---
title: "Trend — portable jet spa for bathtub - Flapen"
canonical_url: "https://flapen.com/research/us/beauty-personal-care/portable-jet-spa-for-bathtub/trend"
last_updated: "2026-08-10T22:26:16.811Z"
locale: en
meta:
  description: "Niche score 59/100 · $805K/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 59/100 · $805K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
  "og:title": "Trend — portable jet spa for bathtub - Flapen"
---

# **portable jet spa for bathtub**

**Worth a look**

Shows beatable incumbent ratings (3.9★), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 73Growth 7Conversion 17Competition 79Returns 42Price range 49Avg price 85Brand share 90Review moat 82Quality gap 96

**Quality gap**

**Incredible****3.9★**

avg incumbent rating — lower means beatable quality

**Brand share**

**Great****45%**

top-5 brand share — no brand owns this niche

**Avg price**

**Great****$71.76**

avg listing price — sweet spot $15–$100

**Review moat**

**Great****358.09**

avg incumbent reviews — the moat a new listing must climb

**Competition**

**Great****36%**

top-5 click share — an open shelf

**Market size**

**Good****$805K**

$805K/yr · 831K searches

**Price range**

**Okay****$25.94–$177.57**

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

**Returns**

**Okay****3.6%**

return rate — above 5% kills the launch gate

**Conversion**

**Bad****1.4%**

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

**Growth**

**Bad****-36.4%**

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

**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** Quality Gap**](https://flapen.com/research/niches?market=us&signal=quality_gap "Avg rating < 4.0") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")

## Trend