# Harp Strings vs SMRT Lighting Controls

The clearest difference is update cadence: Harp Strings at every 8 days against SMRT Lighting Controls's every 4 months. Harp Strings also leads on iOS requirement (9.0 vs 12.0). 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.

Harp Strings ships an update every 8 days, SMRT Lighting Controls every 4 months. The most recent releases landed on October 4, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Harp Strings | SMRT Lighting Controls |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/harp-strings/id1095138723/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 4 months |
| Monetization | Free | — |
| Size | 34 MB | 25 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bitwise Systems Inc](https://appshunter.io/developer/1095138722) | [SMRT Commercial Lighting Controls](https://appshunter.io/developer/1696557508) |

## What reviewers say

### Harp Strings

[App page](https://appshunter.io/ios/app/harp-strings/id1095138723)

Adjust audio output for optimal speaker and room acoustics. Offers advanced tone controls for fine-tuning, a mute switch, and the ability to edit amplifier names. Tailor your sound experience with precision.

**Highlights:** Tone controls for speaker and room matching, Advanced tone tuning, Mute switch, Amplifier name editor

**Features:** macOS Compatibility

**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 Harp Strings free?

Harp Strings 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 Harp Strings or SMRT Lighting Controls have ads?

Neither Harp Strings nor SMRT Lighting Controls shows ads.

### Which is updated more often, Harp Strings or SMRT Lighting Controls?

Harp Strings ships an update every 8 days, and SMRT Lighting Controls every 4 months. Most recently, Harp Strings was updated on October 4, 2026 and SMRT Lighting Controls on October 2, 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.*