# LECO Cornerstone vs ArcAir

The clearest difference is rating: LECO Cornerstone at 5.0 against ArcAir's 4.0. LECO Cornerstone also leads on in-app purchases (none vs 2) and update cadence (every 5 weeks vs every 5 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. ArcAir sells 2 one-off in-app purchases. LECO Cornerstone asks for nothing beyond the download.

LECO Cornerstone holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 5 and 8 respectively.

LECO Cornerstone ships an update every 5 weeks, ArcAir every 5 months. The most recent releases landed on June 8, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | LECO Cornerstone | ArcAir |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/leco-cornerstone/id546739092/reviews)** | [4.0 (8 ratings)](https://appshunter.io/ios/app/arcair/id1133492319/reviews) |
| Number of ratings | 5 | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 59 MB | 21 MB |
| Requires iOS | **8.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [LECO Corporation](https://appshunter.io/developer/546739095) | [Hamilton Bonaduz AG](https://appshunter.io/developer/530886485) |

## What reviewers say

### LECO Cornerstone

[App page](https://appshunter.io/ios/app/leco-cornerstone/id546739092)

Monitor your LECO instrument's status and results remotely from your device. View data, check maintenance, and receive vital updates on analysis completion and system information.

**Highlights:** Remote instrument status monitoring, View set and replicate results, Data visualization on plots, Check maintenance status, Access methods and details, Receive vital message updates

**Features:** macOS Compatibility

**In-app purchases:** none


### ArcAir

[App page](https://appshunter.io/ios/app/arcair/id1133492319)

This app facilitates the online monitoring and visualization of various sensor data for biotechnological processes. It allows wireless communication with multiple sensors simultaneously and provides central data management, reporting, and validation for sensor calibration and configuration, supporting GMP guidelines.

**Highlights:** Online sensor monitoring, Data visualization, Wireless sensor communication, Central data management, Sensor calibration validation, Paperless workflow support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ArcAir Basic Version | Free | one-time |
| ArcAir Advanced Version | $199.99 | one-time |


## Frequently asked questions

### Is LECO Cornerstone free?

LECO Cornerstone is free to download, with no in-app purchases.

### Is ArcAir free?

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

### Which has better reviews, LECO Cornerstone or ArcAir?

LECO Cornerstone is rated higher. LECO Cornerstone averages 5.0 out of 5 from 5 ratings, while ArcAir averages 4.0 from 8 ratings.

### Do LECO Cornerstone or ArcAir have ads?

Neither LECO Cornerstone nor ArcAir shows ads.

### Which is updated more often, LECO Cornerstone or ArcAir?

LECO Cornerstone ships an update every 5 weeks, and ArcAir every 5 months. Most recently, LECO Cornerstone was updated on June 8, 2026 and ArcAir on September 20, 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.*