Executive summary
A two-sided marketplace where artists list original works with photos, details and pricing, and buyers place competitive bids in timed auctions or buy at a fixed price. One product, three surfaces: buyer/artist mobile apps, a public website, and an admin console for moderation, commerce and support.
Scope & modules
Feature scope covered under this quotation (see Quotation for the fixed price). Items deferred to a second phase are listed at the end.
Buyer & artist app
- Email/phone OTP + Google & Apple sign-in
- Artist profile & portfolio, guided artwork listing (images, medium, size, year, price)
- Timed auctions — reserve price, minimum increment, live bid updates, countdown, outbid alerts, winner selection
- Browse, search, filter, wishlist and follow artists
- Online payment by the winning bidder, order status tracking
- Push & email notifications
Admin panel
- Artist and user management
- Listing moderation & auction management
- Orders, commission settings and payout tracking
- Category, banner & CMS management
- Dashboard with key marketplace metrics
Website
- Public marketplace: browse and search artworks
- Artwork & artist pages with live bidding
- Login and buyer/artist account dashboard synced with the app
Phase 2 (not in this quote)
- Auto-bid (proxy bidding) and in-app chat
- Reviews & ratings
- Automated escrow, split payouts and courier integration
- Automated KYC and SEO-focused Next.js website
- AR preview, AI recommendations, multi-language
Roadmap
A 16-week build with backend, app, admin and website streams running in parallel.
Discovery, requirements & architecture
Wk 1–2Auction rules, user flows, technical architecture, database schema, sprint plan.
UI/UX design
Wk 2–4Design system and high-fidelity screens for app, admin and website; clickable prototype and sign-off.
Backend foundation
Wk 3–8Auth, users, artworks, media pipeline, search APIs, cloud infrastructure and CI/CD.
Flutter app — iOS & Android
Wk 4–13Onboarding, browse, artist listing flow, artwork detail, orders, wishlist and notifications.
Bidding & payments
Wk 7–11Real-time auction engine, timers, outbid alerts, payment gateway, orders and commission.
Admin panel & website
Wk 9–13Moderation, auctions, orders, CMS, and the public marketplace website.
QA, UAT & launch
Wk 13–16Regression and concurrent-bidding load tests, client UAT, production deployment and App Store / Play Store submission.
A 60-day post-launch bug-fix window follows the 16-week build.
Tech stack
Flutter across mobile, admin and website for maximum code reuse, paired with a modular backend that keeps the real-time bidding path isolated.
Mobile apps
Admin & website
Backend & real-time
Data & storage
Payments & identity
Cloud & DevOps
Quotation
| Component | Amount |
|---|---|
| Mobile app — Flutter (Android + iOS), store release | ₹3,00,000 |
| Backend & APIs — bidding engine, payments, notifications | ₹1,20,000 |
| Admin panel & website | ₹70,000 |
| UI/UX design | ₹50,000 |
| QA, DevOps & launch | ₹60,000 |
| Total (excluding GST) | ₹6,00,000 |
Figures in INR, exclusive of GST. Third-party usage costs are billed separately — see Assumptions & exclusions. The website is built in Flutter Web to fit the budget; if strong Google search ranking matters, a Next.js website can be added in Phase 2.
Payment milestones
Payment schedule against the total quoted fee of ₹6,00,000.
| Milestone | Share | Amount | Trigger |
|---|---|---|---|
| Project kickoff | 50% | ₹3,00,000 | On signing & purchase order |
| Design & backend core | 20% | ₹1,20,000 | Design sign-off and backend core complete (week 8) |
| Beta release | 20% | ₹1,20,000 | App, admin and website beta delivered (week 13) |
| Go-live & handover | 10% | ₹60,000 | Production launch, source code & documentation handover (week 16) |
| Total | 100% | ₹6,00,000 |
Assumptions & exclusions
Included
- Scope as described in this proposal
- Two revision rounds per design milestone
- 60-day post-launch bug-fix window
- Source code & documentation handover
- Standard set-up of listed third-party integrations
Excluded / pass-through
- Apple Developer ($99/yr) & Google Play ($25 one-time) accounts
- Cloud hosting and usage bills (AWS, Razorpay/Stripe, Firebase, SMS/email)
- Legal drafting — T&Cs, privacy policy, seller agreement
- Marketing, ASO, content entry and Phase 2 features
- Timeline assumes client feedback within 3 working days
Next steps
Review & align scope
Walk through this proposal together and confirm the scope.
Sign & kick off
Countersign the proposal and clear the kickoff milestone.
Sprint zero
Kickoff workshop, environment setup, backlog grooming.
Development begins
Sprint cadence starts per the roadmap above.