# Controller Diagnostics vs SMRT Lighting Controls

The clearest difference is update cadence: Controller Diagnostics at every 3 weeks against SMRT Lighting Controls's every 4 months. SMRT Lighting Controls's advantage is iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Controller Diagnostics ships an update every 3 weeks, SMRT Lighting Controls every 4 months. The most recent releases landed on September 17, 2026 and February 20, 2026 respectively.

## The numbers

| Metric | Controller Diagnostics | SMRT Lighting Controls |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Size | 2 MB | 25 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lykketronic AS](https://appshunter.io/developer/1297619408) | [SMRT Commercial Lighting Controls](https://appshunter.io/developer/1696557508) |

## What reviewers say

### Controller Diagnostics

[App page](https://appshunter.io/ios/app/controller-diagnostics/id6444090201)

**Features:** Vision Pro support

**In-app purchases:** none


### SMRT Lighting Controls

[App page](https://appshunter.io/ios/app/smrt-lighting-controls/id6451098481)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Controller Diagnostics free?

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

### Is SMRT Lighting Controls free?

SMRT Lighting Controls is free to download, with no in-app purchases.

### Do Controller Diagnostics or SMRT Lighting Controls have ads?

Neither Controller Diagnostics nor SMRT Lighting Controls shows ads.

### Which is updated more often, Controller Diagnostics or SMRT Lighting Controls?

Controller Diagnostics ships an update every 3 weeks, and SMRT Lighting Controls every 4 months. Most recently, Controller Diagnostics was updated on September 17, 2026 and SMRT Lighting Controls on February 20, 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.*