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Slendertone

Slendertone shows beatable incumbent ratings (4.1★), but soft demand (-12.0% this quarter) keeps it on the watch list.

Flapen Score

54
Worth a look
Market size 47Growth 19Conversion 30Competition 67Returns 64Price range 55Avg price 90Brand share 71Review moat 25Quality gap 90
This niche Category average

Is Slendertone profitable on Amazon?

According to Flapen's Amazon United Kingdom niche tracking, Slendertone is a £255K/yr Amazon United Kingdom market (181K searches/yr). The top 5 brands hold 63% of demand. Demand peaks in Jan–Feb. Verdict: Worth a look — 54/100.

Slendertone: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Worth a look. Search demand moved -12.0% over the last 90 days and 2.4% of searches end in a purchase.

£255K

revenue / yr

Units sold / yr5K
Search volume / yr-12.0%181K
Conversion rate2.4%
Avg price£59.34

Who owns the niche?

The top 5 brands hold 63% of demand, so 37% of the market is open.

37%

open market share

Brands · sellers19 · 36
Top-5 product click share45%
Open market37%
Avg brand age34 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.1★ — the gap to enter on.

0/100

page quality · 30 products

Sponsored placement97%
New entrants (1y)6· 2 succeeded
Avg rating4.1★
Avg reviews4,586

Top Slendertone products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products take 45% of clicks — established leaders, but buyers still shop beyond them.

£0£13K£25K£38K£51K1101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

Brands

19 falling

Sellers

36

Top-5 brand share

63%

Top 20: 100%

Top-5 click share

45%

Top 20: 87%

Open market

32%

  • EVOLAND18%
  • AUVON18%
  • Slendertone11%
  • SLENDERTONE9%
  • iWarmbase7%
  • ABFLEX6%

Slendertone demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume181KCVR2.4%Products30Brands19Top 5 Brands63%OOS Rate16.8%Rating4.1★Reviews4,586Avg BSR#175
8K6KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Jan, Feb · busiest ÷ quietest = 3.1×

Top Slendertone search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

  • ems muscle stimulator64K/yr
  • slendertone34K/yr
  • muscle stimulator22K/yr
  • ems16K/yr
  • slendertone belt22K/yr
  • slendertone abs belt4K/yr
  • electric muscle stimulator6K/yr
  • muscle stimulater machine14K/yr

What reviews say buyers love and hate about Slendertone

What buyers mention most, as a share of all reviews.

What buyers love

72% of reviews
Value For Money15%

Good for the money

Quality-Overall14%

Really high quality device

Ease Of Use13%

Delivered quickly easy to use

Muscle Pain Relief6%

It relaxes the muscles

Advertised Vs Actual Product5%

Seems to work as it should

What buyers complain about

55% of reviews
Functionality-Overall10%

I didnt believe in its effectiveness either

Durability9%

Broke and started shocking me after a few months

Quality-Overall7%

Really cheap and low quality product for the price

Instructions/User Manual/Troubleshooting5%

the instructions are poor

Charging5%

Doesnt charge or turn on

Slendertone return rate & reasons

Why buyers send it back, as a share of all return requests.

2.5%

Return rate

14%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Functionality-Overall
32%
2Defective Material/Parts
9%
3Joint Pain
6%
4Size-Overall
6%
5Advertised Vs Actual Product
5%

Common Slendertone questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Slendertone 54/100 on Amazon United Kingdom — Worth a look. The niche generates £255K/yr across 30 tracked products. 2 of 6 products launched in the last 360 days are still selling. Search demand moved -12.0% over the last 90 days.
Search demand for Slendertone on Amazon United Kingdom peaks in Jan–Feb, where the busiest month runs 3.1× the quietest.