Comparison

SimpleFFT vs Color Cauldron

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

Head to head

Frequency analysis

AI generated color palettes

Free

🔧 Utilities

★ 5.05 ratingsView app →

About

SimpleFFT

Features

Read full description

This app can easily analyze the frequency of sound. For the sound of the recording file recorded at each refresh time interval, FFT is executed and displayed for the four voices collected one after another at each refresh interval.

About

Color Cauldron

Generate stunning color palettes by describing their intended use. This AI-powered tool allows you to save, share, and discover unique color combinations, with home screen widgets for daily inspiration.

Highlights

AI-generated color palettes
Describe color usage for generation
Save and share palettes
Download palettes as images
Discover unique color names
Home screen widgets for inspiration

Features

Read full description

Brew beautiful color palettes by simply describing places, things, feelings, sounds, or more. AI powered, imagination driven: Creating new color palettes is simple, yet powerful. Save and share your palettes: Easily share your palettes with others or download them as images. Your palettes are saved and synced between your devices. Discover unique colors: Explore new colors in each generated palette and discover unique names that create a whole new connection to each shade. Inspiration on your home-screen: See your favorite palettes on your home screen with widgets. Watch them rotate daily or pick specific palettes to show.

Screenshots

SimpleFFT4 screens

Color Cauldron4 screens

Verdict

The call

The clearest difference is ads: Color Cauldron at none against SimpleFFT's shown. SimpleFFT's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 26.0). On price, update cadence and in-app purchases 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. SimpleFFT sells 1 one-off in-app purchase and Color Cauldron sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

SimpleFFT ships an update every 18 months, Color Cauldron every 13 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

Scorecard3 real differences · 7 level

SimpleFFT versus Color Cauldron: the parameters behind the verdict, then further details
Parameter	SimpleFFT	Color Cauldron
Price	Free	Free
Rating	—	5.0 (5 ratings) — better
Positive reviews	—	100.0% of reviews
Number of ratings	—	5 — better
Update frequency	Every 18 months	Every 13 months — better
Ads	Yes	No — better
In-app purchases	Yes	Yes
Monetization	—	Free with in-app purchases
Devices	iPhone, iPad, iPod — better	iPhone
Requires iOS	15.0 — better	26.0
Further details — not scored
Size	5 MB	4 MB
Age rating	4+	4+
Developer	HIROFUMI MARUO	Hellish Creative

In-app purchases

1 purchases

SimpleFFT

One-time1

Premium Functions$0.49

1 purchases

Color Cauldron

One-time1

Color Cauldron+$2.99

Questions

Is SimpleFFT free?

SimpleFFT is free to download, with in-app purchases available.

Is Color Cauldron free?

Color Cauldron is free to download, with in-app purchases available.

Do SimpleFFT or Color Cauldron have ads?

SimpleFFT shows ads; Color Cauldron does not.

Which is updated more often, SimpleFFT or Color Cauldron?

SimpleFFT ships an update every 18 months, and Color Cauldron every 13 months. Most recently, SimpleFFT was updated on November 2, 2026 and Color Cauldron on November 4, 2026.