# STEELMAN vs AC Control

The clearest difference is price: STEELMAN at Free against AC Control's $4.99. STEELMAN also leads on device support (3 vs 1) and iOS requirement (9.0 vs 26.0). AC Control's advantage is update cadence (every 2 months vs every 22 months). On ads and in-app purchases there is nothing between them.

STEELMAN is free to download; AC Control costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

STEELMAN ships an update every 22 months, AC Control every 2 months. The most recent releases landed on October 2, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | STEELMAN | AC Control |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 20 MB | 6 MB |
| Requires iOS | **9.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [JS Products, Inc.](https://appshunter.io/developer/673417159) | [Christian Irack Flores Maldonado](https://appshunter.io/developer/639666145) |

## What reviewers say

### STEELMAN

[App page](https://appshunter.io/ios/app/steelman-smartear-lite/id673417156)

This app transforms your iOS device into a sound and vibration detection tool. It helps pinpoint defective or worn parts in machinery and vehicles by analyzing rattles, squeaks, and grinding sounds. Requires additional hardware for full functionality.

**Highlights:** Sound and vibration detection, Pinpoint defective parts, User-friendly interface, Analog/Digital display options, Adjustable sound settings, Informative user guide

**Features:** macOS Compatibility

**In-app purchases:** none


### AC Control

[App page](https://appshunter.io/ios/app/ac-control/id6766367447)

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

**In-app purchases:** none


## Frequently asked questions

### Is STEELMAN free?

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

### Is AC Control free?

AC Control costs $4.99, with no in-app purchases.

### Do STEELMAN or AC Control have ads?

Neither STEELMAN nor AC Control shows ads.

### Which is updated more often, STEELMAN or AC Control?

STEELMAN ships an update every 22 months, and AC Control every 2 months. Most recently, STEELMAN was updated on October 2, 2026 and AC Control on October 12, 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.*