Comparison

Stria vs Classic FX

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

Head to head
About

Stria

This app is a multilevel interactive sound synthesizer that utilizes Frequency Modulation and Wavetable Additive techniques. It offers extensive control over oscillators, pitch grids, and effects, with support for various audio and MIDI connections.

Highlights
  • Multilevel interactive sound synthesizer
  • Up to 240 FM or Wavetable Additive Oscillators
  • Five Spectral Pitch Grid Generators
  • MIDI Pad With Scale Grid
  • Extensive effects chain (Doppler, Glitch Gen, Reverb, etc.)
  • Snapshots Presets Morphing Pad
  • Control Manager LFO for Parameters
Features
Read full description

Stria is rated as a Killer App by Apps4iDevices. Multilevel Interactive Sound Synthesizer Idea and Csound-Orchestra by Eugenio Giordani “Stria” is the title of a very important composition by John Chowning and I would like to say that this computer music piece represents the manifest of Frequency Modulation technique applied to audio synthesis, invented by Mr. Chowning himself. + Audiobus and Inter-App Audio support + Up to 240 Frequency Modulation Oscillators or simple Wavetable Additive + Five Spectral Pitch Grid Generators (Geometric, Harmonic, Fibonacci, Scalar, Temperated) + MIDI Pad With Scale Grid + Effects chain: Doppler, Chopper, Glitch Gen, Sync Grain, Spectral Arpeggiator, FDN Reverb, Dynamic Compressor/Expander + Snapshots Presets Morphing Pad + Control Manager LFO for Parameters + Midibus, Virtual Midi and Network: 14 bit NRPN controllers + Capture Master Audio Output + File Manager, sharing common audio files via iTunes, Dropbox and AudioCopy + Post Fx Chain: Doppler, Chopper, Out Of Range, Sync Granulator, Spectral Arpeggiator, Reverb FDN, Dynamisc Processor + Bluetooth A2DP High Quality + etc...

About

Classic FX

Enhance audio with a comprehensive sound effects processor. It offers equalization, reverb, and unique morphing capabilities to add brightness and expand soundscapes for instruments, vocals, and drums. Experiment with diverse effects and dynamic transitions for creative sound design.

Highlights
  • 22 unique processing algorithms
  • 40 diverse presets
  • Morphing between effect slots
  • Three-band equalizer
  • Algorithmic reverb
  • Envelope follower
  • Sequencer for rhythmic control
Features
Read full description

Classic FX is a complete sound effects processor and a mono-to-stereo enhancer with equalizer, effects and reverb, based on specially designed high-quality processing algorithms and suitable for any kind of audio sources. This application will add brightness and expand the sound space of any musical instruments, synthesizers, drums or voice. Unique and diverse effects with unified control parameters provide convenience and ease of customization, while at the same time plenty of room for individual expression and experimentation. Another unique feature of Classic FX is the Morphing option, based on complex effects matrix transformations, which allows you to control the dynamic transition between any two presets. While this can produce stunning effects, it's a breeze to control - you just need to move a fader or push a button. For more morph experimentation, this app has three LFOs to create more complex waveforms for changing morphs. Each LFO has different ranges, waveforms and can sync to the external BPM. Some of the other features of Classic FX: - Classic FX has 22 unique processing algorithms and 40 different presets. - Two slots in which you can use different effects and smoothly morph between them. - Three band equalizer with high / low shelving filters and middle peaking filter. - Easy to use algorithmic reverb, suitable for any sound source. - Limiter on output prevents any possible clipping. - Envelope follower for dynamic control of each effect. - Sequencer for rhythmic control of each effect. - Three special LFO in series to automate morphing. - Hot buttons to change the active effect slot. - Changing a group of parameters at the same time. - Echo module, Sequencer, and Auto morphing synced with the main BPM source. - The effect algorithm and its parameters can be saved as a preset. - Detailed application description and description of algorithms. - Quick info and description of each algorithm used in presets. Classic FX is a universal application for iOS and macOS. It can work on iPhone and iPad as well as Mac / MacBook with M1 chip (and later). Classic FX works on iPhone and iPad standalone, as an Audio Unit or Inter-App Audio module, and supports Audiobus and Ableton Link. On MacOS, Classic FX can works both as a standalone application and as an Audio unit (AUv3) with DAWs and audio unit hosts like Ableton Live, Logic Pro, GarageBand, MainStage, Cockos Reaper, Plogue Bidule, Hosting AU, and other hosts that support AUv3 plugins. All application features are available on iOS and macOS. Presets demo: https://www.youtube.com/watch?v=qyiKOAM7pjQ https://www.youtube.com/watch?v=6h6Or3OTCsY https://www.youtube.com/watch?v=qXoxGmrXJVk You can find more information on Classic FX and other experimental audio processing apps at: https://motion-soundscape.blogspot.com

Screenshots

Stria4 screens
Classic FX4 screens

Verdict

The call

The clearest difference is rating: Stria at 5.0 against Classic FX's 4.6. Stria also leads on price ($9.99 vs $12.99). Classic FX's advantage is update cadence (every 2 months vs every 5 months) and iOS requirement (13.4 vs 15.6). On review sentiment, ratings volume, ads 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

Stria costs $9.99 and Classic FX $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Stria holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 35 and 22 respectively. Written reviews point the same way: 91% of Stria's written reviews are positive against 87% of Classic FX's.

UpkeepUpdate frequency

Stria ships an update every 5 months, Classic FX every 2 months. The most recent releases landed on August 31, 2026 and September 7, 2026 respectively.

Scorecard4 real differences · 6 level
Stria versus Classic FX: the parameters behind the verdict, then further details
ParameterStriaClassic FX
Price$9.99 — better$12.99
Rating5.0 (35 ratings) — better4.6 (22 ratings)
Positive reviews91.1% of reviews — better86.7% of reviews
Number of ratings35 — better22
Update frequencyEvery 5 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.4 — better
Further details — not scored
Size19 MB12 MB
Age rating4+4+
DeveloperapeSoftIgor Vasiliev

Customer experience

Stria

All ratings35 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews45 reviews
Positive91.1%
Neutral4.4%
Negative4.4%

Classic FX

All ratings22 ratings
Positive90.9%
Neutral0.0%
Negative9.1%
Written reviews15 reviews
Positive86.7%
Neutral0.0%
Negative13.3%

In-app purchases

None

Stria

No in-app purchases

None

Classic FX

No in-app purchases

Questions

Is Stria free?
Stria costs $9.99, with no in-app purchases.
Is Classic FX free?
Classic FX costs $12.99, with no in-app purchases.
Which has better reviews, Stria or Classic FX?
Stria is rated higher. Stria averages 5.0 out of 5 from 35 ratings, while Classic FX averages 4.6 from 22 ratings.
Do Stria or Classic FX have ads?
Neither Stria nor Classic FX shows ads.
Which is updated more often, Stria or Classic FX?
Stria ships an update every 5 months, and Classic FX every 2 months. Most recently, Stria was updated on August 31, 2026 and Classic FX on September 7, 2026.

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