# IMPAC 3.0 vs GIS Lite

The clearest difference is update cadence: GIS Lite at every 6 days against IMPAC 3.0's monthly. IMPAC 3.0's advantage is iOS requirement (11.0 vs 13.0). 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.

IMPAC 3.0 ships an update monthly, GIS Lite every 6 days. The most recent releases landed on October 19, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | IMPAC 3.0 | GIS Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/gis-lite/id1548266173/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Monetization | — | Free |
| Size | 60 MB | 30 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [entomo Pte Ltd](https://appshunter.io/developer/984444300) | [Ioannis Sofos](https://appshunter.io/developer/1548266175) |

## What reviewers say

### IMPAC 3.0

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

**Features:** macOS Compatibility

**In-app purchases:** none


### GIS Lite

[App page](https://appshunter.io/ios/app/gis-lite/id1548266173)

This app allows users to view and collect spatial data on their mobile devices. It supports various file formats, enables field data collection with photo attachments, and offers note-taking capabilities directly on maps. Offline access and extensive projection support make it ideal for field work.

**Highlights:** Load and view DXF, KML, Shapefiles, GeoTiff, Collect field data with photo attachments, Freehand/pencil notes over maps, Export georeferenced TIFFs, Offline data access, Support for over 3000 projections, Apple Pencil support for object selection

**In-app purchases:** none


## Frequently asked questions

### Is IMPAC 3.0 free?

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

### Is GIS Lite free?

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

### Do IMPAC 3.0 or GIS Lite have ads?

Neither IMPAC 3.0 nor GIS Lite shows ads.

### Which is updated more often, IMPAC 3.0 or GIS Lite?

IMPAC 3.0 ships an update monthly, and GIS Lite every 6 days. Most recently, IMPAC 3.0 was updated on October 19, 2026 and GIS Lite on October 21, 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.*