Comparison

Bubble Level vs Edge Ruler

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Bubble Level

This app provides precise digital measurements for leveling and angle detection, acting as a spirit level, ruler, and laser tool. It helps with various tasks like furniture assembly, hanging decor, and construction projects, offering real-time feedback and the ability to save and share measurements.

Highlights
  • Precise spirit level with 0.1 degree accuracy
  • Integrated laser measurement tool
  • Digital ruler for length measurement
  • Save, note, and export measurements
  • Customizable themes and settings
  • Offline functionality
Features
Read full description

Professional-grade spirit level, bubble level, and precision angle measurement toolkit right in your pocket. Replace bulky hardware tools with digital accuracy, camera-based laser leveling, and real-time surface telemetry. Turn your iPhone or iPad into an advanced machinist and carpenter toolkit for home improvement, construction, and DIY projects. KEY FEATURES PRECISION SPIRIT & BUBBLE LEVEL • Horizontal & Vertical Tube Levels with 0.1° high-precision readout • 360° Circular Bullseye Level for multidirectional surface leveling • Real-time X (Roll) and Y (Pitch) digital telemetry • Dual measurement modes: Angle (Degrees °) and Slope (Percent %) • Real-time RMS Stability Telemetry for vibration analysis • 100% Offline operation — no internet connection required NEW: CAMERA BUMP COMPENSATION (Pro Hardware Calibration) • Eliminates false tilt angles caused by protruding iPhone camera lenses • Automatically restores true 0.0° balance when placed flat on tables • One-tap presets for Slim/No Case (0.9°), Standard Case (1.2°), and Rugged Cases (1.6°) ACTION BUTTON & SIRI SHORTCUTS • Full Apple Action Button integration for iPhone 15 Pro, 16, and 17 series • Instant single-click hardware launch for Spirit Level, Laser, or Ruler • Hands-free voice triggers with Siri Shortcuts ("Open Bubble Level Laser") • Control Center Quick Launch support CAMERA LASER LEVEL (AR Tool) • Visual laser line projection via your camera feed • Perfect for picture frame alignment, wall mounting, and tile installation • Live angle detection with instant leveling feedback DIGITAL RULER & CALIPER • On-screen digital ruler with Metric (cm/mm) and Imperial (inch) scales • Dual precision measurement markers for exact object dimensions • Scratch-free high-contrast display MEASUREMENT MANAGEMENT & EXPORT • Save angle and dimension records with custom labels and timestamps • Export and share measurement history in CSV format • One-tap zero calibration for relative angle measurements PROFESSIONAL INDUSTRIAL DESIGN • High-contrast Neo-Brutalist Machinist interface for outdoor visibility • Tactile haptic feedback vibration upon reaching perfect balance (0.0°) • Keep-Screen-On toggle during long measurement sessions • Custom theme support IDEAL FOR: - Hanging paintings, wall decor, TVs, and mirrors - Furniture assembly, cabinet making, and shelving - Home renovation, drywall, and masonry projects - Table, appliance, and RV/camper leveling - Professional carpentry, construction, and engineering - Photography and tripod angle alignment Download now and transform your device into an indispensable, professional measurement toolkit! Note: Measurement precision relies on device internal sensors (gyroscope and accelerometer). Regular calibration is recommended for optimal accuracy. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://malevus.com/privacy-policy-for-spirit-level-app/

About

Edge Ruler

Features
Read full description

Edge Ruler turns iPhone and iPad into a ruler that measures from the device corner. Hold the corner against an object, read length and width. No camera trick, no guessing: the app knows, for every device, the distance from the housing edge to the first pixel and draws the scale to the millimeter. Two corner rulers in opposite corners, two measuring lines with handles that lock when released, values in cm, inches with fractions or 寸. With Calibrate you place a bank card or coin on a real-size template and see at once whether everything lines up; bezel values can be adjusted in tenths of a millimeter. Five school worlds as outfits: grid paper and clear ruler like a German pencil case, yellow wooden ruler on wide-ruled paper like in the US, 田字格 with a tinted student ruler like in China, Seyès notebook with a “double décimètre” like in France, “cuadrícula” with a “regla” like in Spain. Paper, ruler, line color and unit combine freely. The basic ruler is free. Everything else can be tried for 14 days and then unlocked once: your region's outfit with second scale, rotating numbers, all four zero corners, movable zero, measurement table and inclinometer, or all five school worlds at once. Accurate to about 0.3 mm on calibrated models; not a certified measuring instrument. No data collected, no account, no internet.

Screenshots

Bubble Level4 screens
Edge Ruler4 screens

Verdict

The call

Bubble Level and Edge Ruler are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Bubble Level sells 4 in-app purchases, starting at $3.99 per month and Edge Ruler sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Bubble Level versus Edge Ruler: the parameters behind the verdict, then further details
ParameterBubble LevelEdge Ruler
PriceFreeFree
Rating4.8 (13 ratings) — better—
Number of ratings13 — better—
Update frequencyEvery 2 weeks—
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.0 — better
Further details — not scored
Size17 MB1 MB
Age rating4+4+
DeveloperUngo Inc.Theater der Zeit

In-app purchases

4 purchases

Bubble Level

Subscriptions3
  • Bubble Level Premium3 Days trial$3.991 Month
  • Premium Weekly$4.997 Days
  • Remove All Ads$39.991 Year
One-time1
  • Bubble Level Lifetime$39.99
3 purchases

Edge Ruler

One-time3
  • 14-day TrialFree
  • Regional Outfit$1.99
  • All Outfits$1.99

Questions

Is Bubble Level free?
Bubble Level is free to download, with in-app purchases available.
Is Edge Ruler free?
Edge Ruler is free to download, with in-app purchases available.
Do Bubble Level or Edge Ruler have ads?
Neither Bubble Level nor Edge Ruler shows ads.

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