# FontStack — SoundFont Player

> AUv3 SoundFont player for iOS DAWs, enabling creative sound layering and instrument management. (iPhone/iPad app by 4Pockets.com.)

- Source: https://appshunter.io/ios/app/fontstack/id6742742740 (this page in markdown: same URL + `.md`)
- Developer: [4Pockets.com](https://appshunter.io/developer/370131860)
- Category: Music
- Price: $14.99
- Rating: 4.60/5 from 11 App Store ratings · 7 written reviews indexed
- Age rating: 4+
- Requires: iOS 13 · 308 MB
- Languages: American English
- Released: 2025-04-01
- Data updated: 2026-09-09
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/fontstack/id6742742740/reviews.md

## What is FontStack?

FontStack is a 'fontastic' new AUv3 plugin for iOS which can be loaded into your favourite DAW allowing you to utilise all those wonderful and nostalgic SF2 SoundFonts you've collected over the years. The SoundFont standard was created back in the early 90s, and made famous by the SoundBlaster series of sound cards. With the introduction of the Amiga, it spawned a host of musical creation tools called Trackers, which allowed the Amiga to load these SoundFonts and create sophisticated musical scores of 4 or 8 tracks. These days we don't use this standard so much, but there is a wealth of free SF2 files available on the internet just waiting to be loaded into FontStack. A SoundFont comprises a file with an .sf2 file extension. This file contains a set of samples, instruments, and presets. FontStack enables you to load one or more SoundFonts into its 4 layers, and use them in lots of creative ways. 

You can stack layers to create a rich combination of multiple tones, or assign each layer its own key range on the keyboard to create virtual splits, or a mixture of the two. Each layer can also be assigned its own MIDI channel for true OMNI mode.

One great feature of FontStack is its ability to cache all your SoundFonts and the instruments they contain. This allows quick searching for specific instrument types without the need to physically search through SoundFonts to find them.

Another great feature is the ability to optionally link to a remote folder containing a global set of SoundFonts, so that they can be shared between apps. Both internal and external SoundFonts and their instruments will be cached and searching is just as easy as it is using internal SoundFonts.

FontStack features:

○ 4 SoundFont Layers which can be stacked, layered or played on different channels.
○ 6 Scenes per Layer containing different SoundFont instruments and settings.
○ Keyboard Splits can be created spreading multiple SoundFonts over a single keyboard.
○ SoundFont Stacks can be created, stacking multiple SoundFonts to produce a bigger, thicker sound.
○ Disk Streaming allows you to stream a SoundFont directly from disk saving physical memory.
○ File Manager allowing local and remote file management.
○ Symbolic Link allows you to specify a remote/external folder from which to access your SoundFonts.
○ Instrument Search allows you to search the content of local and remote SoundFonts folders.
○ Drag and Drop your sound fonts directly into the SoundFont Manager.
○ Reverb, Delay & Chorus effects can be applied to each instrument layer.
○ Haas and Stereo Width can be used to simulate virtual STEREO on SoundFonts with MONO samples.
○ Allows direct control of the SoundFonts Amp Envelope and Filter settings.

## Key features

- 4 SoundFont layers
- Keyboard splits
- SoundFont stacking
- Instrument caching
- Remote folder linking
- Reverb, Delay, Chorus effects
- Amp Envelope and Filter control

## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/fontstack/id6742742740/reviews.md

### 1/5 — Can you fix this PLZ?

*2026-07-06*

My common issue is that loading it, the soundfont always randomizes, but I need to only have the instrument to be what I chosen, even if I select drums, it sounds so FRICKED UP, can you please watch this issue?

### 5/5 — Best Soundfont player on iOS.

*2025-12-13*

Loads of great soundfonts, stackable, haas, fx, automation, super stable, lightweight, auv3, loads of import options, vast soundfont resources,  just brilliant

### 5/5 — Find fonts

*2025-08-28*

I have almost all your apps and love them all this one is great but I try to find more fonts on line but all I get is requests to join the site and no way to get the fonts shown on the page but I still enjoy the ones included

### 4/5 — Fast perfekt!

*2025-07-13*

Mir persönlich fehlt nur noch, dass die App auch im Hintergrund weiter genutzt werden kann und dass man eigene Presets per MSB, LSB und PC aufrufen kann.
LG
Michael

### 5/5 — Fantastic Feature Rich SoundFont Player app!

*2025-04-29*

This is way more than just a SoundFont player. The file management can address local and remote storage and includes a powerful search by instrument feature. The player is feature rich with: a very flexible randomizer using up to 4 Soundfonts mixed in any combination, 2, 3, or all 4; including a full line up of onboard effects to enhance each Soundfont; and an onscreen keyboard to display and play up to 4 layers of sounds, useful for keyboard splits and/or overlapping different sounds. This is a very flexible and complete SoundFont app. The compact User Interface is very well designed with all of FontStack's functionality in only 2 vertically small windows. iPad Mini users in landscape view will appreciate this compact interface. Overall, a fantastic app!! Thank you, Paul!

