# Drydown vs BatchKnow

The clearest difference is in-app purchases: BatchKnow at none against Drydown's 2. BatchKnow also leads on iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Drydown sells 2 in-app purchases, starting at $4.99 per month. BatchKnow asks for nothing beyond the download.

## The numbers

| Metric | Drydown | BatchKnow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (8 ratings)](https://appshunter.io/ios/app/drydown-scent-tracker/id6759278187/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 32 MB | 4 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Laurence Young](https://appshunter.io/developer/1871735379) | [焱鑫 韩](https://appshunter.io/developer/6816714717) |

## What reviewers say

### Drydown

[App page](https://appshunter.io/ios/app/drydown-scent-tracker/id6759278187)

This AI-powered fragrance advisor helps you manage your perfume collection, discover new scents, and get personalized recommendations based on weather, mood, and occasion. It offers smart layering suggestions and tracks your wear history to reveal your unique Scent DNA.

**Highlights:** AI-powered bottle scanning and identification, Personalized scent recommendations, Fragrance layering suggestions, Collection management and tracking, Wear journaling and Scent DNA analysis, Wishlist and purchase advisor

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Drydown Pro Monthly | $4.99 | per month |
| Drydown Pro Annual | $29.99 | per year |


### BatchKnow

[App page](https://appshunter.io/ios/app/batchknow-batch-code-checker/id6817256353)

**In-app purchases:** none


## Frequently asked questions

### Is Drydown free?

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

### Is BatchKnow free?

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

### Do Drydown or BatchKnow have ads?

Neither Drydown nor BatchKnow shows ads.

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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.*