# Lean Work Sampling vs SIGMASMITH

The clearest difference is update cadence: SIGMASMITH at every 3 weeks against Lean Work Sampling's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Lean Work Sampling sells 2 one-off in-app purchases and SIGMASMITH sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Lean Work Sampling ships an update every 3 months, SIGMASMITH every 3 weeks. The most recent releases landed on September 22, 2026 and June 24, 2026 respectively.

## The numbers

| Metric | Lean Work Sampling | SIGMASMITH |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sigmasmith/id6475358569/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 5 MB | 64 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Herve Kasparian](https://appshunter.io/developer/1232851521) | [Richard Valois](https://appshunter.io/developer/1724050357) |

## What reviewers say

### Lean Work Sampling

[App page](https://appshunter.io/ios/app/lean-work-sampling-lean-tool/id1256690217)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $1.99 | one-time |
| Large Tip | $7.99 | one-time |


### 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 Work Sampling free?

Lean Work Sampling is free to download, with in-app purchases available.

### Is SIGMASMITH free?

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

### Do Lean Work Sampling or SIGMASMITH have ads?

Neither Lean Work Sampling nor SIGMASMITH shows ads.

### Which is updated more often, Lean Work Sampling or SIGMASMITH?

Lean Work Sampling ships an update every 3 months, and SIGMASMITH every 3 weeks. Most recently, Lean Work Sampling was updated on September 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.*