# PROX vs Previjan

The clearest difference is update cadence: PROX at fortnightly against Previjan's monthly. Previjan's advantage is iOS requirement (13.0 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.

PROX ships an update fortnightly, Previjan monthly. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | PROX | Previjan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/prox/id1473606097/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free | — |
| Size | 72 MB | 33 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Venidera R&D](https://appshunter.io/developer/1297795408) | [FAC Sistemas](https://appshunter.io/developer/1568761421) |

## What reviewers say

### PROX

[App page](https://appshunter.io/ios/app/prox/id1473606097)

This app serves as an information channel for communities impacted by river level fluctuations. It allows users to monitor power plant operations, register their addresses, and receive flood alerts, fostering social development and relationships with surrounding communities.

**Highlights:** Monitor power plant operations, Register personal addresses, Receive flood alerts, Community information channel, Social development focus

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

**In-app purchases:** none


### Previjan

[App page](https://appshunter.io/ios/app/previjan/id1589129979)

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

**In-app purchases:** none


## Frequently asked questions

### Is PROX free?

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

### Is Previjan free?

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

### Do PROX or Previjan have ads?

Neither PROX nor Previjan shows ads.

### Which is updated more often, PROX or Previjan?

PROX ships an update fortnightly, and Previjan monthly. Most recently, PROX was updated on October 24, 2026 and Previjan 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.*