### 5/5 — Another 4Pocket Gem

*2025-04-28*

This is another great app from Paul, I wasn’t going to buy it until I watched Doug from the SoundTestRoom demonstrate it, it’s amazing especially having 4 sf2 files playing at the same time, definitely worth getting 👍

### 5/5 — Nice!-missing two key features;

*2025-04-06*

Would be exceptional if it could load other file formats besides sf2;sfz, and sysx. Files would make it absolutely indispensable. There's only one app currently that does load user sysx. Files, and also runs stand alone as well as au/auv -which this could also use,, but primarily, the ability to mix and match all of these different soundFont files with sysx. Files, would make it Premium along with the few other similar apps that actually work exceptionally for most of our intents and purposes... let it run remote sf2/sfz/dls/sysx., by loading into ram memory perhaps, bookmarking 'preset-groups' for later recall as user sets of remote files as cache, and then save the results in the cloud, could make this app truly beyond exceptional...

## Frequently asked questions about FontStack

### What is FontStack?

FontStack is an AUv3 plugin for iOS that allows you to load and use SoundFont (.sf2) files within your favorite digital audio workstation (DAW). It enables creative sound design through layering, key splitting, and effects.

### How much does FontStack cost?

FontStack is a paid application, priced at $14.99. This one-time purchase grants you access to all its features for use on your iPhone, iPad, or iPod.

### What devices does FontStack support?

FontStack is compatible with iPhone, iPad, and iPod devices. It requires iOS and is designed to integrate seamlessly with compatible DAWs on these platforms.

### Can I use FontStack offline?

Yes, once SoundFonts are loaded and cached within FontStack, you can utilize them within your DAW even without an active internet connection. This ensures uninterrupted music creation.

### Does FontStack have ads?

No, FontStack does not contain advertisements. As a paid application, it offers an ad-free experience, allowing for focused music production without interruptions.

### How often is FontStack updated?

The latest version of FontStack is 1.06, last updated on December 13, 2025. While specific update frequency isn't detailed, this indicates ongoing development and support for the application.

### What is the age rating for FontStack?

FontStack has an age rating of 4+. This suggests it is suitable for a wide audience, including younger users interested in music creation tools.

### Can FontStack link to external SoundFont folders?

Yes, FontStack features a symbolic link option that allows you to specify a remote or external folder to access your SoundFonts. This enables sharing SoundFonts between apps and easy management of your library.

## Version history (last 5 releases)

### 1.06 — 2025-12-13

Update due to updated age rating!

### 1.05 — 2025-11-30

Fixed various potential UI issues on iOS26.1

### 1.04 — 2025-11-19

v1.04 B75
Fixed toolbar and menu content issue misalignment in iOS26.1 (due to bug in iOS 26.1 was fiine in 26.0)

### 1.03 — 2025-06-05

v1.03 B74

Fixed the layer Rotate not working in Standalone mode.

Added options to reset the rotations if the host transport toggles ON/OFF or if the transport rewinds.

Other small bug fixes.

### 1.02 — 2025-04-22

v1.02 B71

Added a tagging system within the SoundFont Manager. This allows us to tag a folder with one or more tag categories.

You can apply tags to both local and remote folders. To set a tag SWIPE left on a folder and select TAGS. You can then add and remove tags from the selected folder.

You can use TAGS in the Randomize Options. This allows us to search multiple tagged folders during a randomization.

To apply TAGS to the instrument search, SWIPE down on the search button.

Updated the Vector Pad with a new 'Sequence' mode.

Added a Custom Tags button to the Manage SoundFonts window. You can Long Press this button to remove ALL tags from ALL folders.

Added a Previous / Next Search Results option to the Control Keys Options.

Added pattern matching to the Instrument and SoundFont search:

Search Terms Examples:-

piano organ - Returns names containing piano or organ.
piano+chorus - Returns names with both piano and chorus.
piano+chorus organ - Returns names with both piano and chorus or organ.
pi?no - Use a ? to match a single character.
p*no - Use a * to match any number of characters.
piano*2 - Find a match with piano followed by any number of characters and 2.

Updated user manual.

Added a link to a new MasterClass #1 video in the help manual.

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All apps by 4Pockets.com: https://appshunter.io/developer/370131860

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-09.*