TillyGen vs Celtx

What Celtx is for

Scriptwriting tool that grew into a pre-production suite with breakdowns, scheduling and budgeting.

Teams whose process starts with a screenplay.

Tools that grew out of screenwriting think in scenes and pages. That fits narrative film and fits commercials or corporate work less well, where the starting point is not a script but a brief with an audience, a message and a deadline.

Where Celtx is strong

A comparison that only lists your own upsides is not one. This is what speaks for Celtx:

• Screenplay formatting and breakdown in one place
• Long-standing tool with a large template library
• Entry-level pricing tiers exist

Where the limits are

And these are the points where teams run into limits in practice — not as a flaw, but as a consequence of the design:

• Assumes a screenplay as the starting artefact
• Commercial and corporate briefs have to be forced into a script shape first

Where TillyGen takes a different route

TillyGen starts from a client brief, which is how most commercial and corporate work actually arrives.

TillyGen turns a brief into a shoot-ready package: shot list, storyboard, schedule and call sheet that stay connected. Change the creative direction and the affected shots are flagged rather than quietly left behind.

Which tool when

In short: Teams whose process starts with a screenplay. If your bottleneck is instead getting from a brief to a plan that holds, that is where TillyGen starts.

The useful question before switching is not which tool does more, but where the process stalls today. Three bottlenecks come up again and again in production teams, and they call for different tools:

• The plan comes together too slowly: days pass between the brief and a shoot-ready shot list, with the client already chasing.
• The paperwork drifts apart: shot list, schedule and call sheet live in three files, and after the second change none of them agrees with the others.
• Distribution eats the time: the plan is done, but every version has to be sent to twenty people by hand and chased up.

What to check before switching

If your jobs rarely start from a screenplay, that mismatch shows up on day one.

Switching tools mid-production almost always costs more than it saves on that job. The sensible moment is between two projects, with a pilot small enough to run twice if it comes to that. Check first whether the export formats match what post and accounting expect — migrations fail there more often than on features.