Free browser-based Gantt tool that lives inside Google Sheets as a sidebar, rendering real Gantt bars from the user's own data without migrating to another app
A generation of project managers learned to plan inside Google Sheets and no free tool has respected that habit since Gantter went paid
Built for Small teams and freelancers using Google Sheets for project planning who need basic Gantt visualization without subscription costs..
Staying inside Sheets means zero switching cost and zero data migration, which is the exact reason users fled when Gantter started charging
“Gantter used to be free and was much easier to use than manually making a Gantt chart on Google Sheets. We switched to Gantter until they started charging.…”
The receipts — real demand
“Gantter used to be free and was much easier to use than manually making a Gantt chart on Google Sheets. We switched to Gantter until they started charging.”
Full dossier
Unlock the full dossier — free
Every corroborating quote, the source receipts, and the community echo. One email, no payment.
demand score 6.7 — the receipts are below
Why this is a gap
Surfaced from a high-intensity complaint with clear willingness to pay and a specific, reachable audience.
The market
Small teams and freelancers using Google Sheets for project planning have steady demand (1000 monthly searches). These users want basic Gantt visualization without subscription costs—a cost-sensitive segment actively searching for free alternatives.
Competition & the opening
Gantter, Smartsheet, and native Google Sheets Gantt add-ons exist (competition 7/10). The opening is a free, lightweight Gantt tool that integrates cleanly into Sheets without monthly fees—targeting users burned by Gantter's paywall transition.
What's hard to build
Building interactive Gantt charts inside Google Sheets requires deep familiarity with Google Apps Script, which is underpowered for complex UI rendering. At feasibility 7/10, the hard part is handling drag-and-drop task dependencies and real-time updates within Sheets' API constraints.
Why now
Gantter and Monday.com moved upmarket; massive demand for free Gantt tooling in Google ecosystem.
How you'd monetize
Freemium with $12/mo paid tier