Comparison

Angles vs Bubble Level Tool

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

Head to head
About

Angles

This tool allows users to measure angles within videos, either captured live or imported from their library. It supports frame-by-frame analysis and exporting data for further calculations. Designed for rehabilitation professionals.

Highlights
  • Measure angles in videos
  • Capture or import video
  • Frame-by-frame video analysis
  • Point selection and manipulation
  • Export data to spreadsheet (.xlsx)
  • Adjustable angle label display
Features
Read full description

This goniometer tool can be used to measure angles at various times in a video. Designed for rehabilitation professionals. Features: • Capture new videos or import existing videos from your library • Step frame-by-frame through a video, or drag the slider to seek to a specific time • Select points and drag them into place • Lines and angle measurements automatically appear, connecting the points • Repeat with more frames, points, and angles • Export to spreadsheet (.xlsx format) for further calculations and analysis (note that there are multiple worksheets - one with raw point coordinates, and one with angle measurements) Make sure to capture your video directly perpendicular to your subject, with the camera level in all planes, and without panning the camera. The display of angle labels can be turned on/off in the app's preferences, found in the Settings app. App developer: Nathaniel J. Cochran, in collaboration with Regina Harbourne Supported by Duquesne University, Physical Therapy Dept. in the Rangos School of Health Sciences Developed in part to support a grant from the Institute of Education Sciences, US Dept. of Education

About

Bubble Level Tool

Measure precise angles and levels with your device. Easily switch between portrait, landscape, and surface level modes. Lock and reset angles for accurate measurements.

Highlights
  • Measure current device angle
  • Reset angle
  • Lock angle
  • Portrait mode
  • Landscape mode
  • Surface level
Read full description

Bubble Level Tool - Digital lets you see the current angle of your device, along with reseting and locking the angle too. Tilt the device to measure the precise angle and easily switch between portrait, landscape & surface level. If you have any questions or feedback, I'm all ears. Bubble Level Tool - Digital was created by an individual in his free time, and I’d love to know what you think. I’m available through Twitter @elohohel & Mastodon @elohohel@mastodon.social. Terms of Use (EULA) - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ A subscription / purchase is required to continue using the app.

Screenshots

Angles4 screens
Bubble Level Tool4 screens

Verdict

The call

The clearest difference is price: Bubble Level Tool at Free against Angles's $0.99. Bubble Level Tool also leads on update cadence (weekly vs every 4 months) and ratings volume (2.5K vs 5). Angles's advantage is in-app purchases (none vs 9) and review sentiment (27% vs 6%). 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

CostPrice · In-app purchases · Ads · Monetization

Bubble Level Tool is free to download; Angles costs $0.99 up front. Bubble Level Tool sells 9 in-app purchases, starting at $3.99 per 7 days. Angles asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Bubble Level Tool holds the better App Store score, 4.4 against 4.2. That said, the two scores are not equally well evidenced: Bubble Level Tool has 2.5K ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 27% of Angles's written reviews are positive against 6% of Bubble Level Tool's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Angles ships an update every 4 months, Bubble Level Tool weekly. The most recent releases landed on September 20, 2026 and October 1, 2026 respectively.

Scorecard8 real differences · 2 level
Angles versus Bubble Level Tool: the parameters behind the verdict, then further details
ParameterAnglesBubble Level Tool
Price$0.99Free — better
Rating4.2 (5 ratings)4.4 (2.5K ratings) — better
Positive reviews26.7% of reviews — better6.0% of reviews
Number of ratings52.5K — better
Update frequencyEvery 4 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid — betterSubscription
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS9.3 — better15.0
Further details — not scored
Size22 MB5 MB
Age rating4+4+
DeveloperNathaniel CochranRihab Mehboob

Customer experience

Angles

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews15 reviews
Positive26.7%
Neutral6.7%
Negative66.7%

Bubble Level Tool

All ratings2,466 ratings
Positive84.6%
Neutral2.4%
Negative13.0%
Written reviews134 reviews
Positive6.0%
Neutral0.0%
Negative94.0%

Bugs and requests

Angles

Not enough reviews yet to summarise bugs or requests.

Bubble Level Tool

Reported bugs

2 issues
  • Inaccurate level readings
  • Compatibility issues with older devices

Requested features

3 requests
  • Percentage slope display option
  • Ability to switch between degree and percent
  • Refund/cancellation options

In-app purchases

None

Angles

No in-app purchases

9 purchases

Bubble Level Tool

Subscriptions7
  • Bubble 1 Week$3.997 Days
  • Bubble 1 Week$4.997 Days
  • Bubble 1 Month3 Days trial$5.991 Month
Show 4 more
  • Bubble 1 Month$9.991 Month
  • Bubble 1 Year3 Days trial$24.991 Year
  • Bubble 6 Months$29.996 Months
  • Bubble 1 Year3 Days trial$39.991 Year
One-time2
  • Bubble Lifetime$17.99
  • Bubble Lifetime$69.99

Questions

Is Angles free?
Angles costs $0.99, with no in-app purchases.
Is Bubble Level Tool free?
Bubble Level Tool is free to download, with in-app purchases available.
Which has better reviews, Angles or Bubble Level Tool?
Bubble Level Tool is rated higher. Angles averages 4.2 out of 5 from 5 ratings, while Bubble Level Tool averages 4.4 from 2.5K ratings.
Do Angles or Bubble Level Tool have ads?
Neither Angles nor Bubble Level Tool shows ads.
Which is updated more often, Angles or Bubble Level Tool?
Angles ships an update every 4 months, and Bubble Level Tool weekly. Most recently, Angles was updated on September 20, 2026 and Bubble Level Tool on October 1, 2026.

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