# METIS 4 vs Local Sky

The clearest difference is update cadence: Local Sky at every 4 days against METIS 4's every 26 months. 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.

METIS 4 ships an update every 26 months, Local Sky every 4 days. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | METIS 4 | Local Sky |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 4 days** |
| Size | 3 MB | 23 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CROSS Zlin, a.s.](https://appshunter.io/developer/1068448316) | [Maksim Karatayeu](https://appshunter.io/developer/1752131817) |

## What reviewers say

### METIS 4

[App page](https://appshunter.io/ios/app/metis-4/id1068448317)

**Features:** macOS Compatibility

**In-app purchases:** none


### Local Sky

[App page](https://appshunter.io/ios/app/local-sky/id6621238609)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is METIS 4 free?

METIS 4 is free to download, with no in-app purchases.

### Is Local Sky free?

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

### Do METIS 4 or Local Sky have ads?

Neither METIS 4 nor Local Sky shows ads.

### Which is updated more often, METIS 4 or Local Sky?

METIS 4 ships an update every 26 months, and Local Sky every 4 days. Most recently, METIS 4 was updated on October 29, 2026 and Local Sky on October 25, 2026.

---

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