Comparison

Bubble Level vs Angle Gauge

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 utility app transforms your iPhone into an accurate bubble level, accounting for real-world phone surfaces like cases and camera bumps. It's ideal for everyday measuring, alignment, and leveling tasks around the house or for DIY projects.

Highlights
  • Bubble level for horizontal and vertical surfaces
  • Calibration for phones with cases and camera bumps
  • Angle and slope measurement
  • Clean, easy-to-read display
  • Fast launch for quick checks
Read full description

Bubble Level - Calibrated turns your iPhone into a practical, accurate bubble level for everyday measuring, alignment, and leveling. Most phones do not sit perfectly flat. Cases, raised camera lens bumps, uneven backs, and different phone shapes can all affect level readings. This tool is designed with proper calibration so you can account for real-world phone surfaces and get more reliable measurements. Use it to check whether a surface is level, measure angles, align objects, or quickly verify slope. It is useful for hanging shelves, setting up furniture, aligning picture frames, checking tables, DIY projects, and quick household measurements. Features: - Bubble level for horizontal and vertical surfaces - Proper calibration for phones with cases and camera bumps - Helps account for uneven phone backs and raised lens areas - Angle and slope measurement - Clean, easy-to-read display - Fast launch for quick checks - Useful for home projects, DIY, furniture setup, construction, and alignment A phone level should work with the phone you actually use — case, camera bump, and all.

About

Angle Gauge

Read full description

Angle Gauge turns the hinge of iPhone Duo into a precision protractor. Set the phone into a corner, against two surfaces or across a joint, and read the angle to a tenth of a degree. MEASURE • Live angle to 0.1°, on the inside display or the outside one • Hold, Auto-Hold when the reading settles, and Zero Here for relative angles • Supplement, bisect and miter angle for every reading • Snap to 1°, 5°, 15° or your own step TARGET • Pick 45°, 90° or any angle with presets and a fine stepper • Haptics build as you get close, then click when you arrive • Tolerance from ±2° down to ±0.25° MATCH • Capture angles into a named library • Find them again later, by feel LEVEL • Bubble level when the phone lies flat, line level on its edge • Two-step calibration cancels the camera bump and the slope of your table • On iPhone Duo, read the hinge relative to true level ON EVERY IPHONE The level works on any iPhone. Measure, Target and Match read the hinge, so they need iPhone Duo with iOS 27.1 or later. BUILT LIKE AN INSTRUMENT • Two-point hinge calibration against fully closed and flat • Degrees, radians or percent open • VoiceOver, Reduce Motion, light and dark • No accounts, no ads, no tracking, and it never goes online

Screenshots

Bubble Level2 screens
Angle Gauge4 screens

Verdict

The call

The clearest difference is in-app purchases: Angle Gauge at none against Bubble Level's 1. Bubble Level's advantage is iOS requirement (17.6 vs 27.0). On price, 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 1 one-off in-app purchase. Angle Gauge asks for nothing beyond the download.

Scorecard2 real differences · 7 level
Bubble Level versus Angle Gauge: the parameters behind the verdict, then further details
ParameterBubble LevelAngle Gauge
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 10 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone
Requires iOS17.6 — better27.0
Further details — not scored
Size2 MB1 MB
Age rating4+4+
DeveloperYUNFEI XUJared Kaeb

In-app purchases

1 purchases

Bubble Level

One-time1
  • Premium$1.99
None

Angle Gauge

No in-app purchases

Questions

Is Bubble Level free?
Bubble Level is free to download, with in-app purchases available.
Is Angle Gauge free?
Angle Gauge is free to download, with no in-app purchases.
Do Bubble Level or Angle Gauge have ads?
Neither Bubble Level nor Angle Gauge shows ads.

Other comparisons