Protractor+ vs mini Bubble Level
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Protractor+
Transform your device into a versatile angle measurement tool. Easily measure angles in both degrees and radians with an intuitive interface. Ideal for quick and precise angle readings.
- Angle measurement
- Degrees and radians
- Intuitive visual control
- Elegant design
- Pocket protractor functionality
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Protractor helps you to measure angles quickly and easily. This app turn your iPhone into a handy pocket protractor that can measure angles in both degrees and radians. Features: - Elegant design - Measure in degrees and radians - Intuitive visual control
mini Bubble Level
This app provides accurate horizontal and vertical angle measurements using your device's sensors. It helps with alignment tasks, offers haptic feedback, and supports dark mode for comfortable use in various environments.
- Precise angle measurements
- Reference point marking
- Haptic feedback for alignment
- Dark mode support
- Intuitive interface
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Professional and user-friendly spirit-level app. Accurately measure horizontal and vertical angles, set reference points, and receive haptic feedback for perfect alignment. It is ideal for furniture assembly, photography, or home renovation. Enjoy comfortable use in any environment with the support of dark mode and an intuitive interface. Features include precise angle measurements, reference point marking, haptic feedback for alignment, and a clean, modern design suitable for professionals and DIY enthusiasts.
Screenshots
Verdict
The clearest difference is review sentiment: mini Bubble Level at 73% against Protractor+'s 15%. mini Bubble Level also leads on rating (4.6 vs 4.1) and in-app purchases (none vs 1). Protractor+'s advantage is ads (none vs shown) and ratings volume (10K vs 26). On price, update cadence 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. Protractor+ sells 1 one-off in-app purchase. mini Bubble Level asks for nothing beyond the download.
mini Bubble Level holds the better App Store score, 4.6 against 4.1. That said, the two scores are not equally well evidenced: Protractor+ has 10K ratings behind it against 26, so its average is the more settled of the two. Written reviews point the same way: 15% of Protractor+'s written reviews are positive against 73% of mini Bubble Level's.
Protractor+ ships an update every 2 months, mini Bubble Level every 3 months. The most recent releases landed on September 25, 2026 and June 10, 2026 respectively.
| Parameter | Protractor+ | mini Bubble Level |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (10K ratings) | 4.6 (26 ratings) — better |
| Positive reviews | 14.9% of reviews | 72.7% of reviews — better |
| Number of ratings | 10K — better | 26 |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Tue Nguyen Minh | Mert TUZER |
Customer experience
Protractor+
mini Bubble Level
Bugs and requests
Protractor+
Reported bugs
3 issues- Camera feature not working as expected
- Angle measurements not accurate
- Frequent app crashes
Requested features
3 requests- Ability to measure in degrees without upgrade
- Improved accuracy and responsiveness
- Removal of timeouts and paywalls
mini Bubble Level
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Protractor+
- Pro Features$1.99
mini Bubble Level
No in-app purchases
Questions
Is Protractor+ free?
Is mini Bubble Level free?
Which has better reviews, Protractor+ or mini Bubble Level?
Do Protractor+ or mini Bubble Level have ads?
Which is updated more often, Protractor+ or mini Bubble Level?
Other comparisons
