Comparison

Sonshine vs Rainbow Keys

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

Head to head

Learn Scales and Chords in AR

Free

🎵 Music

No ratingsView app →

About

Sonshine

Read full description

Listen to Sonshine and Sonshine Extra, or catch-up on interviews, stories and videos you might have missed. App features include; - Song information, preview and sharing - High Quality live streaming - Social Links - Original Podcasts and Catchup on your favourite shows - Seamless integration with Apple CarPlay

About

Rainbow Keys

Learn piano scales and chords with augmented reality. This app overlays key names onto your keyboard, aiding real-time learning for improvisation and music theory.

Highlights

Augmented reality key display
Object recognition for keyboards
Selectable scales and chords
Real-time learning
Music theory education
Improvisation aid

Read full description

Rainbow keys is an interactive augmented reality app that uses object recognition to display the names of the keys onto your piano or keyboard. You can select from a large range of scales and chords to display, allowing you to learn in real time. It's great for improvisation, developing your skills in piano and learning music theory.

Screenshots

Sonshine3 screens

Rainbow Keys4 screens

Verdict

The call

The clearest difference is update cadence: Rainbow Keys at every 4 days against Sonshine's every 22 months. Rainbow Keys also leads on device support. On price, in-app purchases and iOS requirement 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.

UpkeepUpdate frequency

Sonshine ships an update every 22 months, Rainbow Keys every 4 days. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard2 real differences · 6 level

Sonshine versus Rainbow Keys: the parameters behind the verdict, then further details
Parameter	Sonshine	Rainbow Keys
Price	Free	Free
Positive reviews	—	100.0% of reviews
Update frequency	Every 22 months	Every 4 days — better
Ads	—	No
In-app purchases	No	No
Monetization	—	Free with in-app purchases
Devices	—	iPhone, iPad — better
Requires iOS	16.0 — better	17
Further details — not scored
Size	40 MB	34 MB
Age rating	4+	4+
Developer	GOOD NEWS BROADCASTERS INC	Matthew Sefton

In-app purchases

None

Sonshine

No in-app purchases

None

Rainbow Keys

No in-app purchases

Questions

Is Sonshine free?

Sonshine is free to download, with no in-app purchases.

Is Rainbow Keys free?

Rainbow Keys is free to download, with no in-app purchases.

Which is updated more often, Sonshine or Rainbow Keys?

Sonshine ships an update every 22 months, and Rainbow Keys every 4 days. Most recently, Sonshine was updated on November 3, 2026 and Rainbow Keys on November 4, 2026.