The problem with streamer marketing

1M followers.
Zero sales.

You paid a JP streamer with 50,000 concurrent viewers to play your game. Downloads barely moved. Sound familiar?

The problem: you measured reach, not results.

Incrementality analysis — not vanity metrics
Steam review correlation
Wishlist vs. impulse buyer detection
Analyze a JP Streamer Free See how it works

No signup required to try. Steam-based data.

The $50,000/hour illusion

Top global streamers command $50k/hour (WSJ, 2019). JP top-tier streamers: ~¥2M per campaign. Yet most developers can't answer: "Did it actually work?"

👥
50,000 concurrent viewers
≠ 50,000 potential buyers
📊
2M Twitch followers
≠ game purchasing audience
📈
+300% watchtime spike
≠ incremental sales lift

JP StreamProof measures the incremental reviews that would NOT have happened without each streamer — with statistical confidence intervals.

How JP StreamProof works

Three levels of evidence — from simple to scientific

Lv.1

Pre-Post Lift

Compare Steam review velocity before and after each broadcast. Immediate answer: did this stream move the needle?

"Reviews increased 4.2× in the 48h after this stream vs. prior 7-day baseline."
Lv.2

Baseline-Adjusted Incrementality

Remove natural growth trends, weekend effects, and sale periods. What's left is the pure streamer contribution.

"Even after removing the Steam summer sale effect, this streamer drove +89 incremental reviews (95% CI: 72–108)."
Lv.3

Lag Curve Analysis

Identify whether a streamer drives impulse buyers (hours) or wishlist-to-sale converters (weeks). Choose the right one for your campaign timing.

"This streamer is a slow-burn converter. Use them 1 week before your sale — not on launch day."

What the data looks like

Illustrative examples based on real patterns from Steam + Twitch data

4.8×
lift ratio
Indie RPG (500 wishlists pre-launch)
JP streamer A — 8,200 avg concurrent
+340 Steam reviews in 48h
Impulse buyer driver — peak spike at hour 6
2.9×
lift ratio
Survival Game (global release)
JP streamer B — 2,100 avg concurrent
+89 incremental reviews
Wishlist builder — converted heavily on week 1 sale
6.1×
lift ratio
Card Game (JP localization)
JP streamer C — 4,700 avg concurrent
+201 incremental reviews
Perfect genre fit — card game audience converted same day

Simple pricing

Start free. Upgrade when the data proves its value.

Free
$0
Explore the tool
  • 5 game analyses/month
  • Lv.1 lift analysis
  • JP streamer rankings
  • Genre filters
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Studio
$79/month
For indie studios
  • Unlimited game analyses
  • Lv.1 + Lv.2 analysis
  • Lag curve (impulse vs. slow burn)
  • Budget optimizer
  • Slack alerts
  • Export reports
Start 7-day Trial
Publisher
$299/month
For publishers & agencies
  • Everything in Studio
  • Lv.3 multi-factor analysis
  • Confidence interval reports
  • Multi-game tracking
  • API access
  • Priority support
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Studio plan: 7-day free trial. Cancel anytime. Publisher plan: annual billing available.

Stop guessing. Start proving.

Join game studios already using JP StreamProof to find streamers that actually move their numbers.

Or try it now — no signup needed