Comparison

isfizz vs spaceVerb

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

Head to head
About

isfizz

This app plays SFZ files, an open format for sampled sound instruments. It supports various audio file formats, MIDI, and Scala tuning files. It also functions as an Audio Unit Extension (AUv3) for use with other music apps.

Highlights
  • SFZ file playback
  • Audio Unit Extension (AUv3) support
  • Edit SFZ strings
  • Load SFZ files in place
  • Scala tuning file support
  • MIDI support
Features
Read full description

isfizz is a SFZ file player. SFZ is an open text format for sampled sound instruments. This app can load SFZ and play the instrument. - Includes Audio Unit Extension (AUv3). - You can edit SFZ string. - The app loads SFZ files in place without copying the files. - Double tap to enter the value, triple tap to reset. - Supports Scala tuning files (.scl). - Supports MIDI. - Supports 16 out. use the "output=N" opcode in SFZ. Supported sample file format: - .wav (raw PCM) - .aiff - .mp3 - .flac - .ogg (vorbis) - .wv (wavpack) This app is an iPhone/iPad port of sfizz-ui project. The app is made from some sfizz-ui codes and images. About half of the income from this app will be donated to SFZ Tools team. This app and the description contain machine translated text.

About

spaceVerb

This audio effect module offers a versatile stereo reverb with 14 distinct spaces, from conventional rooms and halls to unique environments like caves and mausoleums. It provides in-depth controls for shaping the reverb, including EQ and master settings, and supports cross-platform preset sharing. It functions as a standalone app or an AUv3 plugin for various host applications.

Highlights
  • 14 distinct reverb spaces
  • In-depth sound sculpting controls
  • 3-band EQ section
  • Preset manager with save/share
  • AUv3 plugin compatibility
  • Standalone app functionality
Features
Read full description

spaceVerb multi-mode stereo reverb module. spaceVerb will both seamlessly blend your projects together, offering a creative unique touch to your audio. spaceVerb offers a versatile selection of 14 different spaces, each with their own unique sonic characteristic, providing you with a broad spectrum of sounds to enhance your projects. Whether you’re after conventional reverb sounds like rooms and halls or unique spaces like a cave or mausoleum. Unlock the full sonic potential of each space with in-depth controls; Mix, Dampening, Ducking, Left/Right Repeats and Decay. Their three band EQ Section (Low, Mid, and High), and master controls (Master Volume & Pan). 30 Factory Presets included with the ability to save and share cross platform presets. All parameters including the current screen in view offer automation for full control in your sessions. Includes stand alone and AUv3 plug-in instance for use in all of your favorite host applications like Cubasis, AUM, Garageband, and many more! Compatible for both iPhone and iPad. Features - 14 Plate Reverb Models; ranging from early/vintage styles to creatively inspiring and modern/futuristic - Over 16 In-depth controls to sculpt your reverbs, including: Pre Delay, Decay, Damping, Repeat Speed, Ducking, and more! - Built-in 3-band EQ section for additional sonic character control - Preset Manager with Save, Save As, Rename, and Delete functionality - Over 20 Factory presets, including both Send and Insert styles - Cross-platform support: presets can be shared between iOS and macOS & Windows - AUv3 compatible with your favorite AU Host apps such as Garageband, AUM, Cubasis, and more! Spaces: Booth - Step into a professional-grade, intimate studio ambiance, meticulously designed for enhancing vocal clarity or introducing a subtle sense of space to your sound. Guitar Room - Immerse yourself in a professionally crafted, close-quarters atmosphere, tailored to improve vocal clarity or infuse a subtle sense of space into your sound. Drum Room - Experience the precision of a compact, intimate studio setting, perfect for refining vocal clarity or introducing a subtle sense of space into your sound. Live Room - Drench your audio in the expansive atmosphere of a well-appointed studio space, tailored for accommodating intricate soundscapes and elevating your compositions. Hall - Reveal an acoustically perfected space, ideal for professional piano performances and sound experimentation. Cathedral - Craft divine soundscapes suited for professional choral arrangements and ethereal compositions in a studio setting. Mausoleum - A solemn and spacious mausoleum. Its marble-clad surroundings create a subtle, haunting ambiance. Stairwell - Discover a less conventional space, where a multitude of reflections comes together to create a unique ambiance, gently guiding your sound to fresh and understated places. Cave - Immerse your signal in the enigmatic, atmospheric character of a massive cave-like space, adding a unique depth to your projects. Garage - Send our audio to a close-quarters space with highly reflective surfaces, offering a very distinct sound.

Screenshots

isfizz4 screens
spaceVerb4 screens

Verdict

The call

The clearest difference is update cadence: isfizz at fortnightly against spaceVerb's every 8 months. isfizz also leads on price ($2.99 vs $4.99) and ratings volume (14 vs 4). spaceVerb's advantage is rating (5.0 vs 4.7) and iOS requirement (12.0 vs 15.0). On ads, in-app purchases, monetization model and device support 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

isfizz costs $2.99 and spaceVerb $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

spaceVerb holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 14 and 4 respectively.

UpkeepUpdate frequency

isfizz ships an update fortnightly, spaceVerb every 8 months. The most recent releases landed on September 19, 2026 and September 7, 2026 respectively.

Scorecard5 real differences · 5 level
isfizz versus spaceVerb: the parameters behind the verdict, then further details
ParameterisfizzspaceVerb
Price$2.99 — better$4.99
Rating4.7 (14 ratings)5.0 (4 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings14 — better4
Update frequencyFortnightly — betterEvery 8 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size6 MB74 MB
Age rating4+4+
DeveloperRyouta KiraOSC Audio

Customer experience

isfizz

All ratings14 ratings
Positive92.9%
Neutral0.0%
Negative7.1%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

spaceVerb

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

isfizz

No in-app purchases

None

spaceVerb

No in-app purchases

Questions

Is isfizz free?
isfizz costs $2.99, with no in-app purchases.
Is spaceVerb free?
spaceVerb costs $4.99, with no in-app purchases.
Which has better reviews, isfizz or spaceVerb?
spaceVerb is rated higher. isfizz averages 4.7 out of 5 from 14 ratings, while spaceVerb averages 5.0 from 4 ratings.
Do isfizz or spaceVerb have ads?
Neither isfizz nor spaceVerb shows ads.
Which is updated more often, isfizz or spaceVerb?
isfizz ships an update fortnightly, and spaceVerb every 8 months. Most recently, isfizz was updated on September 19, 2026 and spaceVerb on September 7, 2026.

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