# Perenne Note. Digital Notebook vs FormulaFX Pro

The clearest difference is in-app purchases: FormulaFX Pro at none against Perenne Note. Digital Notebook's 4. FormulaFX Pro also leads on iOS requirement (15.0 vs 17.6). Perenne Note. Digital Notebook's advantage is ads (none vs shown) and update cadence (weekly vs every 3 weeks). On price and device support there is nothing between them.

Both are free to download. Perenne Note. Digital Notebook sells 4 in-app purchases, starting at $2.99 per month. FormulaFX Pro asks for nothing beyond the download.

Perenne Note. Digital Notebook ships an update weekly, FormulaFX Pro every 3 weeks. The most recent releases landed on October 4, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Perenne Note. Digital Notebook | FormulaFX Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (5 ratings)](https://appshunter.io/ios/app/perenne-note-digital-notebook/id6758993077/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 48 MB | 10 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Nicholas Compagnoni](https://appshunter.io/developer/1876200579) | [INZA KONE](https://appshunter.io/developer/1896540924) |

## What reviewers say

### Perenne Note. Digital Notebook

[App page](https://appshunter.io/ios/app/perenne-note-digital-notebook/id6758993077)

A minimalist digital notebook designed for iPad and iPhone, offering a realistic writing and sketching experience with Apple Pencil. Organize notes, sketches, and lists with customizable notebooks and real-time syncing.

**Highlights:** Realistic pen and pencil tools, Customizable notebooks and paper styles, iPhone companion app with iCloud sync, Quick notes with rich text and checklists, Reminders and calendar integration, Desk feature for floating elements, PDF and PNG export options

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Annual | $22.99 | per year |
| Single Notebook | $3.99 | one-time |
| Notebook Bundle | $8.99 | one-time |


### FormulaFX Pro

[App page](https://appshunter.io/ios/app/formulafx-pro/id6807653687)

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

**In-app purchases:** none


## Frequently asked questions

### Is Perenne Note. Digital Notebook free?

Perenne Note. Digital Notebook is free to download, with in-app purchases available.

### Is FormulaFX Pro free?

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

### Do Perenne Note. Digital Notebook or FormulaFX Pro have ads?

FormulaFX Pro shows ads; Perenne Note. Digital Notebook does not.

### Which is updated more often, Perenne Note. Digital Notebook or FormulaFX Pro?

Perenne Note. Digital Notebook ships an update weekly, and FormulaFX Pro every 3 weeks. Most recently, Perenne Note. Digital Notebook was updated on October 4, 2026 and FormulaFX Pro on October 1, 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.*