# OpenLitterMap vs Yellowdig

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.

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.

## The numbers

| Metric | OpenLitterMap | Yellowdig |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (9 ratings)](https://appshunter.io/ios/app/openlittermap/id1475982147/reviews)** | [2.7 (34 ratings)](https://appshunter.io/ios/app/yellowdig/id6736774264/reviews) |
| Number of ratings | 9 | **34** |
| Positive reviews | **83.3% of reviews** | 26.3% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 47 MB | 82 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [Sean Lynch](https://appshunter.io/developer/1475982146) | [Yellowdig](https://appshunter.io/developer/986830084) |

## What reviewers say

### OpenLitterMap

[App page](https://appshunter.io/ios/app/openlittermap/id1475982147)

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.

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

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

**In-app purchases:** none


### Yellowdig

[App page](https://appshunter.io/ios/app/yellowdig/id6736774264)

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.

**Highlights:** Vibrant conversations, Real-time notifications, Flexible content sharing, Seamless community interactions, Mobile engagement

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

**In-app purchases:** none


## Frequently asked questions

### Is OpenLitterMap free?

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

### Is Yellowdig free?

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

### Which has better reviews, OpenLitterMap or Yellowdig?

OpenLitterMap is rated higher. OpenLitterMap averages 3.6 out of 5 from 9 ratings, while Yellowdig averages 2.7 from 34 ratings.

### Do OpenLitterMap or Yellowdig have ads?

OpenLitterMap shows ads; Yellowdig does not.

### Which is updated more often, OpenLitterMap or Yellowdig?

OpenLitterMap ships an update every 3 weeks, and Yellowdig every 2 weeks. Most recently, OpenLitterMap was updated on November 3, 2026 and Yellowdig on November 4, 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.*