Check whether an object or surface is level before you drill, hang, adjust, or align.
Precision Toolkit for iPhone
Free Bubble Level App for iPhone
Turn your iPhone into a practical spirit level for shelves, picture frames, furniture, surfaces, and everyday DIY alignment checks.
Free to download. Optional Pro features may be available in the app.
Use your iPhone sensors to read tilt and alignment when a physical level is not nearby.
Useful for frames, shelves, furniture, small repairs, setup jobs, and everyday measurements.
How to use iPhone as a spirit level
Use your iPhone as a level in four simple steps.
Precision Toolkit gives you a clean level view for fast alignment checks. Place your iPhone carefully, let the reading settle, and use calibration when you need a reliable reference surface.
Open Bubble Level
Launch Precision Toolkit and choose the Bubble Level or Surface Level tool.
Place your iPhone
Set the phone edge or back against the object, shelf, frame, table, or surface.
Read the angle
Watch the bubble and degree reading to see whether the object is level or tilted.
Calibrate when needed
Use a known reference surface for better everyday accuracy before important checks.
Best level tool app for DIY
More than a bubble level.
Precision Toolkit combines leveling, alignment, camera, AR, direction, and movement tools so one iPhone app can help across common home improvement jobs.
Check horizontal and vertical alignment with a familiar level interface.
Measure roll and pitch on flat surfaces for tables, appliances, shelves, and stands.
Use camera guide lines for wall alignment, frames, shelves, and visual setup tasks.
Estimate distance, size, and area when you need quick measurements around the room.
Check vertical alignment and tilt direction for hanging and positioning work.
View heading, direction, coordinates, and elevation for outdoor or setup tasks.
Helpful for everyday projects, careful about critical work.
A level app is useful when you need a fast check and do not have a physical tool nearby. Readings can be affected by calibration, device model, phone cases, sensor drift, magnetic interference, and how steadily the phone is placed.
Measurement note
For construction, safety, legal, professional, or high-precision work, verify app readings with dedicated measuring equipment.
FAQ
Bubble level app questions.
Can I use my iPhone as a spirit level?
Yes. Precision Toolkit uses iPhone sensors to help check horizontal, vertical, and surface alignment for everyday measuring and DIY tasks.
Is Precision Toolkit free?
Precision Toolkit is free to download on the App Store. Optional Pro features may be available through an in-app subscription.
What can I level with my iPhone?
You can check shelves, picture frames, furniture, tables, appliances, wall decor, and other everyday objects where a quick alignment check is useful.
Does it replace a professional level?
It is best for convenient everyday checks. For critical measurements, verify results with professional equipment and proper project judgment.
Precision Toolkit
Download on the
App Store
Download the free bubble level app for iPhone.
Start with Bubble Level and Surface Level, then explore the full measuring toolkit.