The idea is to pool funds and then get discounts for bulk purchases of tokens in other ICO projects?
Correctly. The group wallet will be credited with the bonus from the ICO project, and its size will be significant, since a group investment allows you to invest a decent amount of money. Once the timer has expired or the maximum threshold of the common wallet will be reached, the smart contract will send the sum on the common wallet to the ICO which will issue the tokens with the relative bonuses.
the user will be credited to the portfolio from which he has invested, the amount of tokens due.
And how does everyone get started? Does everyone have to send funds to you first? That's also very risky.
Do not be afraid for your means - Jointly is the decentralized platform and managed by a smart contract, fixing all the transactions that occur in the system. Smart contract will manage in a completely autonomous way the part of investment in the ICOs and the consequent subdivision and transmission of the token issued, with the bonuses, directly to the investor wallet.
If you want to know the full procedure, we described it on the site:
The user from the main screen of JOINTLY will choose the ICO in which he will invest, then press on the "Invest" button.
He will be shown the address of the common wallet and at this point the user of his wallet will send the ETH figure he wants to invest.
Once the timer has expired or the maximum threshold of the common wallet will be reached, the smart contract will send the sum on the common wallet to the ICO which will issue the tokens with the relative bonuses.
the user will be credited to the portfolio from which he has invested, the amount of tokens due.
As you explain it it is 100% safe to say that the user never gives away control over the funds or private keys? Are you going to do research on the ICO that will be offered on Jointly or is that up to the users themselves?