Here are two successful examples of airdrop:

Rebellious (REBL): https://bitcointalk.org/index.php?topic=2370176.0
Project Hydro (HYDRO): https://bitcointalk.org/index.php?topic=2778123.0

They have built a strong community through airdrop. A good community is very important in the crypto world. They will help promote the coin and vote to get listed on some exchanges for free.

Best wishes to you guys!

If you'd like to plan airdrop, you may raise the bar to prevent multiple accounts from one person. For example, it requires an bitcointalk account and a github account at least three months old, an ETH address with at least three transactions and non-zero balance, and so on.

From your website: "Developer: You will pay for usage." I'd like to ask what's the pricing for developers. Do they need to pay HYDRO? What's the usage of HYDRO? Thanks.