What 5,014 reviews say people hate about sleep sound apps

We make a sleep sound app, Nightwool, so we wanted to know what goes wrong with the ones people already use. We collected 5,014 English-language reviews of 28 sleep sound and white noise apps from the App Store and Google Play, and counted what the unhappy ones complain about.

The answer is mostly not the sounds. Of the 1,794 one- and two-star reviews, 47% mention money: subscriptions, paywalls, prices or payments. 26% describe crashes, bugs or sound that stops, often in the middle of the night. 14% are about free trials that turned into charges, refunds or cancelling, and 13% about ads. Loops and volume together come to under 5%.

mention money: subscriptions, paywalls, prices

47%

describe crashes, bugs or sound that stops

26%

are about free trials that turned into charges

14%

complain about ads

13%

Below: the numbers, how we got them, and what to check before you pick an app.

The numbers at a glance

Share of 1,794 one- and two-star reviews that match each topic. A review can match several topics. The last column shows how many matches were actually about that topic when we read a sample by hand.

The base is 186 negative App Store reviews and 1,608 from Google Play. The loop row counts only complaints confirmed by reading all 40 matches.

How we counted

App Store reviews. 1,318 reviews of 16 apps from 12 English-language App Store countries, collected on 1 November 2026 from each app’s public review page (one exact duplicate removed). Apple chooses which reviews appear there, so they lean toward “most helpful” rather than newest, and they span 2008 to 2026 (about half are from 2020 or earlier).

Google Play reviews. 3,696 English reviews of at least six words from 21 apps in the US and UK, dated 3 November 2025 to 2 November 2026. We took the newest reviews and then added extra one- to three-star ones, so negative reviews are over-represented on purpose.

The apps range from simple white noise players to broader sleep apps that also play sounds, such as Calm, Sleep Cycle and Hatch.

The rules. Each topic is a list of words and phrases, matched regardless of case. The main ones:

• Money: subscription, paywall, premium, price, expensive, cost, pay, paid, purchase, lifetime, locked, “per month”
• Stopping: crash, freeze, glitch, bug, stops playing, cuts out, turns off, shuts off; “at night” also needs night, sleep, asleep, background, locked, screen off, minutes, hours or middle nearby
• Trials: trial, charged, refund, auto-renew, billed, cancel
• Ads: ads, adverts, commercials, ad-free
• Hard to use: interface, UI, confusing, complicated, clunky, cluttered, not intuitive
• Smaller topics: volume, too loud or quiet; account, log in, password; update near worse, ruined or broke; offline, internet, Wi-Fi; loop, repetitive, seams, short clips

The checks. Keywords catch things they shouldn’t. “Paid” also appears in “I paid and it crashes”, and “advert” appears in “the advert promised a free app”. So for each topic we read 15 or 20 random matches and noted how many were really about that topic. For loops and for apps changing their terms, we read every match.

1. Money: almost half of all complaints

Money shows up in 845 negative reviews, and in 65% of the negative App Store reviews. Not every mention is the main complaint (13 of 20 in our check were), but it is still far ahead of anything else.

Three patterns repeat. The first is a free version with almost nothing in it: “Everything is premium. If you don’t intend on going premium, don’t even waste your time” (Calm, 2018). The second is a subscription for something people see as simple. A White Noise Generator reviewer would happily pay a one-time fee to remove ads, “but a weekly subscription?” One Calm reviewer wrote: “why do you need to create an account and a payment plan to play white noise?”

The third pattern stings most: apps that changed the deal. We read every review that matched words like “used to be free” or “paid, now locked” and confirmed 52 where sounds or features someone had used, or had paid for, were later locked or moved to a subscription. 27 of the 52 were about BetterSleep, including this one:

“every sound was free. Now 95% of them are locked behind a paywall.”

BetterSleep review

What to look for:

• Before starting a trial, scroll through the library and count what is free. If the free part is one sound or one story, you are being asked to judge the app by its paywall.
• Check the listing’s in-app purchases. A one-time or lifetime option means you aren’t renting the sound forever.
• Read the most recent one-star reviews and search them for “used to be free”. It tells you how the developer treats existing users.

