# Marine Debris Tracker vs Qarib Athan

The clearest difference is in-app purchases: Marine Debris Tracker at none against Qarib Athan's 1. Marine Debris Tracker also leads on ads (none vs shown). Qarib Athan's advantage is update cadence (daily vs every 2 months). On price, rating, ratings volume and device support there is nothing between them.

Both are free to download. Qarib Athan sells 1 one-off in-app purchase. Marine Debris Tracker asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Marine Debris Tracker against 5.0 for Qarib Athan. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Marine Debris Tracker ships an update every 2 months, Qarib Athan daily. The most recent releases landed on October 23, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Marine Debris Tracker | Qarib Athan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/marine-debris-tracker/id432758761/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/qarib-athan/id6788923923/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 38.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Daily** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 29 MB | 43 MB |
| Requires iOS | **12.4** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kyle Johnsen](https://appshunter.io/developer/1021572657) | [Ayaz Bhaiyat](https://appshunter.io/developer/6788923925) |

## 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


### Qarib Athan

[App page](https://appshunter.io/ios/app/qarib-athan/id6788923923)

This app provides accurate prayer times and a gentle call to prayer. It features a private prayer tracker, a Qibla compass, and a special mode for children. All data is processed locally for enhanced privacy.

**Highlights:** Accurate prayer times, Gentle adhan notifications, Qibla compass, Private prayer tracker, Kids mode, Local data processing

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Qarib Athan | $4.99 | one-time |


## Frequently asked questions

### Is Marine Debris Tracker free?

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

### Is Qarib Athan free?

Qarib Athan is free to download, with in-app purchases available.

### Which has better reviews, Marine Debris Tracker or Qarib Athan?

Marine Debris Tracker and Qarib Athan are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Marine Debris Tracker or Qarib Athan have ads?

Qarib Athan shows ads; Marine Debris Tracker does not.

### Which is updated more often, Marine Debris Tracker or Qarib Athan?

Marine Debris Tracker ships an update every 2 months, and Qarib Athan daily. Most recently, Marine Debris Tracker was updated on October 23, 2026 and Qarib Athan on October 10, 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.*