Comparison

Concept Heating 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

Concept Heating

Remotely manage your CONCEPT convection heater from your smartphone or tablet via Wi-Fi. Turn your heater on or off and set your desired temperature from anywhere, ensuring your home is warm when you arrive.

Highlights
  • Remote heater control via Wi-Fi
  • Turn heater on/off
  • Set desired temperature
  • Control from smartphone or tablet
  • Compatible with VT5000 and VT5010 models
Features
Read full description

Access and control your CONCEPT convection heater VT5000 and VT5010 from anywhere with your smartphone or tablet using WIFI signal. You can turn on the heater on your way from work, and after you come home, the place will already be nice and warm. This app allows you to control the heater wherever you are – you can turn the heater on, set the desired temperature, or turn it off.

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

Concept Heating4 screens
Bubble Level4 screens

Verdict

The call

The clearest difference is in-app purchases: Concept Heating at none against Bubble Level's 5. Concept Heating also leads on iOS requirement (8.0 vs 17.6). Bubble Level's advantage is update cadence (every 2 weeks vs every 23 months) and ratings volume (10 vs 1). On price, rating, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Bubble Level sells 5 in-app purchases, starting at $3.99 per month. Concept Heating asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Concept Heating against 4.9 for Bubble Level. That said, the two scores are not equally well evidenced: Bubble Level has 10 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Concept Heating ships an update every 23 months, Bubble Level every 2 weeks. The most recent releases landed on October 3, 2026 and October 5, 2026 respectively.

Scorecard5 real differences · 5 level
Concept Heating versus Bubble Level: the parameters behind the verdict, then further details
ParameterConcept HeatingBubble Level
PriceFreeFree
Rating5.0 (1 ratings) — better4.9 (10 ratings)
Positive reviews8.3% of reviews—
Number of ratings110 — better
Update frequencyEvery 23 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS8.0 — better17.6
Further details — not scored
Size5 MB17 MB
Age rating4+4+
DeveloperJindrich Valenta - ConceptUngo Inc.

Customer experience

Concept Heating

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews12 reviews
Positive8.3%
Neutral0.0%
Negative91.7%

Bubble Level

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

In-app purchases

None

Concept Heating

No in-app purchases

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 Concept Heating free?
Concept Heating is free to download, with no in-app purchases.
Is Bubble Level free?
Bubble Level is free to download, with in-app purchases available.
Which has better reviews, Concept Heating or Bubble Level?
Concept Heating is rated higher. Concept Heating averages 5.0 out of 5 from 1 ratings, while Bubble Level averages 4.9 from 10 ratings.
Do Concept Heating or Bubble Level have ads?
Neither Concept Heating nor Bubble Level shows ads.
Which is updated more often, Concept Heating or Bubble Level?
Concept Heating ships an update every 23 months, and Bubble Level every 2 weeks. Most recently, Concept Heating was updated on October 3, 2026 and Bubble Level on October 5, 2026.

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