# Unbend Flat Pattern Calculator vs Foldline

The clearest difference is ads: Foldline at none against Unbend Flat Pattern Calculator's shown. Unbend Flat Pattern Calculator's advantage is iOS requirement (16.4 vs 18.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Unbend Flat Pattern Calculator sells 1 one-off in-app purchase and Foldline sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Unbend Flat Pattern Calculator ships an update fortnightly, Foldline every 8 days. The most recent releases landed on October 19, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Unbend Flat Pattern Calculator | Foldline |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 8 days** |
| Size | 60 MB | 7 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Omer Faruk BAGCI](https://appshunter.io/developer/1850264269) | [ANDREI RUSTI](https://appshunter.io/developer/1797920213) |

## What reviewers say

### Unbend Flat Pattern Calculator

[App page](https://appshunter.io/ios/app/unbend-flat-pattern-calculator/id6797460542)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unbend Pro Unlock | $14.99 | one-time |


### Foldline

[App page](https://appshunter.io/ios/app/foldline-pdf-editor-and-scanner/id6815394419)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Foldline Pro | $4.99 | one-time |


## Frequently asked questions

### Is Unbend Flat Pattern Calculator free?

Unbend Flat Pattern Calculator is free to download, with in-app purchases available.

### Is Foldline free?

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

### Do Unbend Flat Pattern Calculator or Foldline have ads?

Unbend Flat Pattern Calculator shows ads; Foldline does not.

### Which is updated more often, Unbend Flat Pattern Calculator or Foldline?

Unbend Flat Pattern Calculator ships an update fortnightly, and Foldline every 8 days. Most recently, Unbend Flat Pattern Calculator was updated on October 19, 2026 and Foldline on October 31, 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.*