# Petal Layout Pro vs Notebooks

The clearest difference is review sentiment: Notebooks at 82% against Petal Layout Pro's 0%. Notebooks also leads on update cadence (monthly vs every 41 months). Petal Layout Pro's advantage is price ($3.99 vs $17.99) and in-app purchases (none vs 4). On ads, monetization model, device support and iOS requirement there is nothing between them.

Petal Layout Pro costs $3.99 and Notebooks $17.99 up front. Notebooks sells 4 one-off in-app purchases. Petal Layout Pro asks for nothing beyond the download.

Petal Layout Pro ships an update every 41 months, Notebooks monthly. Both last shipped on November 3, 2026.

## The numbers

| Metric | Petal Layout Pro | Notebooks |
| --- | --- | --- |
| Price | **$3.99** | $17.99 |
| Rating | — | **[4.7 (1.1K ratings)](https://appshunter.io/ios/app/notebooks-write-and-organize/id1490084838/reviews)** |
| Number of ratings | — | **1.1K** |
| Positive reviews | 0.0% of reviews | **82.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 41 months | **Monthly** |
| Monetization | Paid | Paid |
| Size | 1 MB | 48 MB |
| Requires iOS | **16.1** | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Imran Pinjara](https://appshunter.io/developer/1484488781) | [Alfons Schmid](https://appshunter.io/developer/297571754) |

## What reviewers say

### Petal Layout Pro

[App page](https://appshunter.io/ios/app/petal-layout-pro/id1486823832)

This app assists in the fabrication of spherical and hemispherical heads by calculating precise petal layouts. It supports various part divisions for accurate flat pattern development, ideal for pressure vessel and storage tank construction.

**Highlights:** Sphere petal layout calculation, Hemispherical head petal layout calculation, Multiple part divisions (12, 24, 48), Unit setting for mm/inches, Flat pattern development, Supports pressure vessel fabrication

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

**In-app purchases:** none


### Notebooks

[App page](https://appshunter.io/ios/app/notebooks-write-and-organize/id1490084838)

This app helps you write, organize, and manage documents, tasks, and files. It offers flexible writing modes, robust organization tools, and task management features, all while ensuring your data remains accessible and under your control.

**Highlights:** Formatted text, plain text, and Markdown writing, Create documents with styles, tables, and attachments, Organize with nested hierarchies and 'books', Task management with due dates and checklists, Wiki-style linking and backlinks, Full-text search, Cross-device synchronization

**Features:** Family Sharing, Siri integration, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Custom Storage Locations | $2.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Generous Tip | $4.99 | one-time |

**What reviewers like**

- 🚀 Powerful and flexible organization
- 🔒 Respects user data and privacy
- 👍 Reliable and stable
- 👍 Responsive and helpful developer
- 👍 Elegant and intuitive interface

**What reviewers complain about**

- 🐛 Occasional crashes and sync issues
- 🐛 Formatting and editing limitations
- 🐛 Steep learning curve for some users

**Reported bugs**

- Data loss after iOS upgrades
- Compatibility issues with newer iOS versions

**Requested features**

- Improved Markdown support
- More font and color customization options
- Better Apple Watch integration
- Export to Word format


## Frequently asked questions

### Is Petal Layout Pro free?

Petal Layout Pro costs $3.99, with no in-app purchases.

### Is Notebooks free?

Notebooks costs $17.99, and also offers in-app purchases.

### Do Petal Layout Pro or Notebooks have ads?

Neither Petal Layout Pro nor Notebooks shows ads.

### Which is updated more often, Petal Layout Pro or Notebooks?

Petal Layout Pro ships an update every 41 months, and Notebooks monthly. Most recently, Petal Layout Pro was updated on November 3, 2026 and Notebooks on November 3, 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.*