No-code database vs spreadsheet?

Short answer

A spreadsheet is great for calculations and personal lists; a no-code database is better when several people work with the same structured data.
In a spreadsheet, every cell accepts anything; in a no-code database, each field has a real type, so data stays clean.
No-code databases link tables together (clients ↔ orders) instead of copying the same values across several sheets.
You get multiple views, automations, forms and real-time collaboration — things a spreadsheet doesn't do.
You move from a spreadsheet to 4database.net by importing the CSV/Excel file; you keep the data and gain a database structure.

Data integrity: field types (date, number, select) prevent the bad entries a spreadsheet accepts with no rules.
Relations instead of copying: you link one record to another and update it in a single place, with no duplicate values across sheets.
One source, many views: the same clients can appear as a Grid, as a Kanban by stage and as a Calendar view.
Real collaboration: simultaneous editing, comments and change history, instead of files emailed in dozens of versions.
Scalability: tens or hundreds of thousands of rows stay fast and easy to filter, where a large spreadsheet becomes sluggish.

An agency that kept clients in a shared spreadsheet moves to a table with client ↔ project links and a Kanban view by stage.
A startup that tracked its roadmap across several sheets unifies it into one table with a Timeline view for releases.
An HR team replaces its candidate sheet with a table fed by an application Form and a Kanban view across hiring stages.

Forcing the spreadsheet to do database work, with dozens of tabs linked by fragile formulas that break at the first reorganization.
Letting the whole team edit the same file: parallel versions and overwrites appear and you no longer know which one is right.
Keeping everything manual: copying data from one tab to another instead of using links and automations.
Misjudging the need: for a short personal list, a spreadsheet is enough — the problem appears when data grows and several people collaborate.

You import the CSV/Excel file in one click and immediately get a structured no-code database, with nothing to rewrite.
Real field types and over 25 types (select, date, link, formula, attachment) keep your data clean.
Six views (Grid, Kanban, Calendar, Gallery, Timeline, Form) over the same data, instead of separate tabs.
Real-time collaboration with granular permissions, comments and history — no files emailed in dozens of versions.
Automations, data-collection forms and an instant REST API, plus self-hosting and GDPR — your data stays yours.