Comparison

PolyBuys vs Devils Marketplace

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PolyBuys

A secure student marketplace exclusively for Cal Poly, San Luis Obispo. Verified users can easily buy and sell items like textbooks, furniture, and electronics directly within the app. Enjoy a safe, campus-focused trading experience with direct messaging and saved listings.

Highlights
  • Verified Cal Poly student community
  • Fast listing creation
  • Direct in-app messaging
  • Save favorite listings
  • Report and block suspicious content
  • Campus-exclusive trading
Features
Read full description

PolyBuys is the student marketplace built for Cal Poly, San Luis Obispo. Every user is verified with a Cal Poly email, so you always know you're dealing with a real student on campus. Buy and sell textbooks, event tickets, dorm furniture, electronics, clothing, and anything else students need. Browse listings, message sellers directly, and close deals — all within a single app designed around how students actually trade. What makes PolyBuys different: • Verified students only - sign in with your Cal Poly email to join a trusted, campus-only community • Built for speed - post a listing with photos, set your price, and publish in under a minute • Direct messaging - chat with buyers and sellers without sharing your phone number or social media • Save listings - bookmark items you're interested in and come back to them later • Report and block - flag suspicious content and keep the marketplace safe for everyone No ads. No processing fees. No strangers from the internet. Just Mustangs buying and selling to each other. Built by Cal Poly students, for Cal Poly students.

About

Devils Marketplace

Features
Read full description

Devils Marketplace is a student-focused platform to buy, sell, and connect within your community. • Browse items from nearby students • Post listings in seconds • Chat directly with buyers and sellers • Find great deals on furniture, electronics, and more Built for simplicity, safety, and convenience.

Screenshots

PolyBuys4 screens
Devils Marketplace3 screens

Verdict

The call

The clearest difference is ads: PolyBuys at none against Devils Marketplace's shown. On price, in-app purchases, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 8 level
PolyBuys versus Devils Marketplace: the parameters behind the verdict, then further details
ParameterPolyBuysDevils Marketplace
PriceFreeFree
Rating5.0 (7 ratings) — better—
Number of ratings7 — better—
Update frequencyDaily—
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.114.0 — better
Further details — not scored
Size37 MB12 MB
Age rating17+17+
DeveloperTaylor LabsWilliam Pena

In-app purchases

None

PolyBuys

No in-app purchases

None

Devils Marketplace

No in-app purchases

Questions

Is PolyBuys free?
PolyBuys is free to download, with no in-app purchases.
Is Devils Marketplace free?
Devils Marketplace is free to download, with no in-app purchases.
Do PolyBuys or Devils Marketplace have ads?
Devils Marketplace shows ads; PolyBuys does not.

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