# Trace vs Mark

The clearest difference is review sentiment: Mark at 100% against Trace's 50%. Mark also leads on in-app purchases (none vs 5) and rating (5.0 vs 4.6). Trace's advantage is update cadence (daily vs every 3 weeks) and ratings volume (28 vs 8). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Trace sells 5 in-app purchases, starting at $4.99 per 7 days. Mark asks for nothing beyond the download.

Mark holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 28 and 8 respectively. Written reviews point the same way: 50% of Trace's written reviews are positive against 100% of Mark's.

Trace ships an update daily, Mark every 3 weeks. The most recent releases landed on October 6, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Trace | Mark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (28 ratings)](https://appshunter.io/ios/app/trace-microplastics/id6740707486/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/mark-wellness-assistant/id6743532938/reviews)** |
| Number of ratings | **28** | 8 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Daily** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 84 MB | 150 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Control. Alt. Delete. LLC](https://appshunter.io/developer/1762687184) | [Mark Wealth](https://appshunter.io/developer/1803364067) |

## What reviewers say

### Trace

[App page](https://appshunter.io/ios/app/trace-microplastics/id6740707486)

Understand your exposure to microplastics with a personalized assessment and science-backed recommendations. Learn about sources, track your progress, and make informed choices for a healthier life and a cleaner environment.

**Highlights:** Personalized microplastic exposure score, Customized reduction recommendations, Local tap water quality reports, Progress tracking over time, Educational content on microplastics, Actionable insights for daily life

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| premium weekly | $4.99 | per 7 days |
| premium weekly with trial | $4.99 | per 7 days |
| Subscription to Trace | $9.99 | per year |
| Trace Premium Yearly | $29.99 | per year |
| premium yearly | $29.99 | per year |


### Mark

[App page](https://appshunter.io/ios/app/mark-wellness-assistant/id6743532938)

This app uses AI and scientific data to create personalized wellness plans, including vitamin recommendations and lifestyle tips. Track your progress with clear dashboards and receive daily coaching to improve sleep, energy, and focus.

**Highlights:** AI health score & insights, Custom supplement plans, Progress tracking visuals, Daily wellness nudges, Auto-delivery of supplements

**In-app purchases:** none


## Frequently asked questions

### Is Trace free?

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

### Is Mark free?

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

### Which has better reviews, Trace or Mark?

Mark is rated higher. Trace averages 4.6 out of 5 from 28 ratings, while Mark averages 5.0 from 8 ratings.

### Do Trace or Mark have ads?

Both Trace and Mark show ads.

### Which is updated more often, Trace or Mark?

Trace ships an update daily, and Mark every 3 weeks. Most recently, Trace was updated on October 6, 2026 and Mark on September 29, 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.*