# Marine Debris Tracker vs Touch GIS

The clearest difference is rating: Marine Debris Tracker at 5.0 against Touch GIS's 4.0. Marine Debris Tracker also leads on in-app purchases (none vs 2) and iOS requirement (12.4 vs 15.6). Touch GIS's advantage is ratings volume (32 vs 1) and update cadence (every 3 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Touch GIS sells 2 in-app purchases, starting at $29.99 per month. Marine Debris Tracker asks for nothing beyond the download.

Marine Debris Tracker holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Touch GIS has 32 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 39% of Marine Debris Tracker's written reviews are positive against 50% of Touch GIS's, so the app with the better star average is not the one people write more warmly about.

Marine Debris Tracker ships an update every 2 months, Touch GIS every 3 weeks. Both last shipped on October 23, 2026.

## The numbers

| Metric | Marine Debris Tracker | Touch GIS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/marine-debris-tracker/id432758761/reviews)** | [4.0 (32 ratings)](https://appshunter.io/ios/app/touch-gis/id1469504766/reviews) |
| Number of ratings | 1 | **32** |
| Positive reviews | 38.9% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 29 MB | 79 MB |
| Requires iOS | **12.4** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kyle Johnsen](https://appshunter.io/developer/1021572657) | [TouchGIS](https://appshunter.io/developer/1737526594) |

## What reviewers say

### Marine Debris Tracker

[App page](https://appshunter.io/ios/app/marine-debris-tracker/id432758761)

Contribute to a global citizen science movement by reporting litter and plastic pollution. Your data helps build a comprehensive understanding of environmental issues, informing research and policy.

**Highlights:** Report litter and debris, Contribute to citizen science, Track inland and marine pollution, Access open-data platform, Generate scientific findings, Inform policy decisions

**Features:** macOS Compatibility

**In-app purchases:** none


### Touch GIS

[App page](https://appshunter.io/ios/app/touch-gis/id1469504766)

This professional tool simplifies field data collection and mapping. It allows users to create and customize data forms, collect various data types offline, and export them to standard GIS formats. Professionals across diverse fields utilize it to enhance their fieldwork.

**Highlights:** Create Points, Lines, Polygons, Circles, Customizable attribute forms, Offline map tile saving, Export to industry standard formats, Attach photos to locations, Clinometer tool for orientation, Add custom base maps and overlays

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Subscription (Monthly) | $29.99 | per month |
| Pro License (Annual) | $299.99 | per year |


## Frequently asked questions

### Is Marine Debris Tracker free?

Marine Debris Tracker is free to download, with no in-app purchases.

### Is Touch GIS free?

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

### Which has better reviews, Marine Debris Tracker or Touch GIS?

Marine Debris Tracker is rated higher. Marine Debris Tracker averages 5.0 out of 5 from 1 ratings, while Touch GIS averages 4.0 from 32 ratings.

### Do Marine Debris Tracker or Touch GIS have ads?

Neither Marine Debris Tracker nor Touch GIS shows ads.

### Which is updated more often, Marine Debris Tracker or Touch GIS?

Marine Debris Tracker ships an update every 2 months, and Touch GIS every 3 weeks. Most recently, Marine Debris Tracker was updated on October 23, 2026 and Touch GIS on October 23, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*