I did some testing with the free verion (4.6) of the Rainbow-app installed on a Samsung Galaxy S9plus with the Mavic Mini (MM).
Free version 4.6 (with in-app €16/yr VIP membership purchase):
An app to unlock power of your DJI Drones(Mavic
Mini2/
air2s etc.) with Rainbow
play.google.com
Paid version 3.4 (€16)
Unlock unlimited power of your DJI Mavic
Mini2/
Air2s/
Air 2/Inspire with Rainbow
play.google.com
Waypoints:
As expected Waypoints does NOT work on the MM because of hardware/software limitations by DJI.
As a result of this, Hyperlapse (which uses waypoints) also does NOT work.
Also Waypoint functionality is very limited compared to Litchi.
In the description Rainbow refers to 2 youtube videos:
Waypoint management:
Flying a mission:
This makes no sense at all !
These videos are made for the DJI Ultimate Flight v3 app which is last updated in september 2019.
Werkt met Phantom 3/4, Inspire 1/2, Mavic 1/2 / Air / Pro, Spark, Matrice 2xx
play.google.com
In FPV-mode (manual flying) there are 3 usefull buttons on the left hand side of the screen: Course-lock, Home-lock & Tripod mode. NONE of these work for the MM.
ALSO do NOT expect to be able to shoot RAW images and 4K video with the MM because DJI simply does not allow it in the SDK.
ORBIT is another mode NOT supported by the DJI SDK.
GENERAL:
The interface looks a lot like Litchi.
The screen-buttons however on the S9plus are way too small.
The app is designed to work for Phantoms, Mavics, Spark & Inspire, however the DJI SDK's for these different drones do NOT unlock the same features for every drone. The Rainbow app however does NOT take this in consideration. (The 3 buttons mentioned above and Waypoint-mode should NOT be displayed when connected to the MM).
There is a weird item in Voice-setting: "Electric Quantity Alarm Valve Value(%)", also some onscreen information (popups) seem to be computer translations from chinese to english which are confusing.
The Rainbow app should at least have the ability to calibrate the drone-compass (it does NOT).
Compared to Litchi, Rainbow is a very immature app. By that I mean it can NOT replace the DJI Fly app. Litchi however CAN replace the DJI GO(4) app.
I don't know what extra funcionality the €16/yr VIP-membership brings or the difference between the free and paid version.
So,
Crystal Sky & none-64bit-device users just have to wait for this app to become mature and/or wait for the Litchi-app update.
Litchi is €25 only once for 1 device/account/OS.
Rainbow is €16 per year ! (and Android only)
Litchi is available for:
-iOS in the Apple AppStore
-Android in PlayStore
-
CrystalSky/Smart Controler/
P4+ Screen on Amazon
-Epson
Moverio BT300 in the Epson AppsMarket