Built by GDK Digital
Know your Pitch.
Measure a roof slope with the phone already in your pocket. Pitch Please reads the angle from your device sensors and shows it as an X:12 pitch with the angle in degrees, then saves a photo with the measurement drawn right on the image so the number travels with the proof.
Current pricing, ratings, and device compatibility are shown on the store listings above. Pitch Please is published by GDK Digital LLC and distributed only through the Apple App Store and Google Play.
Pitch Please is a roof pitch measurement app for iPhone and Android from GDK Digital LLC. It reads slope from your phone's motion sensors. Imperial, the default, shows an X:12 pitch with the angle in degrees; International switches to slope units. You pick one in Settings. It can also save a photo with the reading drawn on the image.
The usual way to get a roof pitch is to climb up with a level and a tape measure, or to squint at it from the driveway and guess. The first is slow and puts someone on a ladder. The second throws off material orders, estimates, and claim documentation. Pitch Please is the small tool in between: a reading in seconds, a photo you can attach to a file, and no equipment beyond the phone you already carry.
If you have searched for a roof pitch gauge, a roof slope finder, an inclinometer app for roofing, or a digital clinometer, this is that tool, with the roofing units built in. Instead of giving you a bare angle to convert by hand, it reports the pitch the way a roofing crew actually writes it.
Every roof is a different problem. Sometimes you can put a hand on the surface, and sometimes you are standing in the yard. Pitch Please ships both modes.
Rest the phone on the slope itself and read the angle straight from the device sensors, the way you would use a digital inclinometer or clinometer. Hold it in landscape with the long edge in line with the fall of the roof. Direct Mode saves a screenshot of the measurement screen.
Point the camera at the roof and match the live alignment guide to the roof line. Useful when you cannot safely reach the surface. The saved photo includes the guide line, the pitch or slope value, and the degree reading baked into the image.
Imperial is the default and reads out as an X:12 pitch with the angle in degrees. International switches the reading to slope units. You choose one system in Settings; the app shows that one.
Calibrate on a known flat surface before you measure for the most repeatable results. Recalibrate if the device was dropped, updated, or moved between very different environments.
Real readings, not mockups. Camera Mode draws the alignment line on the roof edge and bakes the pitch, degrees, and stability state into the photo you save.
Pitch Please was built for people who need a slope number quickly and need to be able to show where it came from.
Check slope in the field before ordering material or committing to a bid.
Record a defensible pitch reading with a photo attached to the file.
Get the pitch factor right the first time so waste and labor numbers hold up. For full commercial low-slope estimating, our sibling brand Feathers AI handles multi-manufacturer takeoffs and system selection.
Confirm a slope for a shed, deck, ramp, gutter run, or a small addition.
Roof pitch is written as rise over run, where the run is always 12 inches. A 6:12 pitch rises 6 inches for every 12 inches of horizontal travel, which is 26.6 degrees, or a 50 percent slope. Pitch Please shows the reading for whichever unit system you have set, so here is the full conversion reference on paper, covering common residential slopes through the steep-slope range up to 24:12.
The last column is the pitch multiplier, also called the roof pitch factor or slope factor. Multiply the flat footprint area by it to get the actual sloped roof area: a 2,000 square foot footprint at 6:12 is 2,000 × 1.1180, or about 2,236 square feet of roof. The multiplier is reference math for estimating, not a reading the app takes.
