# Rola vs Calq_

The clearest difference is in-app purchases: Rola at none against Calq_'s 2. Rola also leads on device support (3 vs 1). Calq_'s advantage is update cadence (every 4 days vs every 6 weeks). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Calq_ sells 2 in-app purchases, starting at $0.99 per month. Rola asks for nothing beyond the download.

Rola ships an update every 6 weeks, Calq_ every 4 days. The most recent releases landed on October 18, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Rola | Calq_ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Size | 22 MB | 14 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Red7 Systems Inc](https://appshunter.io/developer/1261525256) | [Agustin Dell Aquila](https://appshunter.io/developer/1715197871) |

## What reviewers say

### Rola

[App page](https://appshunter.io/ios/app/rola-chem-controllers/id1673144672)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calq_

[App page](https://appshunter.io/ios/app/calq/id6471381452)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calq+ Monthly | $0.99 | per month |
| Calq+ Lifetime | $7.99 | one-time |


## Frequently asked questions

### Is Rola free?

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

### Is Calq_ free?

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

### Do Rola or Calq_ have ads?

Neither Rola nor Calq_ shows ads.

### Which is updated more often, Rola or Calq_?

Rola ships an update every 6 weeks, and Calq_ every 4 days. Most recently, Rola was updated on October 18, 2026 and Calq_ on October 8, 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.*