# Prefume vs GridLog

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

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

Prefume ships an update every 6 days, GridLog fortnightly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Prefume | GridLog |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Fortnightly |
| Monetization | Freemium | — |
| Size | 94 MB | 85 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 9+ | 12+ |
| Developer | [Anatole Ayadi](https://appshunter.io/developer/1772230666) | [Ishaan Kotecha](https://appshunter.io/developer/6776128312) |

## What reviewers say

### 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 |


### GridLog

[App page](https://appshunter.io/ios/app/gridlog-motorsport-tracker/id6776128310)

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

**In-app purchases:** none


## Frequently asked questions

### Is Prefume free?

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

### Is GridLog free?

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

### Do Prefume or GridLog have ads?

GridLog shows ads; Prefume does not.

### Which is updated more often, Prefume or GridLog?

Prefume ships an update every 6 days, and GridLog fortnightly. Most recently, Prefume was updated on October 30, 2026 and GridLog on October 31, 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.*