Stop Guessing Your Steam Launch. Plan, Audit & Ship With Confidence.
LaunchOS for Steam is a standalone Windows workspace built for indie game developers. Forecast wishlists and net revenue, optimize your store page and Top 5 Steam tags, pass Valve’s build & demo QA checks, and execute an 8-week Next Fest plan—all offline in one clean app.
- Windows 10 & 11 (64-bit)
- Installer + Portable .exe Included
- Zero Telemetry • Local Data Only
- Unlimited Multi-Game Profiles
Most Indie Launches Fail Before Release Day
Blind Revenue Math
Rough spreadsheet estimates ignore Steam’s 30% cut, launch discounts, and ~25% VAT, refund, and regional pricing deductions.
Algorithm-Killing Tags
Putting broad ‘Vampire Tags’ (Indie, Action, Adventure, Casual, Early Access) in your Top 5 slots hurts Steam’s ‘More Like This’ recommendations.
Avoidable Review Rejections & Festival Chaos
Missed demo AppID/save isolation checks or misconfigured OBS stream specs waste valuable pre-launch momentum.
Everything You Need From Store Page to Launch Day
Four focused modules built specifically for Steam indie releases.
1. Wishlists & Earnings Forecaster
- Track progress toward the 7,000–12,000+ "Popular Upcoming" wishlist zone with daily velocity and days-remaining projections.
- One-click Steamworks CSV import and milestone logging with interactive cumulative growth and daily velocity charts.
- 3-Tier Revenue Simulator (Conservative 8%, Expected 11.5%, Strong 15%) calculating Week 1, Month 1, and Year 1 net take-home revenue after Valve’s 30% cut and optional 25% tax/refund/regional deductions.
2. Store Page & 20-Slot Tag Optimizer
- Interactive 100-Point Store Page Audit across 6 categories with live readiness verdicts (90+ Ready, 70–89 Polish, <70 Redesign).
- 3-Sentence Short Description Builder (Hook, Mechanics, Loop) with a 300-character counter and automated fluff/buzzword detector.
- 20-Slot Steam Tag Manager with genre presets and automatic warnings for Vampire Tags and Broad Top-3 tags.
- Custom Capsule Safe-Zone Previewer and modular BBCode Description Editor with one-click copy.
3. Valve Review & QA Checklist
- Rejection-prevention checklist covering common Steamworks build review failure points with copyable code/macro snippets.
- Demo Isolation Safety Checks (separate demo AppID, save-file isolation, overlay/upsell verification).
- Discipline Sign-Off Matrix and printable Pre-Submission QA Sign-Off Audit Certificate with Build Manifest ID tracking.
4. 8-Week Steam Next Fest Plan
- Chronological 4-phase roadmap (W-8 to W-6, W-4, W-2, Event Week) with actionable task checklists and success gates.
- Ready-to-copy Steam OBS Livestream Profile (1080p, 60 fps, 6000 kbps CBR, 2s keyframe, H.264, AAC 160 kbps / 48 kHz).
Built for Real Developer Workflows
Optional 1-Click Steam Sync
Paste a Steam Store URL or AppID to pull your public title, description, tags, capsule count, and price straight into your workspace.
Multi-Project Manager & JSON Backups
Switch between multiple games seamlessly, export portable .json backups anytime, and toggle Dark or Light UI themes.
100% Local-First & Private
No accounts, no subscriptions to manage inside the app, no analytics or telemetry. Everything stays locally on your machine.
LaunchOS for Steam (v4.2.0) — Full Windows Desktop Package
- LaunchOS-Setup.exe (Full Windows Installer with Desktop/Start Menu shortcuts & clean uninstaller)
- LaunchOS.exe (Portable single-file Windows executable — run anywhere without installing)
- All 4 Launch Tools Modules + Built-in Interactive Guided Tutorial
- Windows 10 & Windows 11 (64-bit) • Lightweight (~55 MB) • Offline-ready
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Frequently Asked Questions
What operating system is required?
Windows 10 or Windows 11 (64-bit). Requires Microsoft Edge WebView2 Runtime (already pre-installed on nearly all Windows 10/11 systems).
Do I need an internet connection or to log into Steam?
No. All data is stored locally on your PC with zero telemetry. An internet connection is only used if you choose to run the optional "Sync Steam Page" lookup for public store metadata.
Can I plan multiple games?
Yes. You can create, edit, switch, and back up unlimited game profiles inside the app.
Is LaunchOS affiliated with Valve?
No. LaunchOS for Steam is an independent developer planning utility by Dev Assist Studio and is not affiliated with, endorsed by, or certified by Valve Corporation.