Quick Comparison Table
| Feature | Delta Executor | KRNL | Winner |
|---|---|---|---|
| Script Execution Speed | Gloop engine delivers consistently low injection latency on all three platforms. | Mature injection engine with stable, predictable performance. | |
| UNC Score | 94% UNC measured in our April 2026 benchmark. | 87% UNC in the same benchmark. | |
| Platform Support | Windows PC, Android 8+, iOS 14+. | Windows only. | |
| Stability & Track Record | Stable across 18 months of active development. | Strongest stability story in the ecosystem. | |
| Byfron / Anti-Cheat Response | 24-hour median Byfron patch response in Q1 2026. | 4-7 days typical Byfron patch response across three Q1 2026 update cycles. | |
| Non-Byfron Game Compatibility | Runs smoothly on Byfron-enabled and non-Byfron games alike. | On games that have not enabled Byfron, KRNL is arguably more reliable than any other PC executor — the stable engine rarely hiccups and the key system is the only friction. | |
| Key System | One ad-link unlock via Linkvertise or Lootlab. | Linkvertise key with occasional additional pages depending on region and ad inventory. | |
| Safety & Anti-Detection | VirusTotal baseline clean. | Clean VirusTotal profile and strong community trust built over 6+ years. | |
| Update Speed After Roblox (Non-Byfron) Patches | Typically updates within 4-8 hours of major Roblox client patches. | Variable — sometimes updates within hours, sometimes takes 1-2 days. | |
| Community & Longevity | 1. | One of the largest and oldest communities in the ecosystem. |
What is Delta Executor?
Delta Executor is the only Tier S Roblox executor in our Q1 2026 benchmark, with a Delta Readiness Score of 90.6. It reports 94% UNC as of April 2026, ships cross-platform on Windows, Android, and iOS from a single dev team, and averages a 24-hour Byfron patch response. Delta is free at every tier with an ad-gated 24-hour key system, and launched in Q4 2024 into the post-Byfron market.
What is KRNL?
KRNL is the longest-running free PC executor in the ecosystem, shipping continuously since 2019. It reports 87% UNC and scored DRS 67.3 (Tier C) in our Q1 2026 benchmark. KRNL is Windows-only, free, and uses a Linkvertise-style ad-gated key system. Its strongest attribute is stability — the injection engine has changed very little in three years, resulting in one of the lowest crash rates in the category. Its weakest is Byfron patch response, which averaged 4–7 days across the three update cycles we measured in Q1 2026.
Detailed Feature Comparison
Script Execution Speed
Delta Executor
Gloop engine delivers consistently low injection latency on all three platforms. Typical script load time under 2 seconds on PC. No perceptible impact on Roblox frame rate during heavy scripts.
KRNL
Mature injection engine with stable, predictable performance. Slightly faster than Delta on simple scripts (the Lua VM has been tuned across 6+ years). Indistinguishable on anything complex.
UNC Score
Delta Executor
94% UNC measured in our April 2026 benchmark. Covers every mainstream API — getgenv, hookfunction, getrawmetatable, writefile, most introspection helpers.
KRNL
87% UNC in the same benchmark. Solid coverage for typical community scripts but misses a handful of newer debug and hook APIs that advanced scripts increasingly use. Some Blox Fruits update-30+ scripts fail on KRNL that run cleanly on Delta.
Platform Support
Delta Executor
Windows PC, Android 8+, iOS 14+. Same feature set at 94% UNC across all three platforms. No other free executor ships cross-platform at this UNC parity.
KRNL
Windows only. KRNL has never shipped an Android or iOS version. Users who play on phone must pair KRNL with a separate mobile executor.
Stability & Track Record
Delta Executor
Stable across 18 months of active development. No catastrophic outages reported in Q1 2026. Team has shipped cross-platform from day one without breaking reputation.
KRNL
Strongest stability story in the ecosystem. Core injection engine unchanged across 6+ years. Users who prioritize "works every time I open it" over cutting-edge UNC consistently favor KRNL. The Byfron transition weakened its on-patch-day reliability, but outside of patch cycles, KRNL remains the most predictable executor available.
Byfron / Anti-Cheat Response
Delta Executor
24-hour median Byfron patch response in Q1 2026. Mobile Hyperion response averages 24-72 hours depending on platform. Update channel runs through Delta Discord with push notifications each cycle.
KRNL
4-7 days typical Byfron patch response across three Q1 2026 update cycles. This is the biggest gap in the comparison. KRNL is effectively non-functional on Byfron-enabled games for roughly a week after each Roblox anti-cheat update.
Non-Byfron Game Compatibility
Delta Executor
Runs smoothly on Byfron-enabled and non-Byfron games alike. Delta's injection approach does not rely on Byfron presence or absence — works the same way regardless.
KRNL
On games that have not enabled Byfron, KRNL is arguably more reliable than any other PC executor — the stable engine rarely hiccups and the key system is the only friction. Many long-time KRNL users play exclusively on non-Byfron games to sidestep the patch-response issue entirely.
Key System
Delta Executor
One ad-link unlock via Linkvertise or Lootlab. Key valid for 24 hours. End-to-end under 60 seconds for users who know the flow.
