# Petal Layout Pro vs Retrotype

The clearest difference is review sentiment: Retrotype at 86% against Petal Layout Pro's 0%. Retrotype also leads on price (Free vs $3.99) and update cadence (every 3 months vs every 41 months). Petal Layout Pro's advantage is in-app purchases (none vs 1). On ads, monetization model, device support and iOS requirement there is nothing between them.

Retrotype is free to download; Petal Layout Pro costs $3.99 up front. Retrotype sells 1 one-off in-app purchase. Petal Layout Pro asks for nothing beyond the download.

Petal Layout Pro ships an update every 41 months, Retrotype every 3 months. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Petal Layout Pro | Retrotype |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[4.3 (6 ratings)](https://appshunter.io/ios/app/retrotype/id6752917326/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | 0.0% of reviews | **85.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 3 months** |
| Monetization | Paid | Paid |
| Size | 1 MB | 27 MB |
| Requires iOS | 16.1 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Imran Pinjara](https://appshunter.io/developer/1484488781) | [Good Loop Software LLC](https://appshunter.io/developer/1852855355) |

## 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


### Retrotype

[App page](https://appshunter.io/ios/app/retrotype/id6752917326)

Experience the satisfying feel of a classic typewriter on your device. Choose from multiple vintage models, customize sounds and visuals, and enjoy distraction-free writing with authentic haptic and audio feedback.

**Highlights:** Authentic typewriter models, Customizable sound packs, Haptic feedback, Multiple color palettes and paper themes, External keyboard support, Distraction-free writing environment

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Everything | $4.99 | one-time |


## Frequently asked questions

### Is Petal Layout Pro free?

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

### Is Retrotype free?

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

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

Neither Petal Layout Pro nor Retrotype shows ads.

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

Petal Layout Pro ships an update every 41 months, and Retrotype every 3 months. Most recently, Petal Layout Pro was updated on October 1, 2026 and Retrotype on October 7, 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.*