BetterStrap vs Bloxstrap, Fishstrap and Voidstrap
Four Roblox bootstrappers, one job: sit in front of the client, apply your FastFlags and mods, and stay out of the way. They are all free. The differences are multi-instance, how far the FastFlags go, and whether there is a Mac build at all.
Free · Windows 10 & 11 · macOS 11+ (Apple silicon & Intel) · On a Mac? Get the macOS build
Want the open-source option with the biggest community? That is Bloxstrap, and its forks Fishstrap and Voidstrap if you specifically need multiple clients, which Bloxstrap dropped. Want per-game FastFlag profiles, an account manager, a playtime overlay and a build that actually runs on macOS? That is BetterStrap. Nobody has to lose here — they are all free, and none of them touch the running game.
Side by side
Real BetterStrap screenshots on the left. The other three are described in their own published terms — we do not reproduce anyone else’s app in screenshots.
BetterStrap: FastFlags, mods and stats in one app, on Windows and macOS.
Bloxstrap, Fishstrap, Voidstrap
Open source on GitHub · Windows
One lineage: Bloxstrap defined the modern Roblox bootstrapper, and Fishstrap and Voidstrap are community forks of that idea.
- • Free and open source, code public on GitHub
- • FastFlag editor and asset mods in all three
- • Discord Rich Presence — Bloxstrap’s own RPC format is the one everyone implements
- • Multiple clients: removed from Bloxstrap, kept in Fishstrap and Voidstrap
Facts limited to each project’s own public documentation. Where we have not verified a feature, the table says “—” rather than guessing.
Four bootstrappers, feature by feature
Flip “show differences only” to drop the rows where all four agree. A “—” means we have not verified that feature for that app, not that it is missing.
| Feature | BetterStrap | Bloxstrap | Fishstrap | Voidstrap |
|---|---|---|---|---|
| Price | Free | Free | Free | Free |
| Platforms BetterStrap ships a signed, notarized macOS build alongside the Windows one | Windows & macOS | Windows | Windows | Windows |
| Open source All three of the others publish their code on GitHub. BetterStrap does not — that row goes to them | No | Yes | Yes | Yes |
| FastFlags editor | Yes | Yes | Yes | Yes |
| Named FastFlag profiles Save a flag set under a name and switch between sets | Yes | — | — | — |
| Per-game FastFlag profiles Map a profile to a place id so joining that game applies it automatically | Yes | — | — | — |
| One owner per flag Each flag is written by exactly one control, so two toggles can never stack contradictory values | Yes | — | — | — |
| FastFlags for Roblox Studio | Yes | — | — | — |
| Multiple Roblox instances Bloxstrap removed multi-instance; Fishstrap and Voidstrap kept it | Yes | No | Yes | Yes |
| Asset mods (sounds, cursors, fonts, textures) BetterStrap backs the originals up and re-applies the overlay after a Roblox update | Yes | Yes | Yes | Yes |
| Discord Rich Presence | Yes | Yes | Yes | Yes |
| Ask to join from your Discord card Off by default — it exposes a joinable server secret to your Discord friends | Yes | — | — | — |
| Server region shown when you join | Yes | — | — | — |
| Built-in account manager Sign-in based, and it records playtime per account | Yes | — | — | — |
| In-game playtime overlay + session stats Hotkey-toggled overlay, plus a summary when you leave a game | Yes | — | — | — |
| Custom crosshair overlay | Yes | — | — | — |
| Launch your own programs with Roblox BetterStrap pins each approval to the binary’s content hash, so a swapped file asks again | Yes | Yes | Yes | Yes |
| Custom launch splash | Yes | Yes | Yes | Yes |
| App themes: light/dark, accent, background | Yes | — | — | — |
| Plugin system Opt-in and gated behind a warning — plugins run with the app’s own privileges | Yes | — | — | — |
| Auto-update | Yes | Yes | Yes | Yes |
Why choose BetterStrap
- FastFlags that remember the game. Save a flag set as a profile and map it to a place, so a building game and a shooter each get their own settings without you editing JSON between joins.
- It runs on a Mac. A signed, notarized macOS build with the same FastFlags, mods and stats as the Windows one — the row where the other three simply are not present.
