App idea · Marketplace

Buy & sell marketplace app: features, cost and timeline.

A buy and sell marketplace app lets people list items with photos, find what they want nearby, chat with sellers and arrange the deal — with moderation to keep the community safe.

MVP from $1,200
7–10 weeks
7 core features
In short

What a buy & sell marketplace app costs.

With Kurchu, a first release with 7 core features is estimated at $1,200–$3,100 for iOS and Android from one codebase with a ready-made design. The full product, adding reviews & ratings, online payments, maps & location, analytics & reports, is estimated at $1,700–$4,350. A fixed price follows a short discovery call.

Who it's for
Classifieds startups, niche marketplaces (fashion, electronics, vehicles) and community platforms.
First release (MVP)
$1,200–$3,100 · 7–10 weeks
Full product
$1,700–$4,350 · 10–14 weeks
Platforms
iOS + Android from one codebase
Design
Ready-made design (custom design ×1.3)
Features

What a buy & sell marketplace app needs.

The first release covers the core job; the rest can follow once real users are on board.

First release (MVP)

  • Sign-up & loginBuyers and sellers manage listings and messages.
    $80–$200
  • Product or service listingsItem listings with price, condition and location.
    $120–$300
  • Search & filtersSearch and filter by category, price and area.
    $80–$200
  • Photo & video uploadsSeveral photos per listing, taken in the app.
    $80–$200
  • In-app chatBuyers and sellers negotiate without sharing numbers.
    $200–$500
  • Push notificationsNew messages and offers on your listings.
    $50–$120
  • Admin dashboard (web)Moderate listings, handle reports and ban bad actors.
    $250–$700

Add later

  • Reviews & ratingsSeller ratings build trust between strangers.
    $60–$150
  • Online paymentsSecure in-app payment for shipped items.
    $120–$300
  • Maps & locationBrowse listings near you on a map.
    $100–$250
  • Analytics & reportsPopular categories and listing performance.
    $120–$300
Plan it to your budget

See it, then fit it to your budget.

Fit to my budget

What can I get for my budget?

Slide to your budget — the plan, price and wireframes adjust instantly.

$2,150
$150$3,350
The first release, sketched

Rough wireframes of the first release — move the budget slider to see what changes.

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Admin dashboard (web)
Running costs

What it really costs in year one

Building is only part of it. Here is everything you would pay in the first twelve months — most of it straight to providers, in your name.

Monthly active users
Maintenance after launch
Estimated first-year cost of the app
CostEstimateHow often
Building the app$1,200 – $3,100one-off
Apple Developer Program$99per year
Google Play registration$25one-time
Hosting & backend$0 – $10per month
Real-time chat service$2 – $6per month
Photo & file storage$1 – $4per month
Running cost after launch$3 – $20per month
Total in year one$1,360 – $3,464build + 12 months

Store fees are Apple's and Google's published prices. Hosting and services are typical ranges and depend on real usage; every account is opened in your name, so you only ever pay providers directly.

Price by platform

How platform choice changes the price.

Ready-made design. A custom UI/UX design multiplies each figure by 1.3.

Buy & sell marketplace app estimated cost by platform
PlatformFirst release (MVP)Full product
iOS + Android (one codebase)$1,200–$3,100 · 7–10 weeks$1,700–$4,350 · 10–14 weeks
iOS + Android (native)$1,750–$4,450 · 10–14 weeks$2,450–$6,250 · 13–19 weeks
One platform (iOS or Android)$960–$2,450 · 6–9 weeks$1,350–$3,450 · 9–13 weeks
Advice

Making a buy & sell marketplace app succeed.

How to stand out

  • Make listing an item take under a minute from photo to post.
  • Verify sellers with a phone check and badge.
  • Suggest a fair price from similar listings.

Launch tips

  • Seed listings in one niche and one city before going broad.
  • Moderate quickly in the early weeks — trust is the product.
  • Encourage sellers to share their listings on social media.

We'd ask you

  • Will buyers and sellers meet in person, or will items be shipped?
  • Is it one category or a general marketplace?
FAQ · Buy & sell marketplace app

Questions, answered.

Something we haven't covered? Write to info@kurchu.com — a senior person replies within one working day. Or for a quick answer.

With Kurchu, a first release with 7 core features is estimated at $1,200–$3,100 for iOS and Android from one codebase with a ready-made design. The full product, adding reviews & ratings, online payments, maps & location, analytics & reports, is estimated at $1,700–$4,350. A fixed price follows a short discovery call.

The first release takes about 7–10 weeks from discovery to store launch; the full product about 10–14 weeks. Building natively for iOS and Android, or with a custom design, adds time — the price table on this page shows the difference.

With layers: phone-verified accounts, in-app chat that keeps numbers private, reporting tools, ratings and fast moderation from the admin dashboard. In-app payment with buyer protection can follow once volumes justify it.

Many marketplaces launch with chat and meet-in-person deals, then add in-app payments once trust and volume grow. It keeps the first version cheaper and faster to launch.

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