Good, reliable excel on Android phone. Full functionality not as intuitive as laptop ms version, but solid for straightforward spreadsheet work.
Sheets and Calc are good. Excel still is the industry de facto standard for spreadsheets, and I doubt that will change anytime soon. It's feature rich and I still haven't mastered Pivot Tables, darn it, but you can get simple things done quickly, and complicated things done with a little more effort. All in all, it's one of the best and most recognized industry software titles out there. I don't think you'll go wrong choosing Excel for your spreadsheet application.
I used the desktop version of Excel for many years at different companies, and it greatly helped my productivity. Though the desktop and mobile Excel designs differ in how their tools are accessed, they both offer the same familiar spreadsheet design with its powerful, versatile functions and formatting. Based on my use of the app so far, I am quite pleased!
I haven't used Excel in years. After a little while I intuitively created a chart that can balance tills, calculated a deposit amounts and... long story short, it makes life much easier if you work with numbers. Thank you Microsoft!!!