OpenLitterMap vs Yellowdig
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OpenLitterMap
Contribute to a global database of litter and plastic pollution by taking photos and tagging them. The interactive map visualizes pollution data, allowing users to create custom tags and see live updates. Participate in a worldwide competition to collect the most data.
- Interactive global litter map
- Photo tagging of pollution
- Customizable tag creation
- Live map updates
- Open source data
- Country-based data collection competition
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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.
Yellowdig
Engage in vibrant community discussions and share content seamlessly. This app provides real-time notifications and flexible content sharing for learners, facilitators, and administrators. Experience meaningful engagement on the go.
- Vibrant conversations
- Real-time notifications
- Flexible content sharing
- Seamless community interactions
- Mobile engagement
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Discover a new way to stay connected and engaged with Yellowdig Conversations! Perfect for learners, facilitators, and administrators, this app lets you dive into vibrant conversations, receive real-time notifications, and share content from anywhere. Built to offer seamless community interactions and flexible content sharing on mobile, Yellowdig Conversations brings powerful, meaningful engagement to your fingertips.
Screenshots
Verdict
The clearest difference is review sentiment: OpenLitterMap at 83% against Yellowdig's 26%. OpenLitterMap also leads on rating (3.6 vs 2.7). Yellowdig's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
OpenLitterMap holds the better App Store score, 3.6 against 2.7. Both are backed by a comparable volume of ratings — 9 and 34 respectively. Written reviews point the same way: 83% of OpenLitterMap's written reviews are positive against 26% of Yellowdig's.
OpenLitterMap ships an update every 3 weeks, Yellowdig every 2 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.
| Parameter | OpenLitterMap | Yellowdig |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (9 ratings) — better | 2.7 (34 ratings) |
| Positive reviews | 83.3% of reviews — better | 26.3% of reviews |
| Number of ratings | 9 | 34 — better |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 47 MB | 82 MB |
| Age rating | 12+ | 17+ |
| Developer | Sean Lynch | Yellowdig |
Customer experience
OpenLitterMap
Yellowdig
In-app purchases
OpenLitterMap
No in-app purchases
Yellowdig
No in-app purchases
Questions
Is OpenLitterMap free?
Is Yellowdig free?
Which has better reviews, OpenLitterMap or Yellowdig?
Do OpenLitterMap or Yellowdig have ads?
Which is updated more often, OpenLitterMap or Yellowdig?
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