# EPA VSAT vs Ai

The clearest difference is rating: EPA VSAT at 5.0 against Ai's 4.5. EPA VSAT also leads on iOS requirement (16.6 vs 18.6). On price, ratings volume, update cadence and ads there is nothing between them.

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

EPA VSAT holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

EPA VSAT ships an update fortnightly, Ai monthly. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | EPA VSAT | Ai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/epa-vsat/id1191936044/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/ai-open-source-ai-assistant/id6755691873/reviews) |
| Number of ratings | 1 | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free | — |
| Size | 1 MB | 6 MB |
| Requires iOS | **16.6** | 18.6 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [United States Environmental Protection Agency (USEPA)](https://appshunter.io/developer/466052690) | [Michal Jach](https://appshunter.io/developer/1474348197) |

## What reviewers say

### EPA VSAT

[App page](https://appshunter.io/ios/app/epa-vsat/id1191936044)

This tool helps drinking water and wastewater systems assess risks from malevolent acts and natural hazards. It assists in evaluating improvements for enhanced security and resilience, aiding compliance with regulatory requirements.

**Highlights:** Risk assessment for water systems, Resilience evaluation, Security improvement assessment, Compliance with Safe Drinking Water Act, Assesses malevolent acts and natural hazards

**Features:** macOS Compatibility

**In-app purchases:** none


### Ai

[App page](https://appshunter.io/ios/app/ai-open-source-ai-assistant/id6755691873)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EPA VSAT free?

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

### Is Ai free?

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

### Which has better reviews, EPA VSAT or Ai?

EPA VSAT is rated higher. EPA VSAT averages 5.0 out of 5 from 1 ratings, while Ai averages 4.5 from 2 ratings.

### Do EPA VSAT or Ai have ads?

Neither EPA VSAT nor Ai shows ads.

### Which is updated more often, EPA VSAT or Ai?

EPA VSAT ships an update fortnightly, and Ai monthly. Most recently, EPA VSAT was updated on October 10, 2026 and Ai on October 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.*