# Techno System vs VULCANAPP

The clearest difference is ads: Techno System at none against VULCANAPP's shown. Techno System also leads on monetization model (free vs ad-supported) and iOS requirement (13.0 vs 15.0). VULCANAPP's advantage is update cadence (every 6 months vs every 19 months). On price, review sentiment, 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.

Techno System ships an update every 19 months, VULCANAPP every 6 months. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Techno System | VULCANAPP |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 19 months | **Every 6 months** |
| Monetization | **Free** | Ad-supported |
| Size | 10 MB | 56 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TNX srl](https://appshunter.io/developer/460967609) | [SOCIETA ITALIANA GAS LIQUIDI SPA](https://appshunter.io/developer/1482736870) |

## What reviewers say

### Techno System

[App page](https://appshunter.io/ios/app/techno-system/id1083928221)

This application assists users in identifying suitable plate heat exchangers for standard civilian uses. It also facilitates contact with technical support for industrial applications and helps locate nearby suppliers. Additional features include a unit converter and a comparison tool for exchangers.

**Highlights:** Identify heat exchangers for civilian applications, Contact tech support for industrial applications, Find closest supplier, Technical measurement unit conversion, Compare Techno System exchangers

**Features:** macOS Compatibility

**In-app purchases:** none


### VULCANAPP

[App page](https://appshunter.io/ios/app/vulcanapp/id1482736871)

This payment app streamlines purchases of LNG and petroleum products for private individuals and transport companies. It provides a unified payment method across the entire Vulcan refueling corridor.

**Highlights:** Streamlined payments for GNL and petroleum products, Dedicated for private and transport companies, Unified payment across Vulcan refueling corridor, Facilitates fuel purchases

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Techno System free?

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

### Is VULCANAPP free?

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

### Do Techno System or VULCANAPP have ads?

VULCANAPP shows ads; Techno System does not.

### Which is updated more often, Techno System or VULCANAPP?

Techno System ships an update every 19 months, and VULCANAPP every 6 months. Most recently, Techno System was updated on September 23, 2026 and VULCANAPP on September 24, 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.*