# SIGMASMITH vs oee.ai

The clearest difference is in-app purchases: oee.ai at none against SIGMASMITH's 3. oee.ai also leads on iOS requirement (13.0 vs 15.6). SIGMASMITH's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads and device support there is nothing between them.

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

SIGMASMITH ships an update every 3 weeks, oee.ai every 2 months. The most recent releases landed on June 24, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | SIGMASMITH | oee.ai |
| --- | --- | --- |
| 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 | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 64 MB | 23 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Richard Valois](https://appshunter.io/developer/1724050357) | [ifp Software GmbH](https://appshunter.io/developer/1747927708) |

## What reviewers say

### 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 |


### oee.ai

[App page](https://appshunter.io/ios/app/oeeai/id6503070126)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SIGMASMITH free?

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

### Is oee.ai free?

oee.ai is free to download, with no in-app purchases.

### Do SIGMASMITH or oee.ai have ads?

Neither SIGMASMITH nor oee.ai shows ads.

### Which is updated more often, SIGMASMITH or oee.ai?

SIGMASMITH ships an update every 3 weeks, and oee.ai every 2 months. Most recently, SIGMASMITH was updated on June 24, 2026 and oee.ai on September 21, 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.*