# HSP vs Scent

The clearest difference is review sentiment: HSP at 60% against Scent's 43%. HSP also leads on update cadence (every 3 weeks vs every 2 months). Scent's advantage is iOS requirement (11.0 vs 15.1). 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.

HSP ships an update every 3 weeks, Scent every 2 months. The most recent releases landed on October 10, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | HSP | Scent |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **60.0% of reviews** | 42.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 72 MB | 46 MB |
| Requires iOS | 15.1 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HSP 4x4](https://appshunter.io/developer/1516043561) | [Scent Australia](https://appshunter.io/developer/1552003364) |

## What reviewers say

### HSP

[App page](https://appshunter.io/ios/app/hsp/id1516043562)

Control your electric truck bed cover directly from your iPhone. Open, close, pause, and manage the integrated LED light with simple taps or voice commands. This app enhances your vehicle's utility with seamless integration.

**Highlights:** Open and close truck bed cover, Operate integrated LED light, Voice command via Siri, Control from iPhone, AirPods, EarPods, iWatch, Seamless vehicle integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Scent

[App page](https://appshunter.io/ios/app/scent/id1552317254)

Control your smart fragrance diffuser from your phone. Personalize diffusion frequency and strength, and shop for new scents all from one app. Enhance your environment with custom aromatherapy.

**Highlights:** ON/OFF Control, Adjust diffusion frequency, Set diffusion strength, Shop for new fragrances, Bluetooth connectivity

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HSP free?

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

### Is Scent free?

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

### Do HSP or Scent have ads?

Neither HSP nor Scent shows ads.

### Which is updated more often, HSP or Scent?

HSP ships an update every 3 weeks, and Scent every 2 months. Most recently, HSP was updated on October 10, 2026 and Scent on October 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*