2. The sound stops in the night

460 negative reviews (26%) describe crashes, bugs or sound that stops, and 167 (9%) specifically say it stops at night, in the background or after a set time. For a sleep app this is the worst failure, because the change itself is what wakes you. 74 reviews mention both a stop or bug and waking up or silence.

The wording is strikingly consistent:

“The app shuts off in the middle of the night. The silence wakes me up.”

White Noise Lite review

“For me the sudden silence wakes me instantly.”

Relax Rain review

This matches what sleep research says about noise in general: a sleeping brain reacts to change, not to steady sound, which we cover in why some people need noise to sleep.

This complaint is mostly an Android one in our data (10% of Google Play negatives against 4% on the App Store). Android phones limit what apps can do in the background to save battery, and an app has to be built to work with that.

Several reviewers say they already did what the developer suggested: “stops playing overnight even with battery optimisation turned off” (Relax Rain). All 36 battery mentions came from Google Play. In a sample, about half were about the app stopping despite changed battery settings, and the rest about battery drain.

What to look for:

• Test any app for a full night during the free period, with the screen off and the phone locked, before you pay.
• On Android, an app that keeps playing should normally show a notification with play controls while it runs.
• Search recent reviews for “middle of the night” and “shuts off”. If many people report it after the latest update, wait.

3. Free trials that turn into charges

251 negative reviews (14%) are about trials, charges, refunds or cancelling, and our hand check found this one of the most precise topics (19 of 20). Most are not about fraud. They are about a trial ending without warning: “Charged the subscription without a warning that my trial was ending” (Calm, 2019). Others describe a free trial that was required just to try the app, or a refund they struggled to get.

What to look for:

• Note the trial end date the moment you start, and set a reminder for two days before.
• Cancel in the store, not by deleting the app. On iPhone: Settings, your name, Subscriptions. On Android: the subscriptions page in Google Play. Apple advises cancelling at least 24 hours before a trial ends, and Google points out that uninstalling an app does not cancel its subscription.
• Prefer apps that tell you when the trial ends, and what it will cost, before you confirm.

4. Ads in an app you use to fall asleep

238 negative reviews (13%) complain about ads, and 232 of them are from Google Play. Ads in a sleep app are worse than ads elsewhere because they can make sound and light up the screen. Reviewers describe ads that play while they try to fall asleep, ads they could not close, and “fake close buttons” (Relax Rain). Others watched a favorite app add ads after years: “why does a white noise machine have ads now?” (White Noise Generator).

Ad complaints cluster more than most: 17 apps had at least one, but three apps accounted for 56% of them.

What to look for:

• On Google Play, the listing says “Contains ads” under the app name. Treat it as a reason to test the free version at bedtime, not just in the daytime.
• Check whether ads can appear while sound is playing, or only when you open the app.
• If you pay to remove ads, check recent reviews for people who paid and saw ads return. We found several.

5. Hard to use, accounts and bad updates

Smaller, but persistent: 95 reviews (5%) call the app confusing, cluttered or hard to navigate, and 44 of those are about the Hatch app. 43 (2%) complain about accounts and logins, from being asked to create one to play white noise to being locked out of a paid account. And 37 (2%) say an update made the app worse. That last one is 7% of the App Store negatives, where the reviews span many years and versions.

Internet and Wi-Fi complaints (37 matches) are mostly about one product: 23 were about the Hatch app, which controls a sound machine over the home network.

What to look for: Can you start your usual sound in two taps from opening the app? Does it work without an account? Does it work in airplane mode? Try all three before you rely on it.

6. The sound itself: loops, volume and timers

This is where we expected more complaints than we found. We read all 40 reviews that matched loop-related words. 28 were real complaints about repetition, and 23 described audible loop points or very short clips: a noticeable pause each time the track restarts, a hitch every 30 seconds or so, or “only 30 seconds for loop” (Portal, 2020). 17 of those 23 were about one Android app.

