Trace vs Allergense
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Trace
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.
- 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
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Trace helps you understand and reduce your exposure to harmful microplastics in everyday life. Through our science-backed assessment, you'll learn your personal microplastics risk score and get customized recommendations to minimize your exposure. Key Features: • Personalized Assessment: Answer questions about your diet, home habits, and lifestyle to calculate your unique microplastics exposure score. • Water Quality Reports (Premium Feature): Access detailed information about microplastics and chemicals in your local tap water based on your zip code. • Actionable Insights: Receive practical, easy-to-implement recommendations to reduce your plastic consumption. • Progress Tracking: Monitor your improvement over time as you implement changes. • Educational Content (Premium Feature): Learn about microplastics sources and their impact on health through engaging visuals and facts. Microplastics are tiny plastic particles found in our food, water, and air. The average person ingests about 5 grams of plastic weekly—equivalent to a credit card—and may consume up to 46 pounds of microplastics in their lifetime. These particles can contain harmful chemicals that affect hormones, immunity, and overall health. Trace empowers you to make informed choices about your health by highlighting hidden sources of microplastics in your daily routine and suggesting safer alternatives. Whether it's switching from plastic food containers, choosing better laundry detergents, or improving your water filtration, Trace provides practical steps anyone can take to reduce their microplastic intake. Join thousands of Trace users who are taking control of their health and helping create a cleaner environment for future generations. Download today and start your journey toward a life with fewer microplastics. Note: Some features require a premium subscription to access. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Allergense
This app provides real-time, community-sourced allergen safety information for restaurants. Users can see safety scores based on others with similar allergies, filter by specific allergens, and contribute their own reports to help others dine safely.
- Real-time safety map
- Color-coded restaurant scores
- Filter by specific allergens
- Submit community reports
- Read community reports
- Search worldwide locations
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Allergense is the community-powered allergen safety app that tells you whether someone with your exact allergy ate safely at a restaurant recently. 32 million Americans live with food allergies. Every restaurant meal is a gamble. Allergense changes that with real-time crowdsourced safety scores from people who share your allergies. Features: - Real-time safety map with color-coded restaurant scores - Filter by your specific allergens - Submit and read community reports - Search any city, zip code, or restaurant name worldwide
Screenshots
Verdict
The clearest difference is in-app purchases: Allergense at none against Trace's 5. Allergense also leads on ads (none vs shown) and rating (5.0 vs 4.6). Trace's advantage is ratings volume (28 vs 1) and device support (3 vs 1). On price and update cadence 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. Trace sells 5 in-app purchases, starting at $4.99 per 7 days. Allergense asks for nothing beyond the download.
Allergense holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Trace has 28 ratings behind it against 1, so its average is the more settled of the two.
Trace ships an update daily, Allergense every 2 days. The most recent releases landed on October 6, 2026 and September 15, 2026 respectively.
| Parameter | Trace | Allergense |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (28 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 28 — better | 1 |
| Update frequency | Daily — better | Every 2 days |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 84 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Control. Alt. Delete. LLC | RAVI KOLTUR |
Customer experience
Trace
Allergense
In-app purchases
Trace
- premium weekly$4.997 Days
- premium weekly with trial3 Days trial$4.997 Days
- Subscription to Trace$9.991 Year
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- Trace Premium Yearly3 Days trial$29.991 Year
- premium yearly$29.991 Year
Allergense
No in-app purchases









