Built by GDK Digital
Know your Pitch.
Read pitch, save the picture, and add job notes with the phone you carry. Use Direct Mode for contact-based sensor readings or Camera Mode to keep the guide and reading with a roof photo.
Pitch Please is $2.99, bought once, with no subscription and no in-app purchases. Ratings and device compatibility are shown on the store listings above, and the store is always the authority on current pricing. 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 and photo documentation app for iPhone and Android from GDK Digital LLC. It reads device inclination from motion sensors. Choose Imperial X:12 pitch with degrees or International percent slope with degrees, use built-in calibration, and keep captures and annotated copies in Saved Pictures.
Use it for field reference and documentation: a contact reading, a saved image, and the job details you need later. Verify measurements that determine material orders, final estimates, code, engineering, or safety decisions with the appropriate method and instruments.
Looking for a digital roof pitch gauge or inclinometer app? See how Direct Mode works. For phone support and installation, see Pitch Please for iPhone and Android.
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.
Camera Mode displays the phone's sensor reading beside a fixed guide in the live camera view. Aligning the guide with a visible sloping roof profile can help document the scene, but the app does not calculate roof geometry from the image. Perspective and phone orientation can change the result. A stable indicator means the sensor reading has settled; it does not confirm the roof angle.
Choose Imperial X:12 pitch with degrees or International percent slope with degrees in Settings. The app displays the selected system, one at a time.
Every deliberate capture is kept in the on-device Saved Pictures archive before export. Reopen a capture to add movable, resizable Address, Job number, or Notes labels with separate text and background colors. Annotated copies keep the original unchanged. When photo permission is available, the app also saves a copy to your device photo library.
Use the calibration controls in Settings and follow the in-app Help. Phone placement, the contact surface, and orientation still affect a reading.
These earlier interface examples show the readout and saved-image overlays. The displayed values are device-sensor readings, not a validation of the roof geometry shown. Current layouts may differ.
Working without the app, or want the level-and-tape method? The guide to measuring roof pitch three ways covers a level and tape measure, reading a rafter from the attic, and taking it from the ground.
Each page below goes deeper on one situation: the trade you work in, the phone you carry, or the feature you are shopping for.
Contact readings, photo documentation, and separate reference math for estimating.
A slope reading kept with the photo it came from, for the claim or report file.
Camera Mode, the alignment guide, and what the saved photo contains.
Direct Mode, contact readings, and the inclinometer and gauge terms people search for.
Device support, what is identical across platforms, and what runs offline.
Compare measurement, saved pictures, job labels, accounts, and pricing models.
What changed in each release, and how to tell which version you have.
Roof slope is written here as rise to horizontal run: 6:12 means a rise of 6 inches for every 12 inches of run. It is the same slope often written 6/12, and equals 26.6 degrees or 50 percent slope. We use the colon form consistently to match the app's X:12 display. In stricter framing terminology, pitch can mean rise over the full span; this page uses the roofing rise-to-run convention.
The full 1:12 to 24:12 reference, including the steep-slope range, lives on its own page: the roof pitch chart with degrees, slope and multipliers, which also works through how to convert pitch to degrees by hand.
The last column is the pitch multiplier, or slope factor: the square root of (rise squared plus 144), divided by 12. Multiply the horizontal projected area of a roof plane by its factor. For example, 2,000 square feet at 6:12 gives 2,000 × 1.1180, or about 2,236 square feet of sloped surface. Include overhangs in the projected area and calculate different roof planes separately. Waste and other material allowances are additional. This is website reference math; the app does not calculate the multiplier or a material order.
Example multipliers: 4:12 is 1.0541, 5:12 is 1.0833, 6:12 is 1.1180, 7:12 is 1.1577, 8:12 is 1.2019, 9:12 is 1.2500, 10:12 is 1.3017, and 12:12 is 1.4142.
| Pitch | Angle (degrees) | Slope (percent) | Pitch multiplier |
|---|---|---|---|
| 3:12 | 14.0° | 25.0% | 1.0308 |
| 4:12 | 18.4° | 33.3% | 1.0541 |
| 6:12 | 26.6° | 50.0% | 1.1180 |
| 8:12 | 33.7° | 66.7% | 1.2019 |
| 12:12 | 45.0° | 100.0% | 1.4142 |
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.
In Direct Mode, hold the phone in landscape with its long edge resting along a safely accessible slope in the direction of fall. The app reads device inclination from motion sensors. Camera Mode puts a fixed guide beside that sensor reading in a live view; it does not calculate roof geometry from the photo. Check calibration, placement, and the limits of each mode before relying on a reading.
Both modes read device inclination from motion sensors. Direct Mode uses contact with the surface and saves the measurement screen. Camera Mode shows a fixed guide in a live camera view and saves the photo with an overlay. Camera alignment and stability do not establish the actual roof angle.
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 pitch multiplier converts the horizontal projected area of a roof plane into sloped surface area. At 6:12, 2,000 square feet times 1.1180 is about 2,236 square feet. Include overhangs, handle different pitches separately, and add waste allowances separately. The calculator and chart on this website provide reference math; Pitch Please does not calculate a material estimate.
On this site, "steep pitch" describes slopes above 8:12. Exactly 8:12 is outside that description. This is a description for homeowners and roofers, not a material, code, or fall-protection threshold. Follow the applicable manufacturer instructions, building code, and safety requirements. A 12:12 roof is 45 degrees; pitches above 12:12 rise more than they run.
Pitch Please runs on iPhone and iPad with iOS or iPadOS 16.4 or later, and Android phones and tablets with Android 10 or later. It is distributed through the Apple App Store and Google Play. Check your device compatibility on its store listing before purchase.
Pitch Please is a field reference and photo documentation tool, not a certified engineering instrument. Verify material orders, final estimates, code, engineering, safety, or construction decisions with the required instruments and your local requirements.
No account is required. Measurement, capture, Saved Pictures, annotation, and in-app Help work offline. When online, the app checks a public version file for update information; it does not upload your measurements or pictures. See the Pitch Please privacy policy for permission and update-check details.
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.
Yes. Pitch Please includes built-in calibration in Settings. Follow the in-app Help and verify important readings independently; calibration does not remove placement or perspective errors.
Every deliberate capture is kept in the on-device Saved Pictures archive before export. Reopen a capture to add movable, resizable Address, Job number, or Notes labels with separate text and background colors. Annotated copies keep the original unchanged. When photo permission is available, the app also saves a copy to your device photo library.
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.
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