# TRIGGER ACS vs AMP Research PowerStep

The clearest difference is rating: TRIGGER ACS at 2.8 against AMP Research PowerStep's 1.8. TRIGGER ACS also leads on update cadence (every 2 months vs every 5 months) and review sentiment (30% vs 19%). AMP Research PowerStep's advantage is ratings volume (45 vs 15). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

TRIGGER ACS holds the better App Store score, 2.8 against 1.8. Both are backed by a comparable volume of ratings — 15 and 45 respectively. Written reviews point the same way: 30% of TRIGGER ACS's written reviews are positive against 19% of AMP Research PowerStep's.

TRIGGER ACS ships an update every 2 months, AMP Research PowerStep every 5 months. The most recent releases landed on October 14, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | TRIGGER ACS | AMP Research PowerStep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (15 ratings)](https://appshunter.io/ios/app/trigger-acs/id1206492897/reviews)** | [1.8 (45 ratings)](https://appshunter.io/ios/app/amp-research-powerstep/id1534532539/reviews) |
| Number of ratings | 15 | **45** |
| Positive reviews | **30.0% of reviews** | 18.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | Free |
| Size | 12 MB | 16 MB |
| Requires iOS | **8.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oracle](https://appshunter.io/developer/1448002966) | [Lund International Holding Company](https://appshunter.io/developer/1534532541) |

## What reviewers say

### TRIGGER ACS

[App page](https://appshunter.io/ios/app/trigger-acs/id1206492897)

Control vehicle electronic accessories like lights with your phone. This app offers on/off, dimming, and flashing functions, plus customizable accessory names. It simplifies accessory installation by eliminating the need for extensive wiring.

**Highlights:** Bluetooth control of accessories, On/off and dimming functions, Flashing for lighting, Customizable accessory names, Simplified installation, Fused circuits with LED indicators

**In-app purchases:** none


### AMP Research PowerStep

[App page](https://appshunter.io/ios/app/amp-research-powerstep/id1534532539)

Control your electric-powered running boards with this app. Adjust step position, and manage integrated or auxiliary LED lighting systems directly from your smartphone.

**Highlights:** Control electric running board position, Override step up/down, Power integrated LED lights, Power auxiliary LED lights, Smartphone control

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TRIGGER ACS free?

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

### Is AMP Research PowerStep free?

AMP Research PowerStep is free to download, with no in-app purchases.

### Which has better reviews, TRIGGER ACS or AMP Research PowerStep?

TRIGGER ACS is rated higher. TRIGGER ACS averages 2.8 out of 5 from 15 ratings, while AMP Research PowerStep averages 1.8 from 45 ratings.

### Do TRIGGER ACS or AMP Research PowerStep have ads?

Neither TRIGGER ACS nor AMP Research PowerStep shows ads.

### Which is updated more often, TRIGGER ACS or AMP Research PowerStep?

TRIGGER ACS ships an update every 2 months, and AMP Research PowerStep every 5 months. Most recently, TRIGGER ACS was updated on October 14, 2026 and AMP Research PowerStep on October 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.*