Stamp Identifier Value Checker vs Trials Explorer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stamp Identifier Value Checker
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Stamps Identifier uses advanced AI to recognize any stamp from a photo, find its catalog information, estimate market value, and help you build a digital collection with ease. Identify Any Stamp in Seconds • Snap a photo to instantly recognize your stamp • Get country, year, catalog numbers, and detailed descriptions • Works with classic, modern, rare, and foreign stamps Check Real Market Value • See estimated value and rarity score • Compare with real-time eBay listings Build Your Digital Collection • Save your stamps to a beautifully organized library • Track the total estimated value of your collection For Beginners and Professional Philatelists Whether you're just starting your collection or managing thousands of stamps, Stamps Identifier helps you stay organized, informed, and inspired. Features • AI-powered stamp recognition • Catalog numbers & detailed info • Rarity and value estimation • Listings integration • Personal digital collection • Unlimited scans with premium Start building your collection today. Scan your first stamp and uncover its history and true worth. Privacy Policy: https://mrzv.app/privacy/ Terms of Use: https://mrzv.app/terms/
Trials Explorer
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Trials Explorer (TE) is a lightweight clinical trial explorer built for fast, structured discovery of studies from ClinicalTrials.gov (v2 API), with PubMed publication linking when available. Use TE to quickly narrow down studies by what matters to you—then keep track of what you found. Key features • Powerful search & filtering: study type, status, date ranges, country, enrollment thresholds, and study design parameters. • Clean study details view: key fields presented in a readable, decision-friendly layout. • Favorites: save studies locally for quick return. • Publications: see related PubMed results when available. • Export: generate shareable outputs (CSV/PDF) for offline review and collaboration. • External links: jump to the official record on ClinicalTrials.gov. Data sources • ClinicalTrials.gov (official public records via API) • PubMed (publication metadata via API) Important TE is provided for informational and research purposes only and does not provide medical advice. Always consult qualified healthcare professionals for medical decisions. Privacy TE does not require an account. Favorites and app settings are stored locally on your device. The app does not sell personal data.
Screenshots
Verdict
The clearest difference is in-app purchases: Trials Explorer at none against Stamp Identifier Value Checker's 2. Stamp Identifier Value Checker's advantage is iOS requirement (16.6 vs 26.2). On price, ads and device support 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. Stamp Identifier Value Checker sells 2 in-app purchases, starting at $5.99 per 7 days. Trials Explorer asks for nothing beyond the download.
| Parameter | Stamp Identifier Value Checker | Trials Explorer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone | iPhone |
| Requires iOS | 16.6 — better | 26.2 |
| Further details — not scored | ||
| Size | 22 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Aliaksei Marozau | MICHAL KOWALSKI |
In-app purchases
Stamp Identifier Value Checker
- Stamp Identifier - Weekly Plan3 Days trial$5.997 Days
- Stamp Identifier - Annual Plan$29.991 Year
Trials Explorer
No in-app purchases





