# Lean: Inclinometer — Off-Road Pitch & Roll Meter > Live inclinometer for vehicles, showing pitch and roll with customizable warnings. (iPhone/iPad app by Carl Sieber.) - Source: https://appshunter.io/ios/app/lean-inclinometer/id6780365308 (this page in markdown: same URL + `.md`) - Developer: [Carl Sieber](https://appshunter.io/developer/6777791133) - Category: Utilities - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 17.0 · 1 MB - Languages: American English - Released: 2026-06-17 - Data updated: 2026-08-20 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/lean-inclinometer/id6780365308/reviews.md ## What is Lean? Lean turns your iPhone into a live inclinometer that's faster to read than a traditional gauge. It shows your vehicle's pitch and roll together, so a single look tells you your angle — climbing or descending, and how far you're leaning left or right. Set your own limits, and Lean warns you — amber as you approach, red at the limit. FEATURES • Pitch and roll in one view — read your vehicle's angle at a glance • Max Roll and Max Pitch — Lean holds your steepest angles for the drive; reset with a tap • Clean angle readouts in whole degrees — a plain "12°", never a signed "−12°" • One-tap Zero stores your mount angle, so Lean reads your vehicle's tilt, not the phone's • Rollover awareness — set caution and limit angles for roll and pitch, and Lean warns you with color and haptics as you near a limit • Share the angle — capture roll, pitch, and your warning color as a card • Ten dashboard color themes • Pick your rig — keep the classic deck, or swap in a live 3D wireframe Monster Truck or rubber duck that tilts with you • Portrait or landscape, in any mount — dashboard, vent, or a flat console charger • Built-in orientation lock — pin to portrait even when your device rotation is on • No GPS, no network, no account — everything runs on-device HOW IT WORKS Lean reads gravity directly from your iPhone's motion sensors to measure how far your vehicle is tilted — front-to-back (pitch) and side-to-side (roll). Park on level ground and tap Zero; Lean records your mount as the reference and measures every tilt from there. It shows both axes together, so you read your situation in one look instead of cross-referencing two gauges. Set caution and limit angles to match your rig, and Lean adds a warning on top — amber as you approach a limit, red at it, with haptics you feel without looking down. Roll is the axis that matters most for tipping, so the warning follows whichever of roll or pitch is nearer its limit. No GPS. No calibration drive. No account. Mount your iPhone in portrait, zero it once, and drive. GREAT FOR • Overlanders and rock-crawlers reading side-slopes and climbs • 4x4, off-road, and trail driving where knowing your angle matters • Anyone who wants a clear, glanceable read on roll and pitch • Sizing up an obstacle before you commit PRIVACY Lean is a pure motion app. It reads gravity from your iPhone's sensors and nothing else — no GPS, no network, no account. Your zero reference and settings stay on your device and are never uploaded. No account. No signup. No internet connection. No location permission. QUICK START 1. Mount your iPhone in portrait in a dashboard or vent mount 2. Park on level ground and tap Zero 3. Drive — your angle updates live as the terrain changes 4. Set your caution and limit angles in Settings to match your rig IMPORTANT Lean estimates tilt from your iPhone's motion sensors and is an aid, not a guarantee. It cannot account for loose surfaces, shifting loads, or sudden movement. Never rely on it as a substitute for your own judgment. Mount your phone safely, keep your eyes on the trail, and always drive responsibly and obey local laws. ## Key features - Simultaneous pitch and roll display - Customizable caution and limit warnings - Haptic feedback for alerts - One-tap zeroing for mount angle - Multiple dashboard color themes - Works offline, no GPS or account needed ## Frequently asked questions about Lean ### What is Lean used for? Lean turns your iPhone into a live inclinometer to measure