Step 01
Plan the area
Type the length and width, or walk it with Pace it when you have no tape. Mostline rates the area and marks whatever doesn't fit as too big.
Sports field marking for iPhone
Plan. Mark. Share.
Got free ground and a tape measure? Mostline fits official fields into your area and tells you where every line goes, one measurement at a time.
Coming soon on theApp Store
See how it works
- 11 official field formats
- 6 sports
- 3-4-5 right-angle checks
- 12 fields per site
- 0 accounts, works offline
[ How it works ]
From empty ground to a field you can play on
Measure your area once. Mostline does the geometry and leaves you with a list of distances you can follow with a tape.
Step 02
Lay out the fields
Drag a field into place, turn it to any angle, add more. Sizes stay proportional to the official ones, so nothing ends up stretched.
Step 03
Mark and share
Follow the steps on the grass, then send the plan as a PDF or an image to whoever is helping you set up on match day.
[ On the grass ]
One distance at a time, in type you can read in the sun
Each step tells you what to mark, how far it is and which stake to measure from. Tap Done and the next line lights up on the map. Your progress is saved after every step, so you can stop and pick up later.
- Corners, diagonals, centre circle, penalty marks, goal posts
- Full list of steps, with what is done and what is left
- Keep screen on, sound and haptics for working outdoors
[ Formats ]
Will it fit?
Enter your area and see what you could mark on it. This is the same check the app runs, with the run-off zone included.
[ Materials and export ]
Know what to bring before you leave the house
Mostline counts the cones for each field and adds up every line, then works out how much paint you need from your line width, coverage and coats. Open the cone plan to see where each one goes.
- Cones
- 110
- Lines
- 365.7 m
- Fields
- 2 × 5×5
Example from a two-field site on a 62 × 30 m Orlik, with cones every 5 m.
FAQ
Do I need an account or internet?
No. There is no sign-up, and the app makes no network requests. It works on a field with no signal, including the first launch.
Which sports does it cover?
Football 11×11, 9×9, 7×7 and 5×5, Mini 4×4 and 3×3, futsal, handball, volleyball, beach volleyball and basketball.
What do I need on the ground?
A tape measure, plus cones, stakes or line paint. Mostline calculates and shows the instructions. It doesn't measure anything by itself.
What if I don't have a tape measure yet?
Use Pace it on the Your area step to count your steps and estimate a side. You can calibrate your step length in Settings. For the marking itself, a tape gives you straight, square lines.
Can I fit several fields on one site?
Yes, up to 12. Add field only offers formats that still fit into the free space.
Can I use feet instead of metres?
Yes. Switch Units in Settings and every size in the app changes to feet.
How do I share a plan?
Tap Export on a site and choose PDF or Image. The PDF can include the plan, marking steps, materials and cone numbers. Then send it through the iOS share sheet.
Where are my sites stored?
Only on your iPhone. Nothing leaves the device unless you share a plan yourself. Deleting the app deletes your sites.
Are there ads or in-app purchases?
No. Mostline has no ads, no in-app purchases and no tracking.
Which devices does it run on?
iPhone with iOS 16 or later. The interface is in English, in portrait.