| Pitch | Angle (degrees) | Slope (percent) | Pitch multiplier |
|---|---|---|---|
| 1:12 | 4.8° | 8.3% | 1.0035 |
| 2:12 | 9.5° | 16.7% | 1.0138 |
| 3:12 | 14.0° | 25.0% | 1.0308 |
| 4:12 | 18.4° | 33.3% | 1.0541 |
| 5:12 | 22.6° | 41.7% | 1.0833 |
| 6:12 | 26.6° | 50.0% | 1.1180 |
| 7:12 | 30.3° | 58.3% | 1.1577 |
| 8:12 | 33.7° | 66.7% | 1.2019 |
| 9:12 | 36.9° | 75.0% | 1.2500 |
| 10:12 | 39.8° | 83.3% | 1.3017 |
| 11:12 | 42.5° | 91.7% | 1.3566 |
| 12:12 | 45.0° | 100.0% | 1.4142 |
| 13:12 | 47.3° | 108.3% | 1.4743 |
| 14:12 | 49.4° | 116.7% | 1.5366 |
| 15:12 | 51.3° | 125.0% | 1.6008 |
| 16:12 | 53.1° | 133.3% | 1.6667 |
| 17:12 | 54.8° | 141.7% | 1.7341 |
| 18:12 | 56.3° | 150.0% | 1.8028 |
| 19:12 | 57.7° | 158.3% | 1.8727 |
| 20:12 | 59.0° | 166.7% | 1.9437 |
| 21:12 | 60.3° | 175.0% | 2.0156 |
| 22:12 | 61.4° | 183.3% | 2.0883 |
| 23:12 | 62.4° | 191.7% | 2.1619 |
| 24:12 | 63.4° | 200.0% | 2.2361 |
Measurement note. Pitch Please is a field reference and documentation tool. Verify final code, engineering, safety, or construction decisions with the required professional instruments and your local requirements.
Hold the phone in landscape and lay its long edge along the slope, in line with the direction of the fall. Direct Mode reads the angle straight from the device sensors. Camera Mode instead lines an on-screen guide up with the roof edge, for when you cannot reach the surface. Calibrate on a known flat surface first.
Direct Mode measures the angle of the phone itself, so you rest the device on the surface. Camera Mode shows a live view with an alignment guide you match to the roof line, so you can read it from a distance. Both save an image: Direct Mode the measurement screen, Camera Mode the photo with the overlay.
A 6:12 roof pitch rises 6 inches of height for every 12 inches of horizontal run. That works out to 26.6 degrees, or a 50 percent slope. In Imperial mode Pitch Please shows the X:12 pitch alongside its angle in degrees, so you do not have to convert between those two.
The roof pitch multiplier, also called the pitch factor or slope factor, converts flat footprint area into actual sloped roof area. Multiply the footprint by the multiplier for that pitch: 2,000 square feet at 6:12 is 2,000 times 1.1180, or about 2,236 square feet of roof. It is reference math for estimating, not a reading the app takes.
Roofing convention treats anything above 3:12 as steep-slope and 3:12 or below as low-slope, which is what drives material and installation requirements. Most residential roofs land between 4:12 and 12:12. Mansard, Victorian, Tudor, and some commercial gable designs run well past that, up to 24:12, which is 63.4 degrees.
Pitch Please runs on iPhone and iPad with iOS 16.4 or later, and on Android phones and tablets. It is distributed through the Apple App Store and Google Play only.
No. Pitch Please is a field reference and documentation tool for fast, repeatable readings and photo records. Verify final code, engineering, safety, or construction decisions with the required professional instruments and your local requirements.
No. Measurement runs on the device using its own sensors and camera. There is no GDK Digital account to create in order to take a reading. See the Pitch Please privacy policy for how camera, photo, and sensor access are handled.
No. The direct APK download was retired when Pitch Please shipped on Google Play. Install it from Google Play or the Apple App Store so you get signed builds and automatic updates.
Email support@gdkdigital.com or start at the Pitch Please support page, which lists what to include so we can reproduce the issue quickly.
Pitch Please is designed, built, and published by GDK Digital LLC, a software company in Benton Harbor, Michigan. We build practical tools for field and trades work and run them ourselves before we sell them. Pitch Please is one of several products in the Built by GDK portfolio, alongside our secrets management, team communications, CRM, and QR platform products.
Available now on the Apple App Store and Google Play.