Comparison

FM Playground vs SEPBLOOM LABS

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

Head to head
About

FM Playground

Features
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FM Playground is an educational app designed for learning and experimenting with FM synthesis (Frequency Modulation Synthesis). Developed as part of the "2025 Swift Sound - Creative Coding for Computer Musicians" project at MARTE Lab, Department of Multimedia, Dongguk University, by Yeonho Kim, Taejun Kim, Seoyul Son, and Sookyung Yoon, with guidance from Gwangyu Lee. The app features multiple interactive views where users can manipulate sound in real time using touch gestures and iPhone sensors (gyroscope, compass, etc.). Key Features: - What is FM Synthesis?: Learn the fundamentals of FM synthesis with an interactive view. Adjust sliders to hear real-time modulation effects and explore complex timbres. - Gesture-based control of timbre, frequency, and volume across various interactive views. - Open-source code available for study, experimentation, and expansion.

About

SEPBLOOM LABS

Features
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SEPBLOOM LABS brings images, sound and touch into one quiet creative space. Import an image or create a short text composition. Explore a continuous particle field with orbit, zoom, attraction and depth. Choose organic motion presets or fluid textures from the MOTION panel. Import your own music to drive breathing, curls and flowing movement. Song analysis guides gradual transitions into floating particles during energetic passages, then back toward the image as the music settles. PLAY turns the canvas into an instrument. Choose a sound, root and scale, then play the multitouch keyboard. Shape expression with vertical finger movement, explore chords, or adjust envelope, filter, LFO and space. Felt, Clear and Dream offer different starting points. Record particle videos with imported music or your live performance, then preview, share or save them to Photos. Light and dark themes keep the focus on your work. Works locally on iPhone and iPad. No account is required. Music files are supplied by you; use content you have permission to share. AI music generation is not included in this release.

Screenshots

FM Playground4 screens
SEPBLOOM LABS3 screens

Verdict

The call

The clearest difference is iOS requirement: SEPBLOOM LABS at 17.0 against FM Playground's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard1 real difference ยท 5 level
FM Playground versus SEPBLOOM LABS: the parameters behind the verdict, then further details
ParameterFM PlaygroundSEPBLOOM LABS
PriceFreeFree
Update frequencyEvery 3 daysEvery 3 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.017.0 โ€” better
Further details โ€” not scored
Size19 MB41 MB
Age rating4+4+
DeveloperGwangyu LeeYU ZHANG

In-app purchases

None

FM Playground

No in-app purchases

None

SEPBLOOM LABS

No in-app purchases

Questions

Is FM Playground free?
FM Playground is free to download, with no in-app purchases.
Is SEPBLOOM LABS free?
SEPBLOOM LABS is free to download, with no in-app purchases.
Do FM Playground or SEPBLOOM LABS have ads?
Neither FM Playground nor SEPBLOOM LABS shows ads.
Which is updated more often, FM Playground or SEPBLOOM LABS?
FM Playground ships an update every 3 days, and SEPBLOOM LABS every 3 days. Most recently, FM Playground was updated on October 30, 2026 and SEPBLOOM LABS on October 31, 2026.

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