KRNL
Linkvertise key with occasional additional pages depending on region and ad inventory. Key valid for 24 hours like Delta. Typical flow 60-180 seconds — noticeably longer than Delta, with more variance.
Safety & Anti-Detection
Delta Executor
VirusTotal baseline clean. Zero documented ban waves attributed to Delta across PC, Android, and iOS in 2026. Injection signatures rotated before each release.
KRNL
Clean VirusTotal profile and strong community trust built over 6+ years. No confirmed ban waves in 2026. Some older Windows Defender signatures still flag historic KRNL artifacts on disk; the current build is clean but legacy reputation issues occasionally surface.
Update Speed After Roblox (Non-Byfron) Patches
Delta Executor
Typically updates within 4-8 hours of major Roblox client patches. Team front-loads beta-build compatibility testing.
KRNL
Variable — sometimes updates within hours, sometimes takes 1-2 days. The small dev team does not have the 24/7 response capacity of larger-funded executors.
Community & Longevity
Delta Executor
1.7M+ cumulative downloads. Active Discord with developer presence in public channels. Growing fast but a newer community (launched Q4 2024).
KRNL
One of the largest and oldest communities in the ecosystem. Discord activity span 5+ years. Community-maintained documentation, third-party script hubs, and YouTube tutorial coverage all cluster around KRNL more than any other free executor. Institutional knowledge is unmatched.
Which Should You Choose?
The best executor depends on your specific needs. Here are our recommendations for different scenarios:
Best for cross-platform users
Delta Executor
KRNL is Windows-only. Delta ships at 94% UNC on PC, Android, and iOS — the only free executor that covers all three.
Best for Byfron day-one support
Delta Executor
Delta averages 24-hour Byfron patch response. KRNL averages 4-7 days. If you play Byfron-enabled games, Delta is the default choice; pair with Wave or Electron for the rare cycles Delta lags.
Best for non-Byfron game reliability
KRNL
On games without Byfron, KRNL's mature injection engine is arguably the most reliable option in the category. If your favorite games have not enabled Byfron, KRNL's stability advantage matters more than Delta's patch-speed advantage.
Best for Android or iOS users
Delta Executor
KRNL has no mobile version. Delta Android and Delta iOS run at the same 94% UNC as the PC build.
Best for long-time Roblox scripters
KRNL (or tie)
KRNL's 6+ year community has accumulated tutorials, hubs, and institutional knowledge that no newer executor can match. If you have years of KRNL-specific workflow, the switching cost may not be worth it — keep KRNL for familiar games and use Delta for new Byfron-heavy titles.
Best for newest community scripts
Delta Executor
Scripts released in 2026 increasingly assume APIs only available at 90%+ UNC. Delta covers those; KRNL does not. For Blox Fruits, Fisch, and other actively-updated games, Delta has a compatibility edge.
Best for beginners on PC
Delta Executor
Delta has a cleaner UI, a faster key flow, and dedicated documentation for new users. KRNL is more opinionated and assumes prior executor experience.
Frequently Asked Questions
Both are safe. VirusTotal baselines are clean on both; neither has been tied to ban waves in 2026. KRNL has a longer operational history (since 2019), which some users weigh as a trust signal. In terms of code safety and community reputation, there is no meaningful difference today.
No. KRNL is Windows-only as of April 2026, with no public plans for a mobile version. If you play Roblox on phone or tablet, KRNL is not an option — Delta is the only executor that ships at high UNC across PC, Android, and iOS simultaneously.
Delta at 94%, KRNL at 87%. The 7-point gap matters for newer advanced scripts that use modern debug and hook APIs — KRNL misses a subset of those. For typical public hub scripts, both work.
KRNL has a small dev team relative to Delta and Wave, and its injection approach is older — which makes it more stable outside of Byfron events but slower to adapt when Byfron changes its techniques. Expect 4-7 day patch windows after each Byfron update; this is why KRNL users often keep a second executor for patch-day coverage.
Yes — install both on the same machine. Do not run them simultaneously against the same Roblox client; they will conflict during injection. A common setup: Delta as daily driver, KRNL for non-Byfron games or when Delta is between patches.
No. Sites advertising "KRNL Mobile" or "KRNL Android" are impersonators and should not be trusted — no official mobile KRNL build exists. If you need an Android executor, consider Delta Android, Arceus X Neo, or Fluxus Android.
Switch if you play Byfron-enabled games frequently, play on multiple devices, or run recent community scripts. Stay on KRNL if you play older non-Byfron games, have 5+ years of KRNL-specific workflow, or value the 6-year community knowledge over faster patches. Many users keep both — Delta primary, KRNL for specific games.
Delta ships more frequent releases — typically 2-4 per month for Byfron, Roblox client, and feature updates. KRNL ships less often, generally 1-2 per month with a heavier emphasis on stability over feature velocity. This matches their philosophies: Delta optimizes for current-Roblox compatibility, KRNL optimizes for not breaking what already works.
Final Verdict
Delta Executor wins 5 out of 10 comparison categories. With superior UNC scores, faster updates, broader platform support, and a simpler key system — Delta is our recommended choice for most users in 2026. KRNL remains a solid alternative for specific use cases.