What to look for in a motorhome levelling app
Not all levelling apps are created equal — and most weren't created with motorhomes in mind at all. Before comparing specific apps, here's what actually matters for a motorhome at a campsite:
- Works offline. You're often parked somewhere with no signal. An app that needs the internet to function is useless in the Kimberley, the Flinders Ranges, or half of outback Queensland.
- Motorhome-specific, not caravan-specific. Motorhomes level differently — you drive onto ramps, you don't hitch and adjust. The app needs to reflect that.
- Tells you what to do, not just the angle. Knowing you're 2.3° off lean is useless on its own. You need to know which wheel needs raising and by how much — ideally in millimetres, not degrees.
- No App Store required. Hunting down an app in a car park, downloading it on patchy signal, and keeping it updated is friction you don't need. A Progressive Web App you load once and use forever is better.
- Works on both iPhone and Android. Most motorhome couples have mixed devices. An iOS-only app cuts out half the people it could help.
- Reads both axes simultaneously. Roll and pitch at the same time, so you can plan one pass rather than fix one and discover the other.
The apps worth knowing about
Free · Pro $9.99 AUD once · iPhone & Android · No App Store · 100% offline
OzLevel is a Progressive Web App built specifically for Australian motorhomers. It reads your phone's accelerometer and gyroscope to measure exact roll and pitch, converts that to millimetres of rise required at each wheel, and — in Pro — calculates the exact ramp step count for your specific ramp brand. Works completely offline after the first load. No App Store, no subscription, no account required for the free tier.
The free tier gives you the rise in millimetres. Pro adds the ramp step calculator, dual-axis simultaneous mode, hands-free audio guidance, slideout seal protection, and Pair Mode (two-device live display) — for $9.99 AUD once. No ongoing cost, no annual fee.
What's good
- Built for motorhomes specifically
- 100% offline — works anywhere
- iPhone and Android
- No App Store download
- Millimetre rise at each wheel
- Ramp step calculator (Pro)
- Hands-free audio mode (Pro)
- Pair Mode — two-device display (Pro)
- Australian-made and supported
Worth knowing
- Ramp calculator requires Pro
- Browser-based — add to home screen for best experience
Free / Paid · iOS & Android · App Store required
A well-established levelling app in the Australian RV community. Shows degree and colour-coded level indicators with basic audio feedback. Does the job for simple levelling checks but is built primarily with caravans in mind — the interface and guidance language reflects a towable setup rather than a drive-on motorhome workflow. Doesn't calculate ramp step counts or give millimetre rise figures.
What's good
- Established, well-reviewed
- Simple to use
- iOS and Android
Worth knowing
- Caravan-focused language and workflow
- No millimetre rise calculation
- No ramp step calculator
- App Store download required
Free / Pro · Primarily iOS · App Store required
Designed for a two-device setup — one phone left in the van, another carried by the driver or a spotter. The remote reading concept is clever for caravans where the driver walks back and forth. For a motorhome, where you're in the cab and your phone is inside the vehicle, it's solving a problem you don't really have. The remote feature requires a Pro subscription and a second device.
What's good
- Remote display on second device
- Apple Watch support
Worth knowing
- Primarily iOS — limited Android support
- Two-device concept not relevant for motorhomes
- Remote feature needs subscription
- No ramp step calculator
Free · Various · App Store required
The App Store and Google Play have dozens of spirit level apps built for tradies and builders — not motorhomers. They'll give you a degree reading or a bubble graphic, but that's where they stop. No millimetre rise calculation, no ramp step guidance, no offline-first design, no motorhome context. Fine in a pinch if you already know your ramps well enough to convert degrees to blocks in your head. Not the tool for the job.
What's good
- Free and widely available
- Simple angle reading
Worth knowing
- No motorhome context or guidance
- Degrees only — no millimetre conversion
- No ramp step calculation
- Not designed for offline use
Feature comparison
| Feature | OzLevel | Caravan Leveller | Caravan Level Remote | Generic apps |
|---|---|---|---|---|
| Motorhome-specific | ✓ | ✗ | ✗ | ✗ |
| Millimetre rise per wheel | ✓ | ✗ | ✗ | ✗ |
| Ramp step calculator | ✓ Pro | ✗ | ✗ | ✗ |
| 100% offline | ✓ | ~ | ~ | ~ |
| No App Store required | ✓ | ✗ | ✗ | ✗ |
| iPhone and Android | ✓ | ✓ | iOS primary | ✓ |
| Dual-axis simultaneous | ✓ Pro | ✗ | ✗ | ✗ |
| Hands-free audio mode | ✓ Pro | Basic beeps | ✗ | ✗ |
| Slideout seal protection | ✓ Pro | ✗ | ✗ | ✗ |
| Pair Mode (two-device display) | ✓ Pro | ✗ | ✗ | ✗ |
| Australian-made | ✓ | ✗ | ✗ | ✗ |
| Cost | Free · Pro $9.99 once | Free / Paid | Free / Subscription | Free |
Are phone apps actually accurate enough?
This comes up every time someone mentions using a phone instead of a dedicated sensor. The answer is yes — and by a comfortable margin — for a motorhome on a campsite.
Your phone's accelerometer measures gravity. On a stationary vehicle, that's a static reading. There's no motion, no vibration, nothing to cause drift. The sensor drift concern that hardware vendors love to raise applies to dynamic applications — navigation, motion tracking — not a parked motorhome.
Most RV fridges and appliances are rated to operate correctly within ±3° of level. A modern smartphone achieves better than 0.5° accuracy on a static reading. That's six times more precise than you actually need.
Do you need the Pro upgrade?
The free tier of OzLevel is genuinely useful — it gives you the millimetre rise reading at each wheel, which is more than any other free option provides. If you already know your ramps well enough to translate "raise 65mm" into a ramp step without help, the free tier may be all you need.
Pro is worth it if:
- You want OzLevel to calculate the exact ramp step for you — no mental arithmetic at the end of a long drive
- You level solo and want hands-free audio guidance so your eyes stay on the wheels
- Your motorhome has a slideout and you want the seal protection bias applied automatically
- You want both roll and pitch solved simultaneously in one reading
At $9.99 AUD once — no subscription, no annual renewal — it's less than a tank of gas and it's there every time you pull into a site for the rest of the time you own your motorhome.
The verdict
For Australian motorhomers, OzLevel is the clear choice. It's the only app in this space built specifically for the motorhome levelling workflow — drive-on ramps, millimetre precision, offline-first, no App Store friction. The free tier beats every competitor on features. Pro is the best $9.99 you'll spend on your rig this year.
The others aren't bad apps — they're just not built for you.