So how much is the commission for the traders? Sorry if I missed it but just do a quick look at there is no explicit number (at least on the homepage). Is there a minimum amount of money that investors need to invest before the copy-trade available? If it's the same as eToro (which is around $1000 iirc), I guess this is a no for me too.
To answer your questions, so Etoro and other sites alike charge a fee based on how much is invested or how ofter you trade. For example with etoro they charge a percentage of 2% and other sites similar charge based on the spread (if a spread is usually 0.1 they'd add a day 0.05 as their fee). This means that the Investor doesn't have to pay up front however with taking a % the fees can be a lot higher and with with a spread it could mean cutting into the profits or taking longer to reach limits set by a trader. My thinking to why etoro have a minimum of $1000 and similar platforms have a minimum of around the same marker is to pressure an investor to invest more. To my knowledge they don't have any real competition so you're forced to use their service or not use them at all.
To answer your questions; Traders make their money by charging a fixed monthly fee which can only be adjusted once every 30 days and CopyCat.app take a % from this (55%). The % we take is subject to get lower (35%) as we grow and we can estimate our costs of operations (the biggest being server costs).
The minimum amount of money needed to invest also depends on a number of things. When you copy a Trader, you allocate how much you want to invest with them. From that allocation you then copy the exact amounts in terms of % that the Trader is executing.
Example 1: You have $10 (equivalent in crypto or other fiat) in your account. You allocate 20% of your account to Trader A. Trader A executes a buy order for BTC/EOS with 5% of his/her funds. This means only $0.10 (equivalent in crypto) of your funds will be traded. The exchange you're trading on has a minimum trade amount of $0.10 (equivalent in crypto), your trade get executed.
Example 2: You have $10 (equivalent in crypto or other fiat) in your account. You allocate 20% of your account to Trader A. Trader A executes a but order for BTC/BNB with 1% of his/her funds. This means only $0.02 (equivalent in crypto) of your funds will be traded. The exchange you're trading on has a minimum trade amount of $0.20 (equivalent in crypto), your trade doesn't get executed.
There is no set minimum if all depends on the exchange you're on the the type of Trader you're copying. If you're copying a trader that executes a lot of small trades or copying a lot of traders and your balance is say $10 then the odds of all your trades getting executed are very low. If your copying a hand full of Traders who don't execute a lot of trades and your balance is $10, the odds of your all your trades getting executed are very high.
TLDR;
So how much is the commission for the traders?
Charge a monthly fee
Is there a minimum amount of money that investors need to invest before the copy-trade available?
No