# OTIS Security vs Blue Sky Energy

The clearest difference is update cadence: Blue Sky Energy at every 11 days against OTIS Security's every 6 weeks. 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.

OTIS Security ships an update every 6 weeks, Blue Sky Energy every 11 days. The most recent releases landed on October 30, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | OTIS Security | Blue Sky Energy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 11 days** |
| Size | 53 MB | 61 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ТОО OTIS](https://appshunter.io/developer/1042348590) | [Blue Sky Energy](https://appshunter.io/developer/1680895272) |

## What reviewers say

### OTIS Security

[App page](https://appshunter.io/ios/app/otis-security/id6443658534)

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

**In-app purchases:** none


### Blue Sky Energy

[App page](https://appshunter.io/ios/app/blue-sky-energy/id6447302025)

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

**In-app purchases:** none


## Frequently asked questions

### Is OTIS Security free?

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

### Is Blue Sky Energy free?

Blue Sky Energy is free to download, with no in-app purchases.

### Do OTIS Security or Blue Sky Energy have ads?

Neither OTIS Security nor Blue Sky Energy shows ads.

### Which is updated more often, OTIS Security or Blue Sky Energy?

OTIS Security ships an update every 6 weeks, and Blue Sky Energy every 11 days. Most recently, OTIS Security was updated on October 30, 2026 and Blue Sky Energy on November 3, 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.*