GemFolio vs Specimen Log
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GemFolio
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Collect, analyze, and protect your gems, jewelry, and mineral specimens. GemFolio is a collection manager for gem collectors. Track loose stones, jewelry pieces, and rough minerals in one place: species/type, carat, origin, color, purchase price, certificate details, and photos. Great for mineral show finds. Your data stays on-device only, with one-time purchase and no subscription. -- Features -- - Detailed records for every item Log item name, category (loose/jewelry/rough), species/type, carat, origin, color, purchase price, and certificate status. Save up to 5 photos per item. - Visual gallery management Browse and organize your collection in a clean gallery view, and quickly find the item you want. - Analytics & statistics Track species distribution, carat ranges, price brackets, and origin breakdown with charts. - Share cards Turn favorite items into beautiful cards for social media or messages. - AI recommendations (Premium) AI analyzes your collection trends and suggests what to acquire next. Up to 5 suggestions per month. - CSV export Export text data as CSV for spreadsheets and external tools. - Handover & backup Export your full collection (text + photos) as a .gemfolio file for easy device transfer. - Badges & achievements Earn badges as your collection reaches milestones. - Privacy-first design All data is stored locally on your device. No external server uploads. No crash reporting tools. -- Plans -- Free: Up to 20 items. Standard (one-time purchase): Up to 100 items, analytics, share cards, handover, and CSV export. Premium (one-time purchase): Unlimited items + AI recommendations (5/month), plus all Standard features. One-time purchase. No subscription required. -- Perfect for -- - Collectors who want detailed records for loose stones, jewelry, and rough minerals - Anyone who wants to organize and analyze their collection - Collectors seeking AI suggestions for next purchases Terms of service:https://kili0.github.io/gemfolio-docs/terms_of_service.html Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Specimen Log
Organize your mineral collection with detailed records, photos, and custom tags. Track purchase history, storage locations, and analyze your collection's growth. Ideal for collectors who need a dedicated tool to manage their specimens.
- Record specimen details (name, locality, price, etc.)
- Attach multiple photos per specimen
- Organize with custom tags
- Switch between list and gallery views
- Track specimen storage locations (Pro)
- Analyze collection spending and growth (Pro)
- Create and manage wishlists
- Share specimen details
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Where did you buy that piece? What locality is it from? Which case is it in now? Specimen Log (標本帳) is a mineral collection management app. Record and organize every specimen — photos, locality, purchase source, price, storage location, and more. ------------------ WHAT YOU CAN DO ------------------ ▷ Record your specimens Save mineral name, locality, origin details, size, hardness, crystal system, purchase source, price, purchase date, condition, and free-form notes — all stored per specimen. ▷ Attach photos Add photos from your library or shoot directly in-app. Register multiple photos per specimen and swipe through them on the detail screen. ▷ Organize with tags Create custom tags for color, locality, show name, price range, or storage notes. Filter by multiple tags at once to narrow down exactly what you need. ▷ Switch your view Toggle between list view and gallery view. Browse by photo or scan purchase info and pricing at a glance. ▷ Manage shelves & cases (Pro) Register shelves and cases to track exactly where each specimen lives. No more forgetting which cabinet holds which piece. ▷ Analyze your collection (Pro) View spending by year and by purchase source, plus counts by locality and tag — all in charts. See exactly how your collection has grown over time. ▷ Wishlist for your next show Note the specimens you're hunting for at your next mineral show or shop. Convert wishlist items to full specimen records after purchase. Up to 10 items free; unlimited with Pro. ▷ Share your specimens Create a share card combining the photo and details from any specimen — easy to post on social media or share with fellow collectors. ▷ Export & import your data Export as CSV (data only) or as a ZIP with photos — free for everyone. You can also import files previously exported from this app to restore your collection. Useful for valuations, insurance records, selling reference, or moving to a new device. ------------------ WHO IT'S FOR ------------------ • Collectors who pick up multiple pieces at mineral shows (Tucson, Denver, local fairs) • Anyone who has lost locality or source info when a label fell off • Collectors tracking things in spreadsheets who want something purpose-built • Anyone whose collection has grown too large to manage mentally • Collectors who want photos, purchase history, and storage location in one place • Anyone building a wishlist before the next show ------------------ NOT AN AI IDENTIFIER ------------------ This is not an app that identifies rocks from photos. It is a collection log — a place to record specimens you have purchased or collected, in your own words. Works for rare localities, personally collected pieces, and anything AI would never know. ------------------ YOUR DATA STAYS LOCAL ------------------ All specimen data and photos are stored on your iPhone or iPad. Nothing is sent to external servers. No account registration required. ------------------ PRICING ------------------ • Free: up to 10 specimens, up to 10 wishlist items. Data export & import included • Pro (one-time purchase): unlimited specimens, unlimited wishlist, shelf/case management, collection analysis No subscription. No recurring fees. Ever. ------------------ Developer: Kore Apps Contact: support@kore-apps.com ------------------
Screenshots
Verdict
The clearest difference is iOS requirement: GemFolio at 13.0 against Specimen Log's 15.0. On price, update cadence, ads and in-app purchases 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. GemFolio sells 4 in-app purchases, starting at $0.99 per month and Specimen Log sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
GemFolio ships an update every 10 days, Specimen Log every 6 days. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.
| Parameter | GemFolio | Specimen Log |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 10 days | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 85 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | Toko UEDA | kazuki korenori |
In-app purchases
GemFolio
- GemFolio Supporter$0.991 Month
- GemFolio Premium$1.99
- GemFolio Standard$2.99
- GemFolio Premium$4.99
Specimen Log
- Specimen Log Pro$5.99





