# TRIGGER ACS Plus vs IOTuning

The clearest difference is iOS requirement: TRIGGER ACS Plus at 8.0 against IOTuning's 15.2. On price, update cadence, ads and in-app purchases 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 Plus ships an update every 3 months, IOTuning every 2 months. The most recent releases landed on June 11, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | TRIGGER ACS Plus | IOTuning |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.9 (42 ratings)](https://appshunter.io/ios/app/trigger-acs-plus/id1361409621/reviews)** | — |
| Number of ratings | **42** | — |
| Positive reviews | 21.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 14 MB | 5 MB |
| Requires iOS | **8.0** | 15.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oracle](https://appshunter.io/developer/1448002966) | [IOTuning GmbH](https://appshunter.io/developer/1622403581) |

## What reviewers say

### TRIGGER ACS Plus

[App page](https://appshunter.io/ios/app/trigger-acs-plus/id1361409621)

Control wireless accessory systems for vehicles, including lighting and power functions. Customize settings, monitor battery voltage, and set alerts for low power. Simplify accessory installation by eliminating the need for extensive wiring.

**Highlights:** Control wireless accessory controllers, Manage power and dimming functions, Strobe feature for lighting, Set switch function (toggle/momentary), Customize accessory names, Monitor battery voltage, Set low-voltage cut-off and alerts

**In-app purchases:** none


### IOTuning

[App page](https://appshunter.io/ios/app/iotuning/id1622403579)

**In-app purchases:** none


## Frequently asked questions

### Is TRIGGER ACS Plus free?

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

### Is IOTuning free?

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

### Do TRIGGER ACS Plus or IOTuning have ads?

Neither TRIGGER ACS Plus nor IOTuning shows ads.

### Which is updated more often, TRIGGER ACS Plus or IOTuning?

TRIGGER ACS Plus ships an update every 3 months, and IOTuning every 2 months. Most recently, TRIGGER ACS Plus was updated on June 11, 2026 and IOTuning on September 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.*