# OIKOS Arckey 2.0 vs 3D Fire

The clearest difference is iOS requirement: 3D Fire at 8.0 against OIKOS Arckey 2.0's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | OIKOS Arckey 2.0 | 3D Fire |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/oikos-arckey-20/id1457339538/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | Every 5 months |
| Monetization | Free | — |
| Size | 147 MB | 24 MB |
| Requires iOS | 15.6 | **8.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oikos Venezia S.r.l.](https://appshunter.io/developer/1457339537) | [文 周](https://appshunter.io/developer/1071506295) |

## What reviewers say

### OIKOS Arckey 2.0

[App page](https://appshunter.io/ios/app/oikos-arckey-20/id1457339538)

Control Oikos doors with Arckey system remotely via Bluetooth or Gateway. Manage user access, set time slots, and view event logs. Update lock firmware and send technical data for support.

**Highlights:** Remote door opening via Bluetooth/Gateway, User access management, Time slot assignment, Event logging and sharing, Firmware updates, Technical log submission

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### 3D Fire

[App page](https://appshunter.io/ios/app/3d-fire/id1583451856)

**In-app purchases:** none


## Frequently asked questions

### Is OIKOS Arckey 2.0 free?

OIKOS Arckey 2.0 is free to download, with no in-app purchases.

### Is 3D Fire free?

3D Fire is free to download, with no in-app purchases.

### Do OIKOS Arckey 2.0 or 3D Fire have ads?

Neither OIKOS Arckey 2.0 nor 3D Fire shows ads.

### Which is updated more often, OIKOS Arckey 2.0 or 3D Fire?

OIKOS Arckey 2.0 ships an update every 5 months, and 3D Fire every 5 months. Most recently, OIKOS Arckey 2.0 was updated on October 21, 2026 and 3D Fire on October 25, 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.*