# Smart Scent Pro vs Signature Notes

The clearest difference is ads: Smart Scent Pro at none against Signature Notes's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Smart Scent Pro ships an update every 2 months, Signature Notes every 5 weeks. The most recent releases landed on September 10, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Smart Scent Pro | Signature Notes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/signature-notes/id6762539686/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | — | Ad-supported |
| Size | 20 MB | 40 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [永锦 罗](https://appshunter.io/developer/1444842458) | [William Wilborn](https://appshunter.io/developer/1893476384) |

## What reviewers say

### Smart Scent Pro

[App page](https://appshunter.io/ios/app/smart-scent-pro/id1558962248)

**In-app purchases:** none


### Signature Notes

[App page](https://appshunter.io/ios/app/signature-notes/id6762539686)

Capture ideas in various formats, from rich text and drawings to audio, video, and annotated images. Organize and share notes easily, and sharpen your mind with an integrated sliding puzzle game offering customizable challenges and modes.

**Highlights:** Multiple note types (rich text, drawing, multimedia, checklists, annotated images), Full-text search and filtering, Integrated sliding puzzle game, Customizable puzzle difficulty and modes, Custom themes and background music, Productivity and puzzle statistics tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is Smart Scent Pro free?

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

### Is Signature Notes free?

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

### Do Smart Scent Pro or Signature Notes have ads?

Signature Notes shows ads; Smart Scent Pro does not.

### Which is updated more often, Smart Scent Pro or Signature Notes?

Smart Scent Pro ships an update every 2 months, and Signature Notes every 5 weeks. Most recently, Smart Scent Pro was updated on September 10, 2026 and Signature Notes on September 18, 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.*