your vehicle's pitch and roll angles. It's designed for off-road driving to help you understand your vehicle's tilt on slopes and inclines. ### How does Lean measure tilt? Lean uses your iPhone's motion sensors to read gravity and calculate your vehicle's tilt. You simply mount your phone in portrait mode, park on level ground, and tap 'Zero' to set your reference angle. ### Does Lean have ads? No, Lean is completely ad-free. It also does not require GPS, a network connection, or an account, ensuring a private and uninterrupted user experience. ### Can I set custom warnings in Lean? Yes, you can set custom caution and limit angles for both pitch and roll. Lean will alert you with visual cues (amber and red) and haptic feedback as you approach or reach these limits. ### What devices does Lean support? Lean is currently supported on iPhone devices. It is designed to work in any portrait mount, such as on a dashboard, vent, or console charger. ### How often is Lean updated? The latest version of Lean is 1.2, which was last updated on July 1, 2026. Updates typically focus on improving sensor accuracy and user experience based on feedback. ### What is the age rating for Lean? Lean has an age rating of 4+. This indicates it is suitable for users of all ages and does not contain any mature content. ### Is Lean accurate for off-roading? Lean provides an estimate of tilt from your iPhone's motion sensors and serves as an aid. It cannot account for factors like loose surfaces or shifting loads, so it should not replace your own judgment while driving. ## Version history (last 5 releases) ### 1.4.1 — 2026-08-12 In our rubber duck excitement, we ducked up — Share could post a broken card with a rig active. Fixed: Share now renders your actual Monster Truck or duck. ### 1.4 — 2026-08-11 NEW: Pick your rig — swap the deck for a live 3D wireframe Monster Truck (or a rubber duck) that tilts with you. Find it in Settings, in every color theme. ### 1.3 — 2026-07-17 NEW: Max Roll and Max Pitch — Lean holds your steepest angles for the drive. Plus landscape support, orientation lock, ten color themes, and a redesigned Share card with a scannable QR. ### 1.2 — 2026-07-01 Share your angle. Tap the share icon to capture your current pitch and roll — including the live warning color if you're near a limit. Settings now uses native iOS controls — your color, warning angles, and zero reference are a natural part of the app. Updated splash screen and other minor visual refinement. ### 1.0.1 — 2026-06-18 • Refinements to the launch screen and a more polished first run. Lean remains a fast, private inclinometer for off-road driving — your vehicle's pitch and roll at a glance, with a two-stage warning at the limits you set. ## Apps similar to Lean | App | Rating | Price | Category | | --- | --- | --- | --- | | [Flir Meterlink](https://appshunter.io/ios/app/flir-meterlink/id6444540138) | 4.2 (34) | Free | Utilities | | [Lean Angle: Moto Tilt Meter](https://appshunter.io/ios/app/lean-angle-moto-tilt-meter/id6761253773) | 1.0 (1) | Free | Utilities | | [SafeRide: Telemeter](https://appshunter.io/ios/app/saferide-telemeter/id6757718904) | — | Free | Utilities | | [Audio Editor - MP3 Cutter App](https://appshunter.io/ios/app/audio-editor-mp3-cutter-app/id6760572090) | 5.0 (5) | Free | Utilities | | [Dry Fire - Shot Timer](https://appshunter.io/ios/app/dry-fire-shot-timer/id1601447994) | 2.3 (33) | Free | Utilities | | [Off-Road Inclinometer](https://appshunter.io/ios/app/off-road-inclinometer/id1489831780) | 4.6 (763) | Free | Utilities | ## More apps by Carl Sieber - [Pull: Acceleration Tracker](https://appshunter.io/ios/app/pull-acceleration-tracker/id6777791130) - [Level: Sound Level Meter](https://appshunter.io/ios/app/level-sound-level-meter/id6781562419) - [Grip: G-Force & Cornering](https://appshunter.io/ios/app/grip-g-force-and-cornering/id6781833028) - [Sweep: Speaker Tuning](https://appshunter.io/ios/app/sweep-speaker-tuning/id6784438195) All apps by Carl Sieber: https://appshunter.io/developer/6777791133 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*