Sketch to massing to render to walkthrough. The whole early-stage loop in one place, so testing an idea costs minutes instead of an afternoon.
Concept stage is where schemes are won and lost, and it's the stage most software serves worst. Modelling packages are too slow to think in, and rendering tools only start once the decisions have already been made. ArchAdemia Tools covers drawing, modelling and rendering in one place and takes whatever you've already drawn as its starting point, so an idea gets tested while it's still cheap to change it.

Draw the plan and model the building in one editor, to scale, with the conventions of the discipline built in. Or bring in a hand sketch, a CAD export or a viewport screenshot and start from that instead.

The plan and the model are the same building, so massing, storeys and roof form are already there in what you drew. Enough to judge proportion, overshadowing and street presence without a full BIM model.

Composition-preserving rendering: your geometry stays exactly where you put it, so a render tests your scheme rather than inventing a nicer one.
A hand sketch, a scanned plan or a screenshot from your modelling package goes in and a resolved image comes out. There's no export, no round trip, and nothing to rebuild in a second application. Concept stage runs on momentum, and every handoff is somewhere momentum leaks away.
Open Image
Most rendering tools take your image as a loose suggestion and hand back a handsome building that isn't the one you designed. However good it looks, you can't decide anything from it. ArchAdemia Tools holds your composition, massing and openings and changes only the material, the light and what's around it, so the render answers a question you actually asked.

Push the massing up a storey, or pull the footprint back off the boundary line, or try a pitched roof against a flat one on the same site. Concept stage lives or dies on volume and form. A massing model that takes minutes rather than a day means five versions get tested before one of them gets defended in a meeting.

Step inside the drawing in first person at concept stage rather than after planning, with real collision against the walls and doors and windows that open. A spatial problem you can miss in plan and only half-see in section is unmissable at eye level, and it's far cheaper to fix now than at technical design.

Hand sketches, CAD exports and viewport screenshots are all valid starting points, so nothing has to be rebuilt to begin.
Form and volume from a drawing or a brief, fast enough to judge proportion and overshadowing before committing to a full model.
Material, light and context change while your geometry stays put, so the render tests the scheme you actually drew.
Step inside the drawing itself while the scheme is still cheap to change, and catch the spatial problems a plan hides.
The same view across materials, seasons, times of day and massing variants, produced as a set rather than one at a time.
Drawing, modelling and rendering under one subscription; moving between them costs nothing and loses nothing on the way.
Every ArchAdemia Tools plan includes everything on this page. From £29 a month, all in, with no per-tool fees and no surprise charges.