Castmill: $8K a month, self-reported in 2023 — digital signage platforms

Castmill is a digital signage platform for building and monetizing signage networks. Its $8K a month was founder-reported on the Indie Hackers product page (not independently verified), as of July 2023.

What it actually sells

Castmill provides a platform, tools and support for building and monetizing a digital signage network. The site lists companies and growing or enterprise digital signage networks as customers.

The core workflow is to register a player, upload content and display it. Castmill supports layouts, HD video, images, widgets and templates. The Enterprise plan includes custom layouts, custom widgets, 4K support and analytics.

How it charges

Castmill shows Starter at $29/mo, Growth at $49/mo and Enterprise at $99/mo. The site describes Starter for starting with a couple of players, Growth for a growing network of players and Enterprise for an enterprise of players. The site also offers a free 14-day trial without a credit card.

Where customers come from

The site provides email and chat support across Starter, Growth and Enterprise. It also provides demos and documentation about usability and extensions.

What stands out

Castmill combines a three-step player workflow with support for layouts, HD video, images, widgets and templates. Its Enterprise plan adds custom layouts, custom widgets, 4K support and analytics. The site also presents Castmill as an extensible platform that supports custom widgets and new project functionality.

From the official site

We are helping companies around the world grow their digital signage businesses.

Layouts Yes HD Video Yes Images Yes Widgets Yes Templates No

Excerpts from the official website, fetched October 1, 2026.

Where it sits in the data

Castmill's $8K a month is higher than 64% of the 6,604 projects with founder-reported monthly revenue in our dataset; the median across them is $2K. Snapshot: 2026-09-30. The dataset only covers founders who chose to publish their numbers, so it leans toward businesses that work; use it for scale, not as an average.

Currency

All figures are in US dollars as published. A rough yuan or euro conversion is not applied here because prices, taxes and acquisition costs differ by country.

Could you build something like this?

My view is that this needs real work. The buyer would be a company or a growing or enterprise digital signage network that needs a platform for managing players and displaying content. The buyer would need a reason to prefer a dedicated platform for this workflow.

My view is that distribution would have to come through direct sales, demonstrations, documentation and word-of-mouth within digital signage networks. Building the product would require handling player management, media workflows, layouts, widgets, analytics and extensions. Support would add an ongoing load, while digital signage platforms and competing products would shape the commercial challenge.

Verdict: Needs real work.

One thing to take from it

Castmill shows a platform business with a clear three-step workflow, paid plans and a higher-priced Enterprise plan. The free 14-day trial, email and chat support, demos and documentation are visible parts of the offer.

Sources

Castmill official website, fetched October 1, 2026
Castmill pricing page, fetched October 1, 2026
Indie Hackers product page: revenue founder-reported on the Indie Hackers product page (not independently verified), as of July 2023

Revenue, team and start-cost figures are what the founder reported at the interview date, not current figures and not a prediction of what you will earn. Product and pricing facts come from the business's own website as checked on 30 September 2026. Method & sources · Disclosure