Paperstack
Free paper trading app for practicing stocks & crypto
Hey Indie Hackers 👋
I just shipped Paperstack (https://paperstack.eu) — a free web app to practice stock and crypto trading with virtual cash.
### Why it exists
I wanted to practice trading without risking real money, and without fighting a bloated broker demo. Most paper tools are either too basic (just buy/sell) or buried inside huge platforms.
Paperstack focuses on a simple practice workflow:
ranked setups → optional backtest → paper buy → track P&L / win rate.
### What’s in v1
- Start with 10,000 EUR or USD in paper cash
- Ranked setups for Day Pulse, Short Swing, and Long Term
- Strategy Lab backtests before opening a position
- Personal virtual portfolio (open/closed trades, equity, win rate)
- Invite rewards (extra paper cash only)
- Free to use — no brokerage account needed
### Links
- Product: https://paperstack.eu/
- Stock simulator page: https://paperstack.eu/paper-trading-simulator
- Crypto paper trading: https://paperstack.eu/crypto-paper-trading
- Beginner guide: https://paperstack.eu/how-to-paper-trade
### What I’m looking for
Honest feedback from builders / traders:
1. Is the first-run experience clear enough for a new user?
2. Does the Day Pulse / Short Swing / Long Term split make sense?
3. What would make you come back weekly?
4. Would you ever pay for Pro (more setups / watchlist / advanced), or should this stay free?
Built solo. Happy to share what worked (and what didn’t) on SEO + launch if useful.
5 Comments
Paperstack is designed around the ranked setups as the daily habit — Home shows today’s Best buys by mode (Day Pulse / Short Swing / Long Term), and the intended path is “open the app → review setups → paper-trade a few → track P&L over time.” The simulator/portfolio is the ledger for that, not a separate one-off toy.
In practice I’m still early: small user base, mostly first sessions so far. I don’t have enough returning-user data yet to say “people come back for the rankings every day” vs “they try one paper trade and leave.” That’s exactly what I’m trying to learn by putting it in front of more traders now.
If you try it, the useful test is whether you’d reopen it the next morning for a fresh ranked list — that’s the product bet.