# Leave No Trace Citizen Science vs TrashBlitz

The clearest difference is rating: Leave No Trace Citizen Science at 5.0 against TrashBlitz's 4.5. Leave No Trace Citizen Science also leads on review sentiment (100% vs 71%). TrashBlitz's advantage is ratings volume (13 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Leave No Trace Citizen Science holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: TrashBlitz has 13 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Leave No Trace Citizen Science's written reviews are positive against 71% of TrashBlitz's.

Leave No Trace Citizen Science ships an update every 6 weeks, TrashBlitz every 5 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Leave No Trace Citizen Science | TrashBlitz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/leave-no-trace-citizen-science/id1536428995/reviews)** | [4.5 (13 ratings)](https://appshunter.io/ios/app/trashblitz/id6447145347/reviews) |
| Number of ratings | 1 | **13** |
| Positive reviews | **100.0% of reviews** | 71.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 33 MB | 38 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Greg Newman](https://appshunter.io/developer/1536428997) | [The 5 Gyres Institute](https://appshunter.io/developer/1679667267) |

## What reviewers say

### Leave No Trace Citizen Science

[App page](https://appshunter.io/ios/app/leave-no-trace-citizen-science/id1536428995)

Empower volunteers to monitor outdoor resource conditions over time. This citizen science application supports the mission of protecting natural spaces through responsible enjoyment and education.

**Highlights:** Citizen science data collection, Resource condition monitoring, Outdoor ethics education, Inspires responsible enjoyment, Volunteer empowerment

**Features:** macOS Compatibility

**In-app purchases:** none


### TrashBlitz

[App page](https://appshunter.io/ios/app/trashblitz/id6447145347)

This app allows users to log and track the trash they collect from various locations, including national parks, neighborhoods, and cities. It helps users contribute to environmental cleanup efforts by documenting their impact.

**Highlights:** Track trash pickup, Log environmental cleanup efforts, Document trash collection, Support National Park cleanups, Community cleanup tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is Leave No Trace Citizen Science free?

Leave No Trace Citizen Science is free to download, with no in-app purchases.

### Is TrashBlitz free?

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

### Which has better reviews, Leave No Trace Citizen Science or TrashBlitz?

Leave No Trace Citizen Science is rated higher. Leave No Trace Citizen Science averages 5.0 out of 5 from 1 ratings, while TrashBlitz averages 4.5 from 13 ratings.

### Do Leave No Trace Citizen Science or TrashBlitz have ads?

Neither Leave No Trace Citizen Science nor TrashBlitz shows ads.

### Which is updated more often, Leave No Trace Citizen Science or TrashBlitz?

Leave No Trace Citizen Science ships an update every 6 weeks, and TrashBlitz every 5 weeks. Most recently, Leave No Trace Citizen Science was updated on October 24, 2026 and TrashBlitz on October 25, 2026.

---

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