# Profit On Site vs ElbowCalc

The clearest difference is in-app purchases: Profit On Site at none against ElbowCalc's 1. ElbowCalc's advantage is update cadence (every 5 weeks vs every 3 months) and iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. ElbowCalc sells 1 one-off in-app purchase. Profit On Site asks for nothing beyond the download.

Profit On Site ships an update every 3 months, ElbowCalc every 5 weeks. The most recent releases landed on October 1, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Profit On Site | ElbowCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (7 ratings)](https://appshunter.io/ios/app/elbowcalc-flat-pattern-maker/id6753796014/reviews)** |
| Number of ratings | — | **7** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 40 MB | 37 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) | [Sachinbhai Surani](https://appshunter.io/developer/1838685550) |

## 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


### ElbowCalc

[App page](https://appshunter.io/ios/app/elbowcalc-flat-pattern-maker/id6753796014)

This professional tool assists engineers and fabricators in quickly calculating and visualizing flat patterns for elbows and reducers. It provides instant pattern graphs with cut coordinates to streamline fabrication and minimize material waste.

**Highlights:** Calculate various elbow types, Generate flat pattern graphs, Supports reducer bends, Provides cut coordinates, Fast and precise calculations, Share and save results

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime premium | $19.99 | one-time |


## Frequently asked questions

### Is Profit On Site free?

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

### Is ElbowCalc free?

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

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

Neither Profit On Site nor ElbowCalc shows ads.

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

Profit On Site ships an update every 3 months, and ElbowCalc every 5 weeks. Most recently, Profit On Site was updated on October 1, 2026 and ElbowCalc on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*