So audible loops are not a common complaint, but where they exist, people notice. One reviewer described a looping sound as “like a ticking clock or rhythmic snoring” (BetterSleep, 2018). If you can hear the seam, you can’t stop hearing it. Our article on rain sounds for sleep goes into why long recordings matter for nature sounds.

RainListenLoadingPlaying

Volume complaints (51, about 3%) were mostly about volume jumping on its own, sliders that don’t work, or sounds that are too quiet even at full volume. The timer came up in 58 negative reviews, but only about half of a sample were complaints about the timer itself.

What to look for:

• Listen to your favorite sound for five minutes with headphones. If you hear the same bird or drop at a fixed interval, it will get louder in your head at night.
• Check that you can set a volume that stays put, and keep it low. Our guide to safe volume for white noise has the numbers.
• A timer should fade out slowly rather than cut to silence, for the same reason a stopping app wakes you.

What five-star reviews praise

For the 2,272 five-star reviews we used narrower phrases (for sleep: “helps me sleep”, “fall asleep”, “sleep better”), so the shares are conservative:

In a check of 10 random matches each, 10 of 10 were on topic for sleep, mixing and ease of use, and 9 of 10 for the free version and for playing all night. Tinnitus is inflated by a dedicated tinnitus app (26 of the 70).

The praise mirrors the complaints: people thank apps for doing the simple job well and for a free version that is actually usable. One White Noise Lite reviewer put it plainly:

“The free version has everything I need without any annoying ads.”

White Noise Lite review

A checklist before you choose

Put together, the reviews suggest testing these during an app’s free period:

1. What is free, permanently? Count the free sounds and look for a one-time purchase option.
2. Does it play all night? One full night, screen off, phone locked.
3. When does the trial end, and what then? Reminder set, cancellation path known.
4. Any ads, and when do they play? Especially on Android.
5. Can you start your sound in two taps, without an account, offline?
6. Can you hear a loop? Five minutes with headphones.
7. Does the timer fade out?

We built Nightwool around this list: no ads, no account, all sounds play offline, nature recordings play as random sections with no fixed loop point, the sleep timer fades out slowly, and eight sounds work without Premium. It’s out now on Android and coming soon to iPhone, and the checklist works for any app. If you are still deciding what kind of sound to use, start with white, pink or brown noise or browse all the sounds.

Questions

What do people complain about most in sleep sound apps?

Money. In our sample of 1,794 one- and two-star reviews, 47% mentioned subscriptions, paywalls, prices or payments. Next came crashes and sound stopping (26%), free trials that turned into charges (14%) and ads (13%). Complaints about how the sounds actually sound were rare.

Why does my sleep sound app stop in the middle of the night?

Phones close or pause apps in the background to save battery, and an app has to be built to keep playing through that. Reviewers often say the app kept stopping even after they changed battery settings, which points to the app, not the user. Test any app for a full night before you pay for it.

How do I avoid being charged after a free trial?

Write down the date the trial ends and set a reminder a day or two before. Cancel in the store, not by deleting the app: on iPhone in Settings, your name, Subscriptions; on Android in the Google Play subscriptions page. Apple advises cancelling at least 24 hours before the trial ends. Google notes that uninstalling an app does not cancel its subscription.

How reliable are these numbers?

They are keyword counts with hand checks, not a survey. The reviews are English only, the App Store set is the one Apple chose to show, and the Google Play set was weighted toward negative reviews. Treat the numbers as a ranking of common complaints, not as precise shares of all users.

Sources

• Apple Support, “Cancel a subscription from Apple”: https://support.apple.com/en-us/118428
• Google Play Help, “Cancel, pause, or change a subscription on Google Play”: https://support.google.com/googleplay/answer/7018481
• Review data: public App Store review pages (collected 1 November 2026) and Google Play reviews (collected 3 November 2026), analyzed by us. Quotes are from public reviews, shortened, without reviewer names.