You can use my SQL spreadsheet app: https://superintendent.app I had a similar problem at work where I needed to do some formula on a 5 GB CSV file. Excel can't handle more than 1M rows. Database is too clunky. Eventually I built a GUI wrapper on SQLite, and it grew into Superintendent.app. - Source: Hacker News / about 7 hours ago

Desktop first made me think of Superintendant[0] which I’ve enjoyed using 0: https://superintendent.app/. - Source: Hacker News / 10 months ago

Project 3: Electron with typescripts. 15 paying users. Source: 11 months ago

That is exactly https://superintendent.app (disclaimer: I'm the creator). - Source: Hacker News / about 1 year ago

Well, shameless plug. https://superintendent.app (paid with free trial) enables you to load a bunch of CSVs and write SQL on those CSV files. It's a much faster to work with if you know SQL well. It can also handle millions of rows easily (e.g. Loading 1GB CSV file takes 10s on Macbook Pro). I initially built it because I had to identify the mismatched transactions between 2 giant CSVs using "full outer join". - Source: Hacker News / over 1 year ago

You could try https://slicingpie.com/, but in practice I found it burdensome. - Source: Hacker News / 6 months ago

Since we were new to one another, we used the Slicing Pie methodology and monitored one another for progress and reasonableness in their reporting of time spent. Once we realized that we were both consistently committed to the project, we did a static split of equity and were on our way. Source: 12 months ago

Take a look at slicingpie.com as others have suggested. Source: almost 1 year ago

- ABSOLUTELY do vesting with one year cliff as others mentioned. Do NOT commit to 49% of the get-go just in case he has a change of heart in a few months... An alternative option is the Slicing Pie approach: https://slicingpie.com/ . Slicing pie is more complicated however it is fairer and will allow you to add more people. Source: about 1 year ago

The slicing pie model might work (https://slicingpie.com/) for you depending on how far you are along. I am using this for a rev share project and we all feel it covered things pretty well. Source: about 1 year ago