# I&C Pro vs Quel

The clearest difference is price: Quel at Free against I&C Pro's $7.99. Quel also leads on update cadence (every 5 days vs every 3 weeks) and iOS requirement (15.6 vs 18.4). I&C Pro's advantage is in-app purchases (none vs 3). On ads and device support there is nothing between them.

Quel is free to download; I&C Pro costs $7.99 up front. Quel sells 3 in-app purchases, starting at $9.99 per month. I&C Pro asks for nothing beyond the download.

I&C Pro ships an update every 3 weeks, Quel every 5 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | I&C Pro | Quel |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Size | 13 MB | 7 MB |
| Requires iOS | 18.4 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [I&C Pro](https://appshunter.io/developer/1812421237) | [Guillermo Alvarado](https://appshunter.io/developer/1841024589) |

## What reviewers say

### I&C Pro

[App page](https://appshunter.io/ios/app/i-and-c-pro-instrument-tools/id6745476067)

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

**In-app purchases:** none


### Quel

[App page](https://appshunter.io/ios/app/quel/id6752804071)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quel Monthly Plan | $9.99 | per month |
| Quel Yearly Plan | $69.99 | per year |
| Full Access | $4.99 | one-time |


## Frequently asked questions

### Is I&C Pro free?

I&C Pro costs $7.99, with no in-app purchases.

### Is Quel free?

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

### Do I&C Pro or Quel have ads?

Neither I&C Pro nor Quel shows ads.

### Which is updated more often, I&C Pro or Quel?

I&C Pro ships an update every 3 weeks, and Quel every 5 days. Most recently, I&C Pro was updated on October 30, 2026 and Quel on October 28, 2026.

---

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