---
title: "Reviews — ph測定器 - Flapen"
canonical_url: "https://flapen.com/research/jp/diy/ph/reviews"
last_updated: "2026-08-08T10:58:08.944Z"
locale: en
meta:
  description: "Niche score 61/100 · ¥20.0M/yr market · 192K searches/yr · ¥2798.40 avg price. Clears our launch bar. Data updated Jul 2026."
  "og:description": "Niche score 61/100 · ¥20.0M/yr market · 192K searches/yr · ¥2798.40 avg price. Clears our launch bar. Data updated Jul 2026."
  "og:title": "Reviews — ph測定器 - Flapen"
---

# **ph測定器**

**Launch it**

A $20.0M/yr market growing +0.6% this quarter with returns at 0.6% — clears our launch bar.

Market size 100Growth 26Conversion 46Competition 62Returns 97Price range 0Avg price 0Brand share 55Review moat 73Quality gap 97

**Market size**

**Incredible****¥20.0M**

¥20.0M/yr · 192K searches

**Quality gap**

**Incredible****3.8★**

avg incumbent rating — lower means beatable quality

**Returns**

**Incredible****0.6%**

return rate — above 5% kills the launch gate

**Review moat**

**Good****589.06**

avg incumbent reviews — the moat a new listing must climb

**Competition**

**Good****48%**

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

**Brand share**

**Good****72%**

top-5 brand share — brands hold most of the demand

**Conversion**

**Okay****3.7%**

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

**Growth**

**Okay****+0.6%**

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

**Avg price**

**Bad****¥2798.40**

avg listing price — sweet spot $15–$100

**Price range**

**Bad****¥381.72–¥12536.52**

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

**Signals**[** Quality Gap**](https://flapen.com/research/niches?market=jp&signal=quality_gap "Avg rating < 4.0") [** High Price**](https://flapen.com/research/niches?market=jp&signal=high_price "Avg price > $50")

## Reviews