Bubble Level Tool vs Goniometer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Measure current device angle
- Reset angle
- Lock angle
- Portrait mode
- Landscape mode
- Surface level
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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.
Goniometer
Easily record joint motion range using Bluetooth connection with a digital goniometer. Track personal rehabilitation training progress for joint movement. Remember to consult a doctor before making medical decisions.
- Bluetooth connectivity with digital goniometer
- Record joint range of motion
- Track personal rehabilitation status
- Monitor joint movement progress
- Easy data recording
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The app use bluetooth connect with GR digital goniometer to record the angle range of joint motion easily. It can track record personal rehabilitation training status of joint motion. APP可通过蓝牙与GR数显角度尺连接并记录关节活动度的测量数据，帮助追踪个人康复训练情况。多一份准备，少一分担心，精准记录关节活动康复进度。 Disclaimer reminding：users to seek a doctor’s advice in addition to using this app and before making any medical decisions. 免责声明提醒：用户除了使用此应用程序外，在做出任何医疗决定之前，还应寻求医生的建议。
Screenshots
Verdict
The clearest difference is rating: Bubble Level Tool at 4.4 against Goniometer's 1.0. Bubble Level Tool also leads on ratings volume (2.5K vs 2) and update cadence (weekly vs monthly). Goniometer's advantage is in-app purchases (none vs 9) and iOS requirement (12.0 vs 15.0). On price, review sentiment, 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
Both are free to download. Bubble Level Tool sells 9 in-app purchases, starting at $3.99 per 7 days. Goniometer asks for nothing beyond the download.
Bubble Level Tool holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Bubble Level Tool has 2.5K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 6% of Bubble Level Tool's written reviews are positive against 0% of Goniometer's.
Bubble Level Tool ships an update weekly, Goniometer monthly. The most recent releases landed on October 10, 2026 and September 27, 2026 respectively.
| Parameter | Bubble Level Tool | Goniometer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (2.5K ratings) — better | 1.0 (2 ratings) |
| Positive reviews | 6.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 2.5K — better | 2 |
| Update frequency | Weekly — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Subscription | Free — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Rihab Mehboob | GemRed |
Customer experience
Bubble Level Tool
Goniometer
Bugs and 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
Goniometer
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Bubble Level Tool
- Bubble 1 Week$3.997 Days
- Bubble 1 Week$4.997 Days
- Bubble 1 Month3 Days trial$5.991 Month
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- 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
- Bubble Lifetime$17.99
- Bubble Lifetime$69.99
Goniometer
No in-app purchases
Questions
Is Bubble Level Tool free?
Is Goniometer free?
Which has better reviews, Bubble Level Tool or Goniometer?
Do Bubble Level Tool or Goniometer have ads?
Which is updated more often, Bubble Level Tool or Goniometer?
Other comparisons
