Frequently asked questions

### Is Lean Management Toolbox free?

Lean Management Toolbox is free to download, with in-app purchases available.

### Is SIGMASMITH free?

SIGMASMITH is free to download, with in-app purchases available.

### Which has better reviews, Lean Management Toolbox or SIGMASMITH?

Lean Management Toolbox and SIGMASMITH are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Lean Management Toolbox or SIGMASMITH have ads?

Neither Lean Management Toolbox nor SIGMASMITH shows ads.

### Which is updated more often, Lean Management Toolbox or SIGMASMITH?

Lean Management Toolbox ships an update every 2 months, and SIGMASMITH every 3 weeks. Most recently, Lean Management Toolbox was updated on July 22, 2026 and SIGMASMITH on June 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*