Skip to content

Sleep Monitor: Sleep Tracker

Xi'an Monster Software Technology Co., Ltd

4.61star5,234 ratings

Health & FitnessSleep tracker app shelf$9.99–$49.99 · 10 tiersUpdated Aug 10, 2026
Biggest complaint · Billing
48.3%
14 of 29 negatives · store typical 32.1%
Recent reviews negative
11%
its 9 shelf rivals run 48% · 275 reviews held

Counted from real App Store reviews · 2026-08-24 · nothing estimated or modelled

Sleep Monitor: Sleep Tracker — App Store screenshot
Sleep Monitor: Sleep Tracker — App Store screenshot
Sleep Monitor: Sleep Tracker — App Store screenshot
Sleep Monitor: Sleep Tracker — App Store screenshot

Ratings.

4.5out of 5

5,237 ratings · Apple’s own count, fetched daily

5star4,265
4star496
3star157
2star64
1star255

3 decisions.

01

Watch billing

elevated · 48.3% of this app’s 29 negative reviews, against 32.1% typical store-wide.

How it compares
this app
48.3%
14 of 29
its shelf
45.7%
rivals only
store-wide
32.1%
typical
02

Watch limits & caps — recount before acting

high · 6.9% of this app’s 29 negative reviews, against 2.8% typical store-wide.

n = 2. Too thin to act on — we recount weekly.

How it compares
this app
6.9%
2 of 29
its shelf
4.6%
rivals only
store-wide
2.8%
typical
03

Protect performance

3.4% of this app’s 29 negative reviews, against 16.9% typical store-wide, which is normal for the store.

n = 1. Too thin to act on — we recount weekly.

How it compares
this app
3.4%
1 of 29
its shelf
9.6%
rivals only
store-wide
16.9%
typical

Accuracy is left out — the theme’s vocabulary is in this app’s own name.

The shelf in numbers

All 10 panel members · 2026-08-24 snapshot.

The whole shelf, counted

Every complaint across sleep tracker app, frequency-ranked from real App Store reviews — the gaps nobody on this shelf has fixed.

Read the sleep tracker app report
How this is counted

Every number is arithmetic over the reviews we hold, re-counted weekly — nothing modelled, nothing scored. Themes come from a frozen pattern classifier rather than a model reading reviews, so the same review always lands in the same bucket. Shares are of this app’s own recent negative reviews; the shelf figure is its rivals with this app excluded. The graded words have fixed cutoffs against the store’s typical rate: elevated from 1.15, high from 2, extreme from 3.5 times it. The page says what is broken and how it compares — never how to fix it, and never whether this app can win.