Comparison

Smart Tools vs Bubble Level

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

Head to head
About

Smart Tools

This comprehensive utility app provides 31 essential tools and gauges, leveraging your device's sensors. It includes measurement tools, a light, a magnifier, and various sensors for construction, carpentry, and everyday use.

Highlights
  • 31 carpenter, construction, and gauge tools
  • Bubble level and laser level
  • Stud finder and dB meter
  • Ruler, protractor, and magnifier
  • Speed gun and distance meter
  • Unit converter and code reader
Features
Read full description

Meet the largest iOS toolbox kit with 31 carpenter, construction and other tools and gauges like bubble level (spirit level), laser level, stud finder, dB meter, protractor (angle meter)... Use device's in-built sensors in all in one toolbox app, handy like a Swiss army knife. Carpenter and construction toolbox: Ruler; Bubble level (Spirit level); Laser level; Light: Manual torch light, strobe light, light show; Protractor (angle meter) with plumb bob; Magnifier. Gauges toolbox: dB meter with frequency spectrum; Distance and height meter; Speed gun (speed meter); Stopwatch; Metal detector (stud finder); Vibration meter; Luminosity meter; Color sensor; Cardiograph (heart rate meter); Speedometer. Other handy tool kit: Unit converter: Also includes currency converter; Code reader: QR code and bar code; Accelerometer; Night vision; Dog whistle; Metronome; Pitch tuner; Counter; Random generator; Pedometer; Body mass index; Period tracker; Translator. Free kit with advertisement, optional removal with paid upgrade.

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/

Screenshots

Smart Tools4 screens
Bubble Level4 screens

Verdict

The call

The clearest difference is ads: Bubble Level at none against Smart Tools's shown. Bubble Level also leads on update cadence (every 2 weeks vs every 3 months) and rating (4.9 vs 4.5). Smart Tools's advantage is ratings volume (314 vs 10) and iOS requirement (11.0 vs 17.6). On price, in-app purchases, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Smart Tools sells 1 one-off in-app purchase and Bubble Level sells 5 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Bubble Level holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: Smart Tools has 314 ratings behind it against 10, so its average is the more settled of the two.

UpkeepUpdate frequency

Smart Tools ships an update every 3 months, Bubble Level every 2 weeks. The most recent releases landed on September 19, 2026 and September 18, 2026 respectively.

Scorecard5 real differences · 5 level
Smart Tools versus Bubble Level: the parameters behind the verdict, then further details
ParameterSmart ToolsBubble Level
PriceFreeFree
Rating4.5 (314 ratings)4.9 (10 ratings) — better
Positive reviews77.9% of reviews—
Number of ratings314 — better10
Update frequencyEvery 3 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better17.6
Further details — not scored
Size24 MB17 MB
Age rating4+4+
DeveloperMatjaz MaroltUngo Inc.

Customer experience

Smart Tools

All ratings314 ratings
Positive88.2%
Neutral7.3%
Negative4.5%
Written reviews68 reviews
Positive77.9%
Neutral8.8%
Negative13.2%

Bubble Level

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Smart Tools

Reported bugs

11 issues
  • App crashes on startup with advertising splash screen
  • Metronome causes app to force close
  • Night vision not working properly
  • Translator feature not functioning
  • Conversion tools not working
Show 6 more
  • Cardiograph readings inaccurate without finger on camera
  • Body fat measurement tool returns to settings
  • Mirror feature disappeared
  • Settings menu crashes on iPad
  • Some tools don't light up or display correctly
  • Currency conversion data outdated

Requested features

14 requests
  • Dark mode matching system settings
  • Calculator tool
  • Compass feature
  • Stud finder functionality
  • Temperature conversion
Show 9 more
  • Smaller volume units (teaspoons, tablespoons)
  • Speedometer in miles per hour (MPH)
  • Mirror tool restoration
  • Proximity warning with audible alarm
  • Screenshot and share functionality
  • Notes tool
  • Customizable tool order/sorting
  • Better UI redesign
  • Landscape mode support

Bubble Level

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Smart Tools

One-time1
  • Remove advertisement$2.99
5 purchases

Bubble Level

Subscriptions4
  • Bubble Level Premium7 Days trial$3.991 Month
  • Weekly Premium$3.997 Days
  • Bubble Level Weekly3 Days trial$4.997 Days
Show 1 more
  • Remove All Ads$19.991 Year
One-time1
  • Bubble Level Lifetime$39.99

Questions

Is Smart Tools free?
Smart Tools is free to download, with in-app purchases available.
Is Bubble Level free?
Bubble Level is free to download, with in-app purchases available.
Which has better reviews, Smart Tools or Bubble Level?
Bubble Level is rated higher. Smart Tools averages 4.5 out of 5 from 314 ratings, while Bubble Level averages 4.9 from 10 ratings.
Do Smart Tools or Bubble Level have ads?
Smart Tools shows ads; Bubble Level does not.
Which is updated more often, Smart Tools or Bubble Level?
Smart Tools ships an update every 3 months, and Bubble Level every 2 weeks. Most recently, Smart Tools was updated on September 19, 2026 and Bubble Level on September 18, 2026.

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