Comparison

lgOpre vs FrequencyCat

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

Head to head
About

lgOpre

Transform your screen into an interactive audiovisual canvas. Trigger sound blocks with rhythmic dots to create immersive compositions. Save your progress automatically and collaborate with friends.

Highlights
  • Interactive audiovisual canvas
  • Rhythmic sound block triggering
  • Automatic progress saving
  • Side-by-side collaboration
  • Mesmerizing visual effects
  • Harmonious sound creation
Features
Read full description

Create with sound and image using lgOpre. Transform your screen into an interactive canvas where sound blocks, triggered by rhythmic dots, create immersive audiovisual compositions. Craft mesmerizing visuals and harmonious sounds with simple taps and swipes. Save your progress Never lose your masterpiece! Your creation is automatically saved, allowing you to pick up exactly where you left off when you return. Collaborate and Create Grab a friend and double the fun! Collaborate side-by-side to spark creativity and craft one-of-a-kind compositions that blend your ideas into something truly unique. Pronounced: luh-GOP-ruh

About

FrequencyCat

Transform your photos into unique sound art using advanced image-to-sound technology. Explore, enjoy, and share your creative audio-visual pieces. Embrace your inner artist and discover the unexpected.

Highlights
  • Morph images into sound art
  • Create spectrogram oddities
  • Share sound art creations
  • Unique audio-visual experience
Features
Read full description

Hide an image inside sound. FrequencyCat is a playful tool for exploring the connection between images, sound, and spectrograms. Choose an image, and FrequencyCat transforms it into a unique audio signal. Play the sound and view its spectrogram, and you’ll see the original image emerge again from the frequencies. With FrequencyCat, you can: - Turn images into sound - View audio spectrograms in real time - Play sounds and reveal the images hidden inside them - Explore how different images create different sounds - Discover the relationship between sound, frequency, and Fourier transforms in an intuitive way There’s no magic behind it. Just frequencies, phases, an inverse Fourier transform, and a little curiosity about sound. Whether you’re interested in acoustics, music, signal processing, or simply wondering what an image might sound like, FrequencyCat gives you a new way to explore. Pick an image. Hear what it sounds like.

Screenshots

lgOpre4 screens
FrequencyCat3 screens

Verdict

The call

The clearest difference is update cadence: lgOpre at every 4 months against FrequencyCat's every 40 months. lgOpre also leads on ratings volume (7 vs 1) and device support (3 vs 1). On price, rating, review sentiment and ads 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

On the App Store both sit at effectively the same score — 5.0 for lgOpre against 5.0 for FrequencyCat. That said, the two scores are not equally well evidenced: lgOpre has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

lgOpre ships an update every 4 months, FrequencyCat every 40 months. The most recent releases landed on September 24, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 7 level
lgOpre versus FrequencyCat: the parameters behind the verdict, then further details
ParameterlgOpreFrequencyCat
PriceFreeFree
Rating5.0 (7 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings7 — better1
Update frequencyEvery 4 months — betterEvery 40 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better16.0
Further details — not scored
Size20 MB3 MB
Age rating4+4+
DeveloperDavid GalbraithXuesong Zhang

Customer experience

lgOpre

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

FrequencyCat

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

lgOpre

No in-app purchases

None

FrequencyCat

No in-app purchases

Questions

Is lgOpre free?
lgOpre is free to download, with no in-app purchases.
Is FrequencyCat free?
FrequencyCat is free to download, with no in-app purchases.
Which has better reviews, lgOpre or FrequencyCat?
lgOpre and FrequencyCat are both rated 5.0 out of 5 on the App Store, from 7 and 1 ratings respectively.
Do lgOpre or FrequencyCat have ads?
Neither lgOpre nor FrequencyCat shows ads.
Which is updated more often, lgOpre or FrequencyCat?
lgOpre ships an update every 4 months, and FrequencyCat every 40 months. Most recently, lgOpre was updated on September 24, 2026 and FrequencyCat on October 6, 2026.

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