# docolab vs hvac

The clearest difference is price: docolab at Free against hvac's $17.99. docolab also leads on iOS requirement (11.0 vs 15.1). hvac's advantage is update cadence (fortnightly vs monthly). On ads, in-app purchases and device support there is nothing between them.

docolab is free to download; hvac costs $17.99 up front. Neither carries in-app purchases, so what you see is what you pay.

docolab ships an update monthly, hvac fortnightly. The most recent releases landed on October 26, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | docolab | hvac |
| --- | --- | --- |
| Price | **Free** | $17.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Size | 67 MB | 35 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [docolab](https://appshunter.io/developer/1251470428) | [Ahmed Brik](https://appshunter.io/developer/1876943925) |

## What reviewers say

### docolab

[App page](https://appshunter.io/ios/app/docolab/id1251470429)

**Features:** macOS Compatibility

**In-app purchases:** none


### hvac

[App page](https://appshunter.io/ios/app/hvac-aide-memoire/id6759122128)

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

**In-app purchases:** none


## Frequently asked questions

### Is docolab free?

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

### Is hvac free?

hvac costs $17.99, with no in-app purchases.

### Do docolab or hvac have ads?

Neither docolab nor hvac shows ads.

### Which is updated more often, docolab or hvac?

docolab ships an update monthly, and hvac fortnightly. Most recently, docolab was updated on October 26, 2026 and hvac 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.*