# Ideal Halo vs Open When

The clearest difference is in-app purchases: Ideal Halo at none against Open When's 3. Ideal Halo also leads on iOS requirement (12.4 vs 18.2). On price, ads and device support there is nothing between them.

Both are free to download. Open When sells 3 in-app purchases, starting at $1.99 per month. Ideal Halo asks for nothing beyond the download.

## The numbers

| Metric | Ideal Halo | Open When |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 11.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 66 MB | 13 MB |
| Requires iOS | **12.4** | 18.2 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ideal Boilers](https://appshunter.io/developer/1326270378) | [Ricardo Hurla](https://appshunter.io/developer/1845708851) |

## What reviewers say

### Ideal Halo

[App page](https://appshunter.io/ios/app/ideal-halo/id1462761803)

Control your home's heating remotely via your smartphone. Set custom schedules, adjust temperatures on the go, and optimize energy usage with features like geolocation and weather compensation. Receive instant fault notifications and smart support for your boiler or heat pump.

**Highlights:** Remote heating control, Customizable schedules, Geolocation heating adjustments, Smart home integration, Boiler/heat pump fault notifications, Real-time weather compensation

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

**In-app purchases:** none


### Open When

[App page](https://appshunter.io/ios/app/open-when-verses/id6759288078)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Access | $1.99 | per month |
| Pro Access | $11.99 | per year |
| Open When Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is Ideal Halo free?

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

### Is Open When free?

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

### Do Ideal Halo or Open When have ads?

Neither Ideal Halo nor Open When shows ads.

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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.*