- More than a launcher. An account manager, an in-game playtime overlay with a post-game summary, a custom crosshair and a Discord card your friends can ask to join.
When Bloxstrap is the right call
If reading the source before you run it is your bar, Bloxstrap clears it and BetterStrap does not: Bloxstrap, Fishstrap and Voidstrap are all public on GitHub. That is a real advantage and we are not going to pretend otherwise.
They are also the established option on Windows with the larger communities behind them. If you are on Windows, happy with one client at a time, and mostly want FastFlags and mods, Bloxstrap does that job. If you want the extra surfaces or you are on a Mac, see BetterStrap or the whole Better Roblox suite.
Bloxstrap questions, answered
The specific things people ask before they switch, each in its own short answer.
Is Bloxstrap safe?
Bloxstrap is open-source and widely used; here is what to check before trusting any bootstrapper.
Read the answerWhat are the best Bloxstrap alternatives in 2026?
A roundup of Roblox bootstrappers worth trying, including cross-platform, stats-focused options.
Read the answerBloxstrap vs Fishstrap vs Voidstrap — which is best?
An honest three-way look at the top Roblox bootstrappers — plus a cross-platform, stats-focused fourth option.
Read the answerWhy is Bloxstrap not working?
Bloxstrap not launching Roblox is usually the web-launch handler or bad FastFlags — here's how to fix it.
Read the answerHow do you uninstall Bloxstrap and go back to normal Roblox?
Uninstall Bloxstrap cleanly — close the tray app, clear %localappdata%, re-register the launcher. Switching is painless.
Read the answerBloxstrap alternative FAQ
Is BetterStrap a good Bloxstrap alternative?
It covers the same ground and then some. BetterStrap is a Roblox bootstrapper with a FastFlags editor, asset mods, Discord Rich Presence and custom programs on launch, which is the Bloxstrap feature set, and it adds multiple Roblox instances, named and per-game FastFlag profiles, a built-in account manager, an in-game playtime overlay and a macOS build. The one row Bloxstrap clearly wins is open source: its code is public on GitHub and BetterStrap’s is not.
What is the difference between Bloxstrap, Fishstrap and Voidstrap?
Fishstrap and Voidstrap are community forks that grew out of Bloxstrap, so all three share the same core idea: a launcher that sits in front of the Roblox client, applies FastFlags and asset mods, and reports a Discord presence. The most-cited practical difference is multiple Roblox instances — Bloxstrap removed that feature, and both forks kept it, which is why people looking to run more than one client end up on a fork.
Can you run several Roblox clients at once with Bloxstrap?
Not with Bloxstrap itself: multi-instance was removed from it. Fishstrap and Voidstrap still carry it, and BetterStrap has it behind a single toggle. Running several clients is a client-side thing — nothing is injected into the game and no Roblox server is touched — but each instance still needs its own account, and every account you use is still bound by the Roblox rules that already apply to it.
Does any of them work on Mac?
BetterStrap does — it ships a signed, notarized macOS build with the same FastFlags, mods and stats as the Windows one, on its own update feed. Bloxstrap, Fishstrap and Voidstrap are Windows projects, which is why Mac players searching for a bootstrapper usually come up empty. If you are on macOS, that is the practical difference that decides it.
Are FastFlags safe to use with any of these?
FastFlags are Roblox’s own client settings, written to your machine before the client starts, so a launcher that only sets them is changing your copy of the game and nothing else. That is the same mechanism in all four apps. What matters is which flags: the graphics, frame-rate and rendering flags these editors expose are client-side and uncontroversial, and BetterStrap validates flag names structurally and coerces values to the string form the engine parses.
Do I have to uninstall Bloxstrap before installing BetterStrap?
No, but only one of them should be handling your Roblox launches, because whichever one holds the roblox:// link handler is the one a Play button on the website will open. Install BetterStrap, let it take the handler, and keep or remove the other at your leisure. Both write Roblox’s ClientAppSettings.json fresh on every launch, so the last app to launch the game is the one whose flags are actually live.
Try the other bootstrapper
BetterStrap is free on Windows and macOS. FastFlags, mods, multiple clients, accounts and playtime, in one app.
Free · Windows 10 & 11 · macOS 11+ (Apple silicon & Intel) · On a Mac? Get the macOS build