# Profit On Site vs Elbow

The clearest difference is in-app purchases: Profit On Site at none against Elbow's 2. Elbow's advantage is iOS requirement (13.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Elbow sells 2 in-app purchases, starting at $4.99 per 7 days. Profit On Site asks for nothing beyond the download.

Profit On Site ships an update every 3 months, Elbow every 4 months. The most recent releases landed on October 1, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Profit On Site | Elbow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/elbow-flat-pattern/id6471258565/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | — | Free with in-app purchases |
| Size | 40 MB | 58 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | +4 |
| Developer | [Piping Logistics](https://appshunter.io/developer/1677360438) | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) |

## What reviewers say

### Profit On Site

[App page](https://appshunter.io/ios/app/profit-on-site/id6446322545)

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

**In-app purchases:** none


### Elbow

[App page](https://appshunter.io/ios/app/elbow-flat-pattern/id6471258565)

This tool simplifies the creation of accurate flat patterns for elbow fittings in sheet metal fabrication, HVAC, and piping. Input key parameters like angle and dimensions to instantly generate precise calculations for cutting and shaping materials, saving time and reducing errors.

**Highlights:** Calculate inner arc length, Determine elbow angle and cutting dimensions, Support custom angle inputs, Accurate flat pattern development, Quick and reliable results

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Monthly | $9.99 | per month |


## Frequently asked questions

### Is Profit On Site free?

Profit On Site is free to download, with no in-app purchases.

### Is Elbow free?

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

### Do Profit On Site or Elbow have ads?

Neither Profit On Site nor Elbow shows ads.

### Which is updated more often, Profit On Site or Elbow?

Profit On Site ships an update every 3 months, and Elbow every 4 months. Most recently, Profit On Site was updated on October 1, 2026 and Elbow on October 13, 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.*