# SmartJet for GulfStream vs Prefume

The clearest difference is in-app purchases: SmartJet for GulfStream at none against Prefume's 1. SmartJet for GulfStream also leads on iOS requirement (16.4 vs 26.0). Prefume's advantage is update cadence (every 6 days vs fortnightly). On price, ads and device support there is nothing between them.

Both are free to download. Prefume sells 1 one-off in-app purchase. SmartJet for GulfStream asks for nothing beyond the download.

SmartJet for GulfStream ships an update fortnightly, Prefume every 6 days. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | SmartJet for GulfStream | Prefume |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/prefume/id6749613019/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 6 days** |
| Monetization | — | Freemium |
| Size | 97 MB | 94 MB |
| Requires iOS | **16.4** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 9+ |
| Developer | [O0, Inc.](https://appshunter.io/developer/1731534210) | [Anatole Ayadi](https://appshunter.io/developer/1772230666) |

## What reviewers say

### SmartJet for GulfStream

[App page](https://appshunter.io/ios/app/smartjet-for-gulfstream/id6478664429)

**Features:** macOS Compatibility

**In-app purchases:** none


### Prefume

[App page](https://appshunter.io/ios/app/prefume/id6749613019)

This app helps you document and remember your fragrances through a timeline system. It offers personalized daily suggestions based on weather and your mood, and allows for effortless check-ins to track your scent experiences. All your data is kept private and analyzed on your device.

**Highlights:** Timeline-based fragrance journaling, Weather-aware daily suggestions, Smart collection rotation, Acquisition and spending insights, Testing workflows with reminders, Offline-first design for privacy

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extract - Premium Features | $24.99 | one-time |


## Frequently asked questions

### Is SmartJet for GulfStream free?

SmartJet for GulfStream is free to download, with no in-app purchases.

### Is Prefume free?

Prefume is free to download, with in-app purchases available.

### Do SmartJet for GulfStream or Prefume have ads?

Neither SmartJet for GulfStream nor Prefume shows ads.

### Which is updated more often, SmartJet for GulfStream or Prefume?

SmartJet for GulfStream ships an update fortnightly, and Prefume every 6 days. Most recently, SmartJet for GulfStream was updated on October 7, 2026 and Prefume on October 11, 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.*