Donum SummerBuild '26 — By Donum

Stop Planning.
Start Shipping.

7 days. Solo. One real product. The most honest startup challenge for builders who are done making decks.

Join the Challenge →
7
Days to Ship
₹500
Entry Fee
₹10k
Fixed Prize Pool
Solo
Only Format
The Problem

You have ideas.
They all die the same way.

→
The Fix

Deadlines don't lie. SummerBuild gives you one that matters.

A public commitment, a real deadline, real money on the line, and a community of builders watching. That's the formula for actually shipping.

Real deadline Public accountability No teams — your idea Real users as goal
The Challenge

Simple rules.
Brutal execution.

Start building →
01
🎯

One Goal

Get 10 paying users or 100 real users in 7 days. No exceptions, no extensions.

02
🔨

Build Solo

No teams. This is entirely you — your idea, your execution, your product.

03
🚀

Ship Live

Your product must be publicly accessible and usable by day 7. No slides, no prototypes.

04
📊

Show Traction

Users, revenue, sign-ups — real numbers. Screenshots and analytics required for judging.

05
🗳️

Demo Day

Present your product to the jury and public on day 8. 3 minutes. Make it count.

06
🏆

Win or Learn

Either you win prizes, or you ship something real. Both outcomes are better than doing nothing.

Timeline

April 2026 — The window is fixed. The clock starts Day 1.

Registration opens now. Spots are limited. Once you're in, you get access to the builder community, resources, and the official start date.

7
Days to build
Prize Pool

Win cash.
Keep your product.

2nd Place
🥈
₹3,000
  • Builder certificate
  • Community recognition
  • Keep your product
🏆 Champion
👑
₹6,000
  • Full prize money
  • Featured by Donum
  • Builder spotlight
  • Priority mentorship
3rd Place
🥉
₹1,000
  • Builder certificate
  • Community recognition
  • Keep your product
Prize pool is fixed at ₹10,000. Committed. Guaranteed. Waiting for you to claim it.
Filling up
Judging

Winners earn it.
No politics.

Traction
Real users, paying customers, growth metrics
50%
Jury Score
Product quality, vision, execution
30%
Public Vote
Community picks their favourite builder
20%
Traction Weight50%
Jury Score30%
Public Vote20%

Why you can trust this process

⚖️ Traction is objective — numbers don't lie. Half the score is pure proof.
👁️ All submissions are public. Community accountability keeps judging honest.
📋 Jury criteria published before the challenge starts — no moving goalposts.
🔒 Prize pool is fixed at ₹10,000 — fully committed before Day 1. No surprises, no conditions.
What You Gain

Beyond the prize.
Real outcomes.

🏗️
A live product
Something real, online, with actual users. Not a side project — a product you shipped.
📈
Traction proof
10 paying or 100 real users on your resume. Beats any internship on credibility.
🔥
Momentum
7 days of pure building rewires how you approach every project after this.
🧠
Founder clarity
You'll know if you love building products. Most people never find out. You will.
Data Refreshed Daily
8
Builders Joined
—
Days Left to Register
Competition Starts April 20, 2026

Serious builders
don't hesitate.

The clock starts April 20. Spots are capped. ₹500 now or you're watching from the sidelines while others ship.


Lock In My Spot →
--
Days
--
Hours
--
Mins
--
Secs
For serious builders only

You've been waiting
long enough.

Stop planning. Stop "learning first." Stop waiting for the right time.
7 days. ₹500. One real product. Let's go.

Join SummerBuild '26 — ₹500
One-time entry fee. Solo only. Limited spots remaining.
Donum A Donum Initiative