Drop your track. Get a 0-100 virality score based on hook strength, tempo, energy, and brightness — plus a personalized roadmap of exactly what to change to maximize your viral potential.
Hook Strength · Tempo · Energy · Brightness · No upload required
ViralPulse AI measures the four acoustic properties that consistently predict viral performance on TikTok, Reels, and YouTube Shorts.
Does your song grab attention in the first 15 seconds? TikTok users decide in 2-3 seconds whether to keep watching. A strong hook spikes energy immediately.
💡 Front-load your best moment. Drop the chorus or a killer riff by second 10.
Songs in the 120-150 BPM range dominate TikTok and Reels. This tempo matches the natural scroll rhythm and works well with trending dance formats.
💡 Outside 120-150? Use pitch-preserve tempo editing to get closer without changing the key.
High RMS energy cuts through phone speakers and earbuds. Low-energy tracks feel flat and lose in-feed competition with louder content.
💡 Master to -14 LUFS integrated. Use parallel compression to raise perceived loudness without over-limiting.
High spectral brightness (energy above 3kHz) adds presence, excitement, and air. Dull-sounding tracks lose attention on small speakers.
💡 Add high-shelf boost at 10kHz (+2-3 dB) and presence boost at 3-5kHz in mastering.
TikTok viral songs share four acoustic traits: a strong hook in the first 15 seconds (energy spike that grabs attention), a tempo in the 120-150 BPM sweet spot (matches the default scroll pace), high RMS energy (cuts through phone speakers), and spectral brightness above 3kHz (presence and excitement). Songs that score high on all four signals are disproportionately likely to be used in viral videos.
ViralPulse AI analyzes four acoustic signals entirely in your browser: hook strength (RMS of the first 15 seconds vs. the track average — strong hooks spike early), tempo proximity to the 120-150 BPM range, overall energy level, and spectral brightness (high-frequency energy ratio). Each signal is scored 0-25 and summed to a 0-100 score. The score predicts acoustic viral potential, not marketing reach.
No. Your audio file is analyzed entirely in your browser using the Web Audio API. Nothing is sent to a server. The analysis is instant and completely private.
Scores above 75 indicate strong viral potential across all four signals. 55-75 is good with room to improve specific signals. Below 55 means one or more signals are significantly weak — the roadmap tells you exactly which ones and how to fix them.
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