Spotifast for Windows: Open-Source Spotify Client Features, Limits and Safe Install Guide

What Spotifast is​

Spotifast is a native desktop client written in Rust with egui and librespot. It runs on Linux, macOS and Windows without embedding a browser engine, which the project says keeps startup and memory use low. It was previously called Fastpotify.

The project says it typically uses 100–250 MB of RAM, while Spotify's desktop app often uses 600 MB to over 1 GB. The project also claims a launch time of well under a second.

Treat these as developer-published figures. TechRadar repeats them, and Tom's Hardware's coverage also relays the author's claims. I found no controlled, like-for-like benchmark across different PCs. Your own numbers will depend on library size, album art cache, whether the visualizer is running and the version of the official client you are comparing against. Open Task Manager and measure both apps on your machine.

What you get​

According to TechRadar and the project's own descriptions:

• Library and search: You can browse playlists, Liked Songs, albums, artists and podcasts, search the catalogue, and edit playlists you own.
• Spotify Connect: Spotifast appears as a Spotify Connect device. You can also use it to control music on other devices.
• Familiar layout: Home and Search sit in the centre, Library and playlists on the left, and the Queue on the right. Both sidebars collapse.
• Nostalgia features: The app supports light and dark modes, custom themes, MilkDrop visualizations and classic Winamp skins. The Winamp-style mini player has skins, a playlist, sound controls and animations that move to your music. The project's materials describe skins in the .wsz format.
• Desktop integration: The app keeps playing when you close the window and stays in the system tray. On Windows, since 0.8.0, you can hover the taskbar button to get Previous, Play/Pause and Next.

The trade-offs​

Premium is required for playback. The project says Free accounts can browse and search but cannot play music through Spotifast, on this computer or another device.

TechRadar lists what is missing compared with the official app:

• No lossless audio. The project says playback supports up to 320 kbps.
• No social features.
• No AI-driven playlist tools, so no Prompted Playlists, Mixed Playlists, Blends or Collaborative Playlists.

TechRadar's remark that the gap between lossless and hi-res audio is minimal is its writer's opinion. Plenty of listeners will disagree, so check the bitrate ceiling before you switch.

Rate limits are the other catch. The developer's explanation, quoted by TechRadar, is that Spotify limits how often apps can request information. Spotifast usually shares that allowance with other listeners and some other music players. When the shared connection is busy, library and search results can load slowly, and a spinner appears in the top bar.

The project's documentation adds detail. Cached pages less than 15 minutes old need no repeat request. Older cached pages refresh one page at a time while the saved rows stay visible. So a slow library load doesn't necessarily mean the app is slow. It can mean Spotify's API is throttling requests.

Because the app is unofficial, changes on Spotify's side can temporarily break features until Spotifast is updated. For a daily-driver music app, that matters.

Installing on Windows​

This is the project's current Windows guidance for v0.12.0:

1. Download the installer for most PCs, or the ARM version if your PC uses an ARM processor. The installer adds Spotifast to the Start menu and doesn't need an administrator password.
2. If you want no installer, download a ZIP, extract it and open spotifast.exe. ZIPs exist for both processor types.
3. On first run, SmartScreen may warn about an unknown publisher. The project says to choose More info, then Run anyway.
4. Sign in with Spotify Premium and grant the two approvals TechRadar describes: one for library access and one for playing music on the computer.

A cautious note on step 3: that instruction comes from the project, not Microsoft. Before you override SmartScreen, make sure you downloaded the file from the official project site or its GitHub releases page. The project publishes a checksums file so you can confirm a download wasn't damaged or changed. Compare the file's SHA-256 hash against it. In PowerShell, Get-FileHash does this.

To make Windows open Spotify links in Spotifast, use Settings → Apps → Default apps.

Graphics driver caveat​

The app is built with egui, which needs OpenGL. The project says Spotifast needs OpenGL 2.0 or newer, which it says every current Windows graphics driver provides. In a virtual machine or remote session that only has the Microsoft Basic Display Adapter, it may not start. The documented fixes are to install the machine's graphics driver or enable GPU acceleration for the VM.

Version 0.12.0 also includes a fallback. When a modern OpenGL context isn't available, Spotifast now falls back to a compatible one instead of failing to start. That should help older drivers. The project still documents the Basic Display Adapter scenario as a possible problem, so don't count on the fallback in a bare VM.

What changed in 0.12.0​

The project's GitHub page lists version 0.12.0 as the latest release, published October 3, 2026. Highlights:

• Pause behaviour: Paused playback now lets the audio device rest instead of feeding it silence. The developer reports Windows' audio service CPU use falling from about 5% to nothing, and on a Mac, Spotifast's own use falling from about 0.5% of a core to nothing. These are the developer's own measurements, not independent tests.
• Turkish is now available.
• Linux: Command-line controls now work on Linux. Dropping .wsz skins on the window works on Wayland again.
• Bug fixes: Queue reordering, the Add to playlist menu staying open during search, greyed-out volume for devices that reject remote volume changes, and the top bar in narrow windows.
• Windows: Older graphics drivers now start the app (see above).
• Scripting: On macOS and Windows, the fixed local port 47113 is gone. It is replaced by a private channel that only the spotifast command can use. Tools that opened the port directly, such as Stream Deck plugins, should call the spotifast subcommands instead.

Upgrade warnings​

Version 0.12.0 finishes the move from the old Fastpotify name. If you update straight from Fastpotify 0.9.0 or older, settings, sign-ins and caches are not carried over, so you start fresh. Your old files stay where they were. Windows users on 0.10.0 to 0.10.2 need to launch Spotifast once by hand after updating, because those versions' updater looks for the old program name.

Privacy​

For an unofficial client that holds your Spotify sign-in, the privacy details matter.

• The privacy notice says there is no account, server, telemetry, analytics or advertising. This is the developer's statement, not an audit.
• Sign-in grants and the reusable playback credential are kept in the system credential store. That is Credential Manager on Windows, Keychain on macOS and Secret Service on Linux. The notice says your Spotify password never passes through Spotifast, because you sign in on Spotify's own pages.
• This covers version 0.8.0 and later. Earlier versions kept sign-ins in files, so update to a current release.
• Some data still leaves your PC. Spotify receives your sign-in, library, search, playlist, playback and Connect requests under your account.
• When the lyrics panel is open and Spotify has no lyrics for a song, the app sends the song's artist, title, album and length to LRCLIB.
• It asks GitHub once a day for the latest release, and you can turn automatic checks off in Settings.

Is it worth trying?​

It suits Premium subscribers who care about memory, a snappy launch and a Winamp-flavoured interface, and who don't use lossless audio, Blends or AI playlists. It is a poor fit if you want the full official feature set, or if an occasional break after a Spotify-side change would annoy you.

The project is young and moving fast. Tom's Hardware's coverage says development is active but warns of possible turbulence. The Spotify account risk is also worth a thought. The project's own FAQ has a question about whether your account could be banned. I haven't seen its answer, so check that page before you sign in.

If you try it, measure the RAM difference yourself and keep the official app installed as a fallback.