Bubble Level + Compass vs Robotics NLK
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bubble Level + Compass
This utility app provides a precise bubble level for horizontal, vertical, and surface angle measurements, along with a true-north compass. It offers advanced calibration options and works on iOS devices. A Pro version is available for additional features.
- Horizontal and vertical level measurements
- Surface angle readings
- True north compass
- Advanced calibration
- Magnetic declination reading
- Accelerometer/Gyro switch
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Bubble Level + Compass combines a bubble level and a compass, with advanced controls for users who want more than the basics. Use it to check horizontal/vertical/surface angles, or get compass direction relative to either true or magnetic north. For users who work with physical compasses, magnetic declination is also provided to convert magnetic readings to true north readings. The level includes gyroscope calibration, which is especially useful on phones with a raised camera bump or an uneven back/case. No nagging popups or interruptions. The free version only includes a small banner ad at the bottom. Features • Bullseye level plus horizontal and vertical levels with 0.1 degree precision. • Compass with true north and magnetic north. • Magnetic declination display for converting magnetic readings to true north readings. • Gyroscope calibration for phones that do not rest perfectly flat. • Gyro or accelerometer sensor mode. • Clean interface with no popup interruptions. If you enjoy the app, leaving a review would help. An ad-free Pro version is also available, with more features including Apple Watch support, night mode, slope/inclination %, and pitch, yaw, and roll rotation rate.
Robotics NLK
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Robotics NLK is an app letting you configure custom missions, relying on iPhone/iPad sensors. The goal is to get maximum out of your iOS device, with maximum flexibility and configurability. In the nearest future it will be possible to order BLE/WiFi accessories making your missions even more powerful, transforming your mobile device into a robot. ** Features ** * Synced Maps * - Compare Maps keeping them in Sync - while moving position on one map - synced maps will move as well. GEOINT tool. - Support for default maps as well as OpenStreetMap, OpenTopoMap - with caching mechanism - so that cached map tiles are operational offline. * Configurable Tabata Timer * - Super flexible Tabata Timer - with actions like pronouncing phrases, or vibrating. Configured as Nodes. - This lets you setup any custom workout with voice commands guidance. * GPS Track Recorder * - Record your GPS Track, Run Track, Hike Track. The GeoJSON is recorded. - Export or View the GeoJSON track over the Map. - Visualise the tracks as a beautiful FlyOver Video for sharing. * iCloud Baby Monitor / Security Camera * - Capture slideshow images on first device with your iCloud active. - Read slideshow images using another device with your iCloud active. Syncs approximately each 10 seconds. - Secure data transfer via your iCloud between your devices. No external servers get access to your data. * WiFi/BLE Baby Monitor / Security Camera * - Capture slideshow images on one device, which will broadcast it via your Local Network. - Receive slideshow images on another device in the same Local Network. Syncs approximately each second. - Secure data transfer via your Local Network between several RNLK app installations. * REST API cURL Calls * - Call any url at any event in the mission - by triggering a cURL.
Screenshots
Verdict
The clearest difference is in-app purchases: Bubble Level + Compass at none against Robotics NLK's 1. Bubble Level + Compass also leads on iOS requirement (12.0 vs 15). Robotics NLK's advantage is ads (none vs shown). 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. Robotics NLK sells 1 one-off in-app purchase. Bubble Level + Compass asks for nothing beyond the download.
Bubble Level + Compass ships an update every 4 months, Robotics NLK every 2 months. The most recent releases landed on November 13, 2026 and November 8, 2026 respectively.
| Parameter | Bubble Level + Compass | Robotics NLK |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (35 ratings) — better | — |
| Positive reviews | 90.5% of reviews | — |
| Number of ratings | 35 — better | — |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15 |
| Further details — not scored | ||
| Size | 18 MB | 372 MB |
| Age rating | 4+ | 4+ |
| Developer | Dimitrios Kechagias | Ievgen Naloiko |
In-app purchases
Bubble Level + Compass
No in-app purchases
Robotics NLK
- Private Mode - No Event Logging$9.99
Questions
Is Bubble Level + Compass free?
Is Robotics NLK free?
Do Bubble Level + Compass or Robotics NLK have ads?
Which is updated more often, Bubble Level + Compass or Robotics NLK?
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