CanopyApp vs Gem
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CanopyApp
This application helps analyze forest canopies using your phone's gyroscope for accurate, ground-level readings. Select leaf colors with simple touches to gather canopy data in any climate or season, making it a handy tool for densiometer and canopy analysis.
- Phone gyroscope for accurate readings
- Ground-level picture leveling
- Simple touch-based color selection
- Climate and season adaptable
- Densiometer functionality
Read full descriptionHide full description
Analyze the forest's canopy with ease using technology you use every day -- your phone! Using your phone's gyroscope, each picture taken will be level with the ground and ensure accurate readings. You select the leaf colors with simple touches, so canopy data can be taken in any climate, any season! If you're looking for a densiometer or canopy analysis tool, this is a fantastic app for you!
Gem
Discover secondhand and vintage clothing efficiently across numerous online stores and marketplaces. Find specific items or browse by decade and brand, with options to save favorites and receive notifications. Purchase directly from the seller's website without additional fees.
- Unified search for resale sites
- Image search functionality
- Filter by price, size, location, decade
- Browse by decade, brand, gender
- Save favorite items
- Push/email notifications
- Direct purchase from seller
Read full descriptionHide full description
The most efficient app for finding secondhand clothing. • One fast search for all resale sites and stores • No additional fees • Keep track of your searches with push/email notifications • Search with image • Filter by price, size, location, decade, gender • Browse by decade, brand, gender • Save favorites • Buy the item on the store website — FEATURED IN “Fashion writers, vintage collectors and costume designers all use this app” – The New York Times “You can find vintage or secondhand alternatives to items you’d normally buy new” – Vogue US “Anything I consider getting, I first search it on Gem” – New York Magazine “What We Love: Gem searches for items from independent stores and resale platforms—drawing from over 150 million listings across the internet.” – App Store US — Gem brings together thousands of online vintage & secondhand stores and marketplaces into one simple search. Once you find the item you’re looking for, you can buy it directly from the seller website, without extra cost. Gem is open to all online vintage & secondhand clothing stores. Contact us if you would like your store to be included. — Screenshots product image credits: Twofold_b, Community Thrift and Vintage, SSLOPPYSSECONDS, BrassCactusVintageCo, CannedHamVintage, Halcyon West, ButterworthsVintage, James Veloria, Wayward Collection, Recess LA, CALIVINTAGEUSA, BrooklynThread, cottonmouth, Fair Season, Na Nin, SouthwestVintage, MiscELENAeous, Libbysmomsvintage
Screenshots
Verdict
The clearest difference is review sentiment: Gem at 97% against CanopyApp's 33%. Gem also leads on rating (4.9 vs 3.0) and ratings volume (983 vs 8). CanopyApp's advantage is update cadence (fortnightly vs every 2 months) and iOS requirement (9.0 vs 15.1). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
Gem holds the better App Store score, 4.9 against 3.0. That said, the two scores are not equally well evidenced: Gem has 983 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 33% of CanopyApp's written reviews are positive against 97% of Gem's.
CanopyApp ships an update fortnightly, Gem every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | CanopyApp | Gem |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (8 ratings) | 4.9 (983 ratings) — better |
| Positive reviews | 33.3% of reviews | 96.8% of reviews — better |
| Number of ratings | 8 | 983 — better |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 32 MB | 51 MB |
| Age rating | 4+ | 17+ |
| Developer | University of New Hampshire | Gem Search, LLC |
Customer experience
CanopyApp
Gem
Bugs and requests
CanopyApp
Not enough reviews yet to summarise bugs or requests.
Gem
Reported bugs
2 issues- Inconsistent display of sold items in search results
- Occasional app crashes or freezes
Requested features
4 requests- Add image search functionality
- Expand search filters (e.g. condition, category)
- Improve saved search/item organization
- Include more platforms (e.g. Mercari, The RealReal)
In-app purchases
CanopyApp
No in-app purchases
Gem
No in-app purchases









