# Odisia vs DEVARCHI GTB

The clearest difference is review sentiment: DEVARCHI GTB at 100% against Odisia's 0%. DEVARCHI GTB also leads on update cadence (every 6 weeks vs every 3 months). Odisia's advantage is iOS requirement (10.0 vs 13.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Odisia ships an update every 3 months, DEVARCHI GTB every 6 weeks. The most recent releases landed on October 8, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Odisia | DEVARCHI GTB |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 19 MB | 106 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lex Persona](https://appshunter.io/developer/472622163) | [DEVARCHI](https://appshunter.io/developer/1553603469) |

## What reviewers say

### Odisia

[App page](https://appshunter.io/ios/app/odisia/id1236797966)

This app facilitates the electronic signing of documents using various certificate types. It integrates with business applications, allowing users to sign documents via a web interface or by scanning a QR code.

**Highlights:** Electronic document signing, Supports cryptographic and software certificates, On-the-fly certificate generation, Integration with business applications, QR code transaction scanning, Mobile signing via web interface

**In-app purchases:** none


### DEVARCHI GTB

[App page](https://appshunter.io/ios/app/devarchi-gtb/id1553603467)

Control building equipment like lights, air conditioning, heating, and access remotely. This application offers a centralized interface for managing various building functions.

**Highlights:** Control lighting, Manage air conditioning, Adjust heating, Control access systems, Centralized building management

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

**In-app purchases:** none


## Frequently asked questions

### Is Odisia free?

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

### Is DEVARCHI GTB free?

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

### Do Odisia or DEVARCHI GTB have ads?

Neither Odisia nor DEVARCHI GTB shows ads.

### Which is updated more often, Odisia or DEVARCHI GTB?

Odisia ships an update every 3 months, and DEVARCHI GTB every 6 weeks. Most recently, Odisia was updated on October 8, 2026 and DEVARCHI GTB on September 16, 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.*