# deepscent vs Keyin Plus

The clearest difference is review sentiment: Keyin Plus at 100% against deepscent's 33%. Keyin Plus also leads on iOS requirement (13.0 vs 15.1). 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.

deepscent ships an update monthly, Keyin Plus every 6 weeks. The most recent releases landed on October 11, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | deepscent | Keyin Plus |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free | Free |
| Size | 86 MB | 35 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Deepscent labs](https://appshunter.io/developer/1439346212) | [RAONARK Ltd.](https://appshunter.io/developer/1581955892) |

## What reviewers say

### deepscent

[App page](https://appshunter.io/ios/app/deepscent/id1439346213)

Discover personalized fragrance blends for different spaces and moods. This app analyzes your preferences to create custom scent recipes and allows you to schedule diffusion times. Explore various scent combinations and adjust intensity for a tailored aromatic experience.

**Highlights:** Personalized scent blending, Space-specific fragrance recommendations, Adjustable scent intensity, Scent scheduling and reservations, Explore scent combinations, Scent tasting

**Features:** macOS Compatibility

**In-app purchases:** none


### Keyin Plus

[App page](https://appshunter.io/ios/app/keyin-plus/id1581955890)

Manage your smart door lock remotely. Receive real-time alerts for all lock activities, including locking, unlocking, and alarms. Automatically unlock your door when you approach and issue temporary keys to guests.

**Highlights:** Push notifications for lock events, Automatic door unlocking via Bluetooth, One-touch key issuance for family and guests, Detailed event history management, Door lock device settings, Manage multiple security devices

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is deepscent free?

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

### Is Keyin Plus free?

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

### Do deepscent or Keyin Plus have ads?

Neither deepscent nor Keyin Plus shows ads.

### Which is updated more often, deepscent or Keyin Plus?

deepscent ships an update monthly, and Keyin Plus every 6 weeks. Most recently, deepscent was updated on October 11, 2026 and Keyin Plus on October 6, 2026.

---

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