# OnlineLab VCS vs Challio

The clearest difference is update cadence: Challio at every 2 days against OnlineLab VCS's every 6 weeks. OnlineLab VCS's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OnlineLab VCS ships an update every 6 weeks, Challio every 2 days. The most recent releases landed on October 7, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | OnlineLab VCS | Challio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 days** |
| Size | 29 MB | 76 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Voice Clinical Systems](https://appshunter.io/developer/1255669777) | [Miguel Abraham Machado Contreras](https://appshunter.io/developer/6787999704) |

## What reviewers say

### OnlineLab VCS

[App page](https://appshunter.io/ios/app/onlinelab-vcs/id6502659918)

**Features:** macOS Compatibility

**In-app purchases:** none


### Challio

[App page](https://appshunter.io/ios/app/challio/id6787999702)

**In-app purchases:** none


## Frequently asked questions

### Is OnlineLab VCS free?

OnlineLab VCS is free to download, with no in-app purchases.

### Is Challio free?

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

### Do OnlineLab VCS or Challio have ads?

Neither OnlineLab VCS nor Challio shows ads.

### Which is updated more often, OnlineLab VCS or Challio?

OnlineLab VCS ships an update every 6 weeks, and Challio every 2 days. Most recently, OnlineLab VCS was updated on October 7, 2026 and Challio on September 30, 2026.

---

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