back-to-one
Blocking for Directors & DPs
Free · In‑App Purchases · Designed for iPad
From script to finished blocking.
back-to-one is the blocking tool for directors and cinematographers. Import your screenplay as FDX and the app builds the project for you: every scene with its slugline, and every character. Instead of starting from scratch, you start where the work begins.
SCRIPT IMPORT
- Import FDX, TXT or PDF
- FDX creates the project, scenes and characters automatically
- Pick scenes individually, OMITTED scenes are excluded
- Each scene's text laid out in proper screenplay format
CANVAS AND STAGING
- Top-down canvas, smooth on iPhone, iPad and Mac
- Place characters, cameras, lights, walls and props - or drag them straight from the menu onto the stage
- Room scan: on LiDAR devices the app captures walls, doors and windows and turns them into a usable floor plan
- Import a floor plan as a background image
- Scene templates, and save your own
- 146 props at true size - furniture, tableware and decor, animals, vehicles, film gear - each drawn in its own material, and the material switches off for plain outlines
- Import your own PNG props
- Background actor groups as a single object
- Copy the walls and openings of one scene into another
CAMERAS
- Auto-aim: the camera turns with the character it is linked to
- Field of view from focal length and sensor format (S35, FF, S16, MFT, ARRI LF, anamorphic)
- Six rig types: tripod, Steadicam, handheld, drone, action cam, crane
- Multi-cam setups, grouped by color
- 180-degree line with a crossing-the-line warning
- Viewfinder: live image in the project's aspect ratio, focal-length wheel, shutter - the frame lands on the shot of the camera you picked
SHOT LIST
- Every camera creates a shot, linked both ways with the canvas
- Shot numbers by setup (1A/1B)
- A storyboard image per shot - drop it on the plan too, tied to its camera
- Coverage status: open, shot, cut
- Estimated shooting time per shot, with totals
- Shoot day per scene, and a shoot-day filter
ANIMATION
- Timeline with keyframes, play, loop, speed
- Characters walk to waypoints, facing direction per keyframe
- Camera moves and orbits on smooth curves, dolly track drawn on the plan
- Follow: the camera tracks a character
LIGHT AND EXTERIORS
- Key, fill, back, practical, HMI, Kino, reflector
- Watts, dimmer, gel, diffusion, height, color temperature
- Real sun position by location, date and time, with golden hour detection
SET DOCUMENTS, READY TO HAND OUT
- Scene PDF with plan and shot table - also as a compact one-pager per scene
- Lighting plot with numbered fixtures and a legend
- Project overview as a PDF
- Shot list as Excel and CSV
- Canvas as an image
ON SET
- Full-screen presentation mode
- Dim, night and red-light modes for a dark set
- Works offline: open, edit and save in airplane mode, iCloud catches up when you are back online
PROJECTS AND COLLABORATION
- iCloud sync between iPhone, iPad and Mac
- Share projects through iCloud sharing
- Scene-level merge, auto-save, backups, duplicate whole projects
- Colour labels per scene, with a filter - shared along with the project
YOUR DATA
No server of our own, no tracking, no ads. Your content stays on your device and in your iCloud.
Available in English and German. For iPhone, iPad and Mac.
SUBSCRIPTION
Pro is available as an auto-renewing subscription (monthly or yearly, with a 7-day free trial) or as a one-time Lifetime purchase. Payment is charged to your Apple Account at confirmation. A subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. You can manage and cancel subscriptions in your Apple Account settings.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://back-to-one.de/datenschutz.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Three fixes, and two tools you can read again on a light stage.
• Fixed: storyboard images did not reach everyone in shared projects — and could even overwrite images that were already there. The app now tells "still on its way" apart from "deleted", and keeps what you have.
• Fixed: switching from a scene with an imported floor plan to one without zoomed the view far too far out, leaving the new scene as a speck in the middle. The old floor plan was still being counted in.
• The ruler is legible on a light stage again: line, points and measurement in dark amber instead of pale yellow.
• On a light stage, the camera's direction cone now has a dark outline. It used to be the same grey as the camera body — of all things the viewing direction, the first thing you look for on a camera. The setup colour is preserved.
The developer, ERIK HAFFNER, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- ERIK HAFFNER
- Size
- 8.2 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English and German
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Back-to-One Pro (Lifetime) $179.99
- Back-to-One Pro (Yearly) $79.99
- Back-to-One Pro (Monthly) $7.99
- Copyright
- © 2026 Erik Haffner
