# OpenLitterMap — Join us and share data

> Open source interactive map for logging and visualizing global litter and plastic pollution. (iPhone/iPad app by Sean Lynch.)

- Source: https://appshunter.io/ios/app/openlittermap/id1475982147 (this page in markdown: same URL + `.md`)
- Developer: [Sean Lynch](https://appshunter.io/developer/1475982146)
- Category: Education
- Price: Free
- Rating: 3.56/5 from 9 App Store ratings · 6 written reviews indexed
- Age rating: 12+
- Requires: iOS 15.0 · 47 MB
- Languages: English
- Released: 2019-09-02
- Data updated: 2026-06-20
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/openlittermap/id1475982147/reviews.md

## What is OpenLitterMap?

OpenLitterMap is an open source, interactive, and accessible database of the world's litter and plastic pollution.

Just take a photo and tag it with our app.

Litter is the first application of this real-time data collection platform.

For the last 8+ years we have been crowdsourcing data to help train the OpenLitterAI to help with detection and classification.

You can extend our pre-defined list of tags with your own custom tags. Just type in whatever you want and press enter.

Keep the global map open to see live updates. If you click on a notification, you will be zoomed to the data that was just recorded. Copy the URL to get a link that can send anyone to any photo.

Our code & data is open and accessible. Anyone can download our data for free, and use it for any purpose. This is necessary to bring transparency and democracy to science on pollution.

As you tag litter, you help your country compete at the #LitterWorldCup to see who can collect the most data.

By default, all users are anonymous. However, you can make your name or username appear on the map or leaderboards and compete for a position. You can also add your social media links which will appear on each upload. Like getting upvoted, the more data you upload means the more visibility you will get!

Follow us on social media to keep up to date with all of the latest updates and developments.

## Key features

- Interactive global litter map
- Photo tagging of pollution
- Customizable tag creation
- Live map updates
- Open source data
- Country-based data collection competition

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/openlittermap/id1475982147/reviews.md

### 1/5 — Unable to join a team

*2025-11-09*

I recently downloaded this app for college and every time I tap join a team, the app crashes.

### 5/5 — Awesome app great purpose

*2020-10-04*

I love this idea! So great! Hope this can grow and expand in the future.

### 5/5 — Awesome way to create open data

*2020-04-17, version 2.0.1*

The only app (as far as I’m aware!) that creates open data instead of ones where only certain groups can access it. It’s a really good app especially considering it’s run by a one person team with very limited funding. I hope more people will join Open Litter Map to create open litter map, contribute to Open Science and reduce pollution!

### 5/5 — Be part of the solution

*2019-11-29, version 1.1.4*

Fantastic. Easy to use. Easy to upload. The images are fab and the raw data is open data free for anyone and anybody to use for any purpose. A dream for students, academics and society at large

### 5/5 — Love it!

*2019-09-03*

So easy to use and it’s brilliantly simple. Thank you for developing this. It really IS making a difference!

### 5/5 — Great concept which will help the world

*2019-09-03, version 1.0.5*

Keep up the good work!

## Frequently asked questions about OpenLitterMap

### What is OpenLitterMap?

OpenLitterMap is an open-source, interactive database that allows users to log and visualize global litter and plastic pollution by taking and tagging photos. It aims to make pollution visible and accessible for scientific research and public awareness.

### How does OpenLitterMap help track pollution?

Users can take photos of litter and tag them with specific details. These submissions are added to a global map, creating a visual representation of pollution hotspots and trends. The app also allows for custom tags to categorize pollution types more precisely.

### Can I use OpenLitterMap offline?

The provided data does not specify offline functionality. However, the app's core feature of contributing to a live global map suggests an active internet connection is likely required for real-time updates and submissions.

### Is OpenLitterMap free to use?

Yes, OpenLitterMap is available for free. The app's data is also open and accessible for download and use by anyone for any purpose, promoting transparency in pollution science.

### Does OpenLitterMap have ads?

Yes, OpenLitterMap contains advertisements. As a free application, it utilizes ads to support its development and operation.

### What age is OpenLitterMap suitable for?

OpenLitterMap is rated for users aged 12 and older. This age rating is typical for educational applications that may involve data collection and environmental awareness topics.

### How often is OpenLitterMap updated?

The latest version of OpenLitterMap is 7.1.1, released on March 25, 2026. While this indicates a recent update, the frequency of updates is not explicitly detailed in the provided information.

### How can I contribute to OpenLitterMap?

You can contribute by downloading the app, taking photos of litter, and tagging them with relevant information. Your contributions help build the global pollution database and allow your country to compete in the #LitterWorldCup.

## Version history (last 5 releases)

### 7.11.1 — 2026-06-15

Native photo selection.
Improved tagging.
Improved onboarding tutorial.
Improved layout.
Improved app reliability with better crash reporting

### 7.7.5 — 2026-04-11

OpenLitterMap has been transformed by AI
- new tagging system
- critical GPS bugs fixed
- legacy code removed
- several steps removed
- significantly improved designs & experience
- new onboarding journey for new users
- new QuickTags for faster tagging
- performance improvements
- improved stat counters
- made TagDrawer swipeable
- updated footer
- bug fixes & improvements

### 7.1.1 — 2026-03-25

OpenLitterMap has been transformed by AI
- new tagging system
- critical GPS bugs fixed
- legacy code removed
- latest react & react native versions
- new important baseline established

### 6.2.0 — 2024-10-08

- You can now view and search through all your uploads.
- On each of your uploads you can generate a unique link that will send anyone to a specific observation on the map.
- On each of your uploads can open each photo on the map.
- Added back in-app notification when there is an app update
- Bug fixes & improvements

### 6.1.0 — 2024-09-01

- Added ability to drag across images to de/select them
- Temporarily removed new app update notification

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## More apps by Sean Lynch

- [Tranquilarm](https://appshunter.io/ios/app/tranquilarm/id6471901892)

All apps by Sean Lynch: https://appshunter.io/developer/1475982146

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-20.*