Crazyflie 2 vs RTAB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Crazyflie 2
Control a palm-sized, open-source quadcopter directly from your iOS device. Utilize on-screen joysticks or phone tilting for flight. Customize control sensitivity and modes, and update the drone's firmware.
- Bluetooth low energy connectivity
- On-screen joystick controls
- Phone tilting flight control
- Configurable control sensitivity
- Configurable control modes
- Firmware updates
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Control Crazyflie 2.x directly from your iOS device using Bluetooth low energy. The Crazyflie 2 is a flying open source development platform in the form of a palm sized quadcopter. The platform supports hardware expansions as well as advanced software features for development. This app requires a Crazylfie with a recent firmware. Firmware >= 2024.02 are compatible. Functionalities: - Connect to a Crazyflie 2.0 using BLE - Control a Crazyflie 2.0 using on-screen joysticks or by tilting the phone - Configurable control sensitivity - Configurable control mode - Update the Crazyflie firmware with latest version
RTAB
This utility app enables real-time 3D scanning and mapping of environments using LiDAR or RGB-D sensors. It features online loop closure detection and map optimization for immediate feedback, with export options for various 3D formats.
- Online 3D scanning and mapping
- Loop closure detection and map correction
- Save maps in DB format
- Export in PLY, LAS, or OBJ
- Multi-session mapping
- AR/VR visualization mode
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RTAB-Map (Real-Time Appearance-Based Mapping) is an Open Source LiDAR / RGB-D / Stereo Graph-Based SLAM (Simultaneous Localization and Mapping) approach based on an online incremental appearance-based loop closure detector. The loop closure detector uses a bag-of-words approach to determinate how likely a new image comes from a previous location or a new location. When a loop closure hypothesis is accepted, a new constraint is added to the map's graph, then a graph optimizer minimizes the errors in the map in real-time. An optional memory management approach can be used to limit the number of locations used for loop closure detection and graph optimization, so that real-time constraints on large-scale environnements are always respected. ARKit's visual inertial odometry (VIO) is used as the SLAM front-end for RTAB-Map (the SLAM back-end). * Note that unlike other scanning apps that optimize the map only after mapping, with RTAB-Map you get loop closure detection and map optimization online so you can have a live feedback to know when you have enough constraints in the map for good global optimization before stopping the scan. *** 3D reconstruction available only with LiDAR sensor. Features: * Online 3D scanning/mapping of the environment. * Online loop closure detection and map correction. * Save in DB format (RTAB-Map desktop and rtabmap_ros format). * Export in PLY, LAS or OBJ. * Multi-session mapping (save and continue later). * Use Apriltags to help finding loop closures in textureless environments. * Mixed AR/VR First-Person in visualization mode. * Raw ARKit data recording (up to 60 Hz!), useful to record long sessions without comprising battery life.
Screenshots
Verdict
The clearest difference is review sentiment: RTAB at 100% against Crazyflie 2's 50%. RTAB also leads on rating (4.8 vs 2.7) and update cadence (every 5 months vs every 13 months). Crazyflie 2's advantage is iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
RTAB holds the better App Store score, 4.8 against 2.7. That said, the two scores are not equally well evidenced: RTAB has 42 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 50% of Crazyflie 2's written reviews are positive against 100% of RTAB's.
Crazyflie 2 ships an update every 13 months, RTAB every 5 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | Crazyflie 2 | RTAB |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (6 ratings) | 4.8 (42 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 6 | 42 — better |
| Update frequency | Every 13 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 8 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Bitcraze | Mathieu Labbe |
Customer experience
Crazyflie 2
RTAB
In-app purchases
Crazyflie 2
No in-app purchases
RTAB
No in-app purchases









