Olyns vs SlugMarket
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Olyns
This app facilitates recycling by connecting users to a network of bottle boxes. Users can find nearby recycling locations, deposit beverage containers, and earn cash rewards redeemable via PayPal. It aims to make recycling convenient and rewarding while contributing to environmental sustainability.
- Find nearby recycling locations
- Deposit beverage containers
- Earn cash rewards
- Save Olyns card to phone wallet
- Touchless check-in via phone
- Cash out via PayPal
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Olyns is Rethinking Recycling. Our growing network of bottle boxes makes it easy and fun to recycle beverage containers for cash. Here’s how it works: 1. Download the Olyns App. 2. Create an account and save an Olyns card to your phone's Wallet. 3. Find the nearest Olyns Cube on our map. 4. Hold your phone below the Recycle Ring on the Olyns Cube for touchless check in. 5. Deposit your empty CRV containers into the Olyns Cube. 6. Earn cash for every eligible container. 7. Cash Out your balance anytime through PayPal. 8. Celebrate - you just did your part to help the planet
SlugMarket
A verified marketplace for UC Santa Cruz students to buy, sell, and discover items and housing. Connect with other students through in-app messaging and manage your listings easily. Offers a safer, more focused experience than general marketplaces.
- Browse student listings
- Create and manage listings
- In-app messaging
- Explore housing and subleases
- Verified student profiles
- Notifications for messages and listings
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SlugMarket is a verified UCSC student marketplace built for the Santa Cruz campus community. Buy, sell, and discover student listings in one place. Students can post items, browse campus listings, message sellers, manage their own posts, and explore housing and sublease opportunities. What you can do with SlugMarket: • Browse student listings near UCSC • Create listings with photos, price, condition, and location • Message sellers directly in the app • Save time with a campus-focused marketplace • Mark listings as sold, edit posts, or delete them • Explore housing and sublease posts • Receive notifications for messages and new listings • Use verified student profiles for a safer experience SlugMarket is designed to be faster than group chats, more focused than Facebook Marketplace, and more trusted than random public listings. Built for UCSC students.
Screenshots
Verdict
The clearest difference is rating: Olyns at 3.5 against SlugMarket's 3.0. Olyns also leads on ratings volume (465 vs 2) and iOS requirement (12.4 vs 17.0). SlugMarket's advantage is update cadence (every 2 days vs every 5 weeks). 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.
Olyns holds the better App Store score, 3.5 against 3.0. That said, the two scores are not equally well evidenced: Olyns has 465 ratings behind it against 2, so its average is the more settled of the two.
Olyns ships an update every 5 weeks, SlugMarket every 2 days. Both last shipped on October 24, 2026.
| Parameter | Olyns | SlugMarket |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (465 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 20.6% of reviews | — |
| Number of ratings | 465 — better | 2 |
| Update frequency | Every 5 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.4 — better | 17.0 |
| Further details — not scored | ||
| Size | 37 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Olyns Inc | Mukund Ojha |
Customer experience
Olyns
SlugMarket
Bugs and requests
Olyns
Reported bugs
3 issues- Login/account verification issues
- Inconsistent container recognition
- Machines freezing/malfunctioning
Requested features
4 requests- Ability to favorite/track specific machine locations
- Real-time machine status updates
- Increase glass bottle capacity
- Expand operating hours
SlugMarket
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Olyns
No in-app purchases
SlugMarket
No in-app purchases
