Protractor vs Boilon
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Protractor
Measure angles precisely using your phone's screen, gyroscope, or camera. Offers smart presets, real-time feedback with high accuracy, and calibration features to adapt to various situations.
- 3-in-1 measurement modes
- Smart angle presets with alerts
- Hyper-responsive feedback (≤0.5° accuracy)
- Auto dynamic compensation calibration
- Anti-shake technology for motion scenes
- Screen lock for measurements
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Ditch bulky tools! Measure angles precisely anywhere with just your phone. *** Features *** ► Full-Scene Precision Measurement * 3-in-1 Modes: Screen Protractor / Gyroscope Protractor/ Camera Protractor, adapt to different scenarios. * Smart Angle Preset: Input target angles for instant deviation alerts. * Hyper-Responsive Feedback: Real-time tracking with ≤0.5° accuracy. ► Triple-Calibration Assurance * Auto Dynamic Compensation: Device-position-aware baseline calibration * Anti-Shake Tech: 80% accuracy boost in motion scenes (Gyroscope Mode) * Screen lock: Freeze measurements instantly to prevent accidental touches. ► Contact Us * Email: ceo@noadit.com
Boilon
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Boilon helps you set up, pair, and manage compatible AI audio chat devices from one place. With Boilon you can: • Pair nearby devices over Bluetooth • Bind devices with a verification code • Manage connected devices and device details • Browse AI companion templates and switch each device's character • Customize voices, chat history, and device features • Manage subscriptions and add-ons in app • Update language and review privacy settings Boilon is designed for compatible Boilon hardware. Some features, including Bluetooth pairing and device management, require a supported Boilon device.
Screenshots
Verdict
The clearest difference is in-app purchases: Boilon at none against Protractor's 6. Boilon also leads on update cadence (daily vs every 5 weeks) and iOS requirement (15.1 vs 17.0). 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
Both are free to download. Protractor sells 6 in-app purchases, starting at $4.99 per month. Boilon asks for nothing beyond the download.
Protractor ships an update every 5 weeks, Boilon daily. The most recent releases landed on October 2, 2026 and October 9, 2026 respectively.
| Parameter | Protractor | Boilon |
|---|---|---|
| Price | Free | Free |
| Rating | 1.8 (6 ratings) — better | — |
| Positive reviews | 63.6% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 5 weeks | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 7 MB | 81 MB |
| Age rating | 4+ | 4+ |
| Developer | Noadit, Inc. | Beijing Tengxiu Chuangzhi Technology Co., Ltd |
In-app purchases
Protractor
- VIP3 Days trial$4.991 Month
- Bubble Tea$0.99
- Sponsor$4.99
- Coffee$4.99
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- Sponsor$19.99
- Sponsor$99.99
Boilon
No in-app purchases
