Comparison

Crazyflie 2 vs RTAB

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Bluetooth low energy connectivity
  • On-screen joystick controls
  • Phone tilting flight control
  • Configurable control sensitivity
  • Configurable control modes
  • Firmware updates
Features
Read full description

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

About

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.

Highlights
  • 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
Read full description

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

Crazyflie 22 screens
RTAB3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Crazyflie 2 versus RTAB: the parameters behind the verdict, then further details
ParameterCrazyflie 2RTAB
PriceFreeFree
Rating2.7 (6 ratings)4.8 (42 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings642 — better
Update frequencyEvery 13 monthsEvery 5 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better15.6
Further details — not scored
Size8 MB20 MB
Age rating4+4+
DeveloperBitcrazeMathieu Labbe

Customer experience

Crazyflie 2

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

RTAB

All ratings39 ratings
Positive97.4%
Neutral0.0%
Negative2.6%
Written reviews12 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Crazyflie 2

No in-app purchases

None

RTAB

No in-app purchases

Questions

Is Crazyflie 2 free?
Crazyflie 2 is free to download, with no in-app purchases.
Is RTAB free?
RTAB is free to download, with no in-app purchases.
Which has better reviews, Crazyflie 2 or RTAB?
RTAB is rated higher. Crazyflie 2 averages 2.7 out of 5 from 6 ratings, while RTAB averages 4.8 from 42 ratings.
Do Crazyflie 2 or RTAB have ads?
Neither Crazyflie 2 nor RTAB shows ads.
Which is updated more often, Crazyflie 2 or RTAB?
Crazyflie 2 ships an update every 13 months, and RTAB every 5 months. Most recently, Crazyflie 2 was updated on November 1, 2026 and RTAB on November 3, 2026.

Other comparisons