# Marine Debris Tracker vs ACA Conferences

The clearest difference is update cadence: Marine Debris Tracker at every 2 months against ACA Conferences's every 8 months. Marine Debris Tracker also leads on iOS requirement (12.4 vs 14.1). On price, ads, 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.

Marine Debris Tracker ships an update every 2 months, ACA Conferences every 8 months. The most recent releases landed on October 23, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Marine Debris Tracker | ACA Conferences |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/marine-debris-tracker/id432758761/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 38.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Monetization | Free | — |
| Size | 29 MB | 35 MB |
| Requires iOS | **12.4** | 14.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kyle Johnsen](https://appshunter.io/developer/1021572657) | [Results at Hand Software LLC](https://appshunter.io/developer/669416687) |

## 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


### ACA Conferences

[App page](https://appshunter.io/ios/app/aca-conferences/id6741250934)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Marine Debris Tracker free?

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

### Is ACA Conferences free?

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

### Do Marine Debris Tracker or ACA Conferences have ads?

Neither Marine Debris Tracker nor ACA Conferences shows ads.

### Which is updated more often, Marine Debris Tracker or ACA Conferences?

Marine Debris Tracker ships an update every 2 months, and ACA Conferences every 8 months. Most recently, Marine Debris Tracker was updated on October 23, 2026 and ACA Conferences on October 28, 2026.

---

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