---
title: "Reviews — em菌 - Flapen"
canonical_url: "https://flapen.com/research/jp/diy/em/reviews"
last_updated: "2026-08-08T10:12:46.406Z"
locale: en
meta:
  description: "Niche score 57/100 · ¥30.1M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
  "og:description": "Niche score 57/100 · ¥30.1M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
  "og:title": "Reviews — em菌 - Flapen"
---

# **em菌**

**Worth a look**

Shows a $30.1M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 100Growth 16Conversion 68Competition 56Returns 99Price range 0Avg price 0Brand share 21Review moat 91Quality gap 75

**Market size**

**Incredible****¥30.1M**

¥30.1M/yr · 131K searches

**Returns**

**Incredible****0.2%**

return rate — above 5% kills the launch gate

**Review moat**

**Great****181.5**

avg incumbent reviews — the moat a new listing must climb

**Quality gap**

**Great****4.3★**

avg incumbent rating — lower means beatable quality

**Conversion**

**Good****6.2%**

search→purchase rate — share of searches ending in a sale

**Competition**

**Good****51%**

top-5 click share — leaders hold, buyers still browse

**Brand share**

**Bad****92%**

top-5 brand share — brand-locked demand

**Growth**

**Bad****-17.1%**

90-day search growth — must beat 0% to launch

**Avg price**

**Bad****¥3728.14**

avg listing price — sweet spot $15–$100

**Price range**

**Bad****¥483.40–¥9629.89**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Signals**[** High Price**](https://flapen.com/research/niches?market=jp&signal=high_price "Avg price > $50")

## Reviews