RoofCalc vs Leveler Plus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RoofCalc
This app assists roofing and framing carpenters with complex calculations for various roof types and stud walls. It offers metric and imperial unit conversion, a standard calculator, and the ability to share results via email or message. Optimized for iPhones and iPads, it's designed for ease of use by construction professionals.
- Hipped, gabled, and single-pitch roof calculations
- Stud wall calculations and estimating
- Metric and imperial unit conversion
- Standard calculator and quick converter
- Print, email, or message results
- Default value settings
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Roofing and Framing carpentry Calculator. Developed by carpenters and used by professional carpenters, contractors, builders and other construction professionals around the world. An indispensable roof tool for roofing construction. Easy to use - no complex steps to remember. Set default values for the most commonly used values. Metric and imperial at the touch of a button. CALCULATIONS INCLUDE : Hipped, gabled and single-pitch roofs: ◆ Lengths ; ◆ Angles; ◆ Heights; ◆ layout; ◆ Birdsmouth ◆ Pitch (various); ◆ Roof Pitch Factor; ◆ Adjust calculations for a plate higher on one side; ◆ Roof surfaces ; ◆ Stud Wall Calculations & Estimating ; ◆ Other timber layouts ; ALSO:- ◆Easy-to-use standard calculator - common functions for quick calculation. ◆ Quick converter - lengths, areas, volumes: Metric and US/Imperial ◆ Print, email or message lists and even take notes on the first ; Optimised for all iPhones and iPads in portrait mode. INFOGUIDE : Infoguide is part of a small construction company based in Western Australia and this app was created by a former carpenter for our team of carpenters. We use it and believe it will be as useful to other carpenters as it has been to us. Terms of Service: http://www.apple.com/legal/itunes/appstore/dev/stdeula
Leveler Plus
Transform your device into a precise digital spirit level. Measure tilt angles in real-time with realistic bubble and digital displays. Features calibration, saved readings with notes, and haptic feedback for perfect alignment.
- Real-time angle measurement
- Bubble and digital display modes
- Calibration system
- Save and organize angle readings
- Haptic feedback
- Portrait and landscape orientation
- Grid overlay
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Turn your iPhone into a precision digital spirit level. Leveler uses your device's built-in gyroscope and accelerometer to measure tilt angles in real time — perfect for construction, woodworking, DIY projects, and everyday tasks. BUBBLE LEVEL A realistic bubble moves within a circular level, just like a traditional spirit level. When the surface is perfectly level, the bubble snaps to center and glows green with haptic feedback confirmation. DIGITAL LEVEL View precise X and Y angle readings with large, easy-to-read numbers. Horizontal and vertical bar indicators give you a quick visual reference for alignment. KEY FEATURES • Real-time angle measurement updated 60 times per second • Bubble and digital display modes • Calibration system — set any surface as your zero reference • Save and organize unlimited angle readings with notes • Haptic feedback when level is achieved • Works in portrait and landscape orientation • Grid overlay for enhanced visual precision • Dark interface designed for job site visibility SAVE & ORGANIZE Tap to save any reading with automatic timestamps. Add custom names and notes to keep your measurements organized. Review, rename, or delete saved records anytime. CALIBRATE WITH CONFIDENCE One-tap calibration lets you set your current position as the zero reference point. Calibrate on a known level surface for maximum accuracy. Reset calibration anytime to return to factory defaults. BUILT FOR PROFESSIONALS & DIY Whether you're hanging picture frames, leveling furniture, checking floor slopes, aligning shelves, or working on a construction site — Leveler gives you the precision you need, right in your pocket. No ads. No subscriptions. No internet required. Thank you for your support! Visit nitrio.com for more apps for your iOS devices.
Screenshots
Verdict
The clearest difference is price: RoofCalc at Free against Leveler Plus's $2.99. RoofCalc also leads on update cadence (monthly vs every 17 months) and ratings volume (12 vs 1). Leveler Plus's advantage is rating (5.0 vs 3.8) and in-app purchases (none vs 2). On ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
RoofCalc is free to download; Leveler Plus costs $2.99 up front. RoofCalc sells 2 in-app purchases, starting at $1.99 per month. Leveler Plus asks for nothing beyond the download.
Leveler Plus holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: RoofCalc has 12 ratings behind it against 1, so its average is the more settled of the two.
RoofCalc ships an update monthly, Leveler Plus every 17 months. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.
| Parameter | RoofCalc | Leveler Plus |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 3.8 (12 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 20.0% of reviews | — |
| Number of ratings | 12 — better | 1 |
| Update frequency | Monthly — better | Every 17 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 17.6 — better |
| Further details — not scored | ||
| Size | 24 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Infoguide Pty Ltd | Heng Jia Liang |
Customer experience
RoofCalc
Leveler Plus
In-app purchases
RoofCalc
- Monthly$1.991 Month
- Annual$12.991 Year
Leveler Plus
No in-app purchases









