I use Grist for this purpose. Check out this template, this may be just what you want and using widgets it is quite easy to create a form to append to the expenses database (just like here). Grist works really nice on mobile too and is also pretty easy to self-host if you need an extra degree of privacy, but you can use the official instance as well.
If you want I can send you my Grist template that does pretty much all things you want.
Also keep it mind that, while Grist looks like a spreadsheet, there are some key differences between it and a typical spreadsheet (see here). You may need to spend some time with the documentation (which is really good btw, and they have video tutorials as well), but in my opinion it's really worth it.
Cryptpad is probably the best in this scenario. However, it does not have a mobile app if you need that.
Framaforms + framacalc.
Wow, that's ethercalc behind the scenes, beautiful :)
You could selfhost Nextcloud + Nextcloud Office
Murena has a pretty nice online ecosystem with Nextcloud and OnlyOffice for those who don't want or know how to self-host
Privacy
A place to discuss privacy and freedom in the digital world.
Privacy has become a very important issue in modern society, with companies and governments constantly abusing their power, more and more people are waking up to the importance of digital privacy.
In this community everyone is welcome to post links and discuss topics related to privacy.
Some Rules
- Posting a link to a website containing tracking isn't great, if contents of the website are behind a paywall maybe copy them into the post
- Don't promote proprietary software
- Try to keep things on topic
- If you have a question, please try searching for previous discussions, maybe it has already been answered
- Reposts are fine, but should have at least a couple of weeks in between so that the post can reach a new audience
- Be nice :)
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much thanks to @gary_host_laptop for the logo design :)