# IMPAC 3.0 vs Engichat

The clearest difference is in-app purchases: IMPAC 3.0 at none against Engichat's 3. IMPAC 3.0 also leads on iOS requirement (11.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Engichat sells 3 in-app purchases, starting at $7.99 per month. IMPAC 3.0 asks for nothing beyond the download.

IMPAC 3.0 ships an update monthly, Engichat fortnightly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | IMPAC 3.0 | Engichat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/engichat-your-ai-engineer/id6763093657/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | — | Freemium |
| Size | 60 MB | 56 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [entomo Pte Ltd](https://appshunter.io/developer/984444300) | [Securestack Technologies Inc.](https://appshunter.io/developer/1895159765) |

## What reviewers say

### IMPAC 3.0

[App page](https://appshunter.io/ios/app/impac-30/id1450373684)

**Features:** macOS Compatibility

**In-app purchases:** none


### Engichat

[App page](https://appshunter.io/ios/app/engichat-your-ai-engineer/id6763093657)

This AI assistant streamlines engineering tasks by providing instant calculations, code compliance checks, and CAD automation. It offers material recommendations and integrates with Google Workspace for seamless collaboration and reporting.

**Highlights:** Instant structural calculations, Code compliance verification, CAD automation with AutoLISP, AI-powered material selection, Google Workspace integration, Multi-agent system for specialized tasks, Team collaboration features

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Plan | $7.99 | per month |
| Pro Plan | $19.99 | per month |
| Premium Plan | $49.99 | per month |


## Frequently asked questions

### Is IMPAC 3.0 free?

IMPAC 3.0 is free to download, with no in-app purchases.

### Is Engichat free?

Engichat is free to download, with in-app purchases available.

### Do IMPAC 3.0 or Engichat have ads?

Neither IMPAC 3.0 nor Engichat shows ads.

### Which is updated more often, IMPAC 3.0 or Engichat?

IMPAC 3.0 ships an update monthly, and Engichat fortnightly. Most recently, IMPAC 3.0 was updated on November 2, 2026 and Engichat on October 31, 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.*