# SIAWISE vs Prognos Mobile

The clearest difference is update cadence: Prognos Mobile at every 2 months against SIAWISE's every 9 months. Prognos Mobile also leads on iOS requirement (9.0 vs 15.0). 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.

SIAWISE ships an update every 9 months, Prognos Mobile every 2 months. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SIAWISE | Prognos Mobile |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Size | 27 MB | 28 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SIA - Sociedade de Inovacao Ambiental, Lda.](https://appshunter.io/developer/914043079) | [ISA – Intelligent Sensing Anywhere](https://appshunter.io/developer/509469706) |

## What reviewers say

### SIAWISE

[App page](https://appshunter.io/ios/app/siawise/id914043076)

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

**In-app purchases:** none


### Prognos Mobile

[App page](https://appshunter.io/ios/app/prognos-mobile/id1328832100)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SIAWISE free?

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

### Is Prognos Mobile free?

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

### Do SIAWISE or Prognos Mobile have ads?

Neither SIAWISE nor Prognos Mobile shows ads.

### Which is updated more often, SIAWISE or Prognos Mobile?

SIAWISE ships an update every 9 months, and Prognos Mobile every 2 months. Most recently, SIAWISE was updated on October 16, 2026 and Prognos Mobile on October 8, 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.*