Comparison

Stormsill vs ThunderSleep

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Stormsill

Features
Read full description

A living window you own. On the far side of the glass it's storming — real droplets bead, grow heavy, and race down the pane, wandering and snagging like the real thing. On your side there's a wooden frame, a warm lamp, and nowhere you need to be. Touch the glass and wipe it clean; the rain takes it back. Lightning flickers far away, and the thunder arrives late, soft and rolling, the way it does when the storm is somewhere else. A STORM THAT BREATHES No loops. Your storm swells into a squall, eases into steady rain, settles into a hush — over real minutes, on its own weather. Close the app tonight and it resumes exactly mid-breath tomorrow. The sky beyond the glass follows your real clock: dawn, grey day, dusk, night. NEVER HARSH Every sound is kept soft on purpose — rain with the clatter taken out, thunder that impresses without startling. Made for sleeping, reading, and studying next to. YOUR WINDOW REMEMBERS The sill book keeps a quiet diary: "an evening squall rolled in," "a soft hush settled." Days kept watch, storms witnessed. A sleep timer dims the pane and fades the sound — touching the glass brings the room gently back. FOUR ROOMS The nook is yours forever — warm oak and a potted plant. Supporters open the cabin (firelight that breathes, a steaming mug), the attic (candlelight and old books), and the library (a lamp over a shelf of spines). OUR PROMISES • Zero ads. Ever. • No notifications, no streaks, no guilt. The window just waits. • Nothing is collected. Not even analytics. • Free forever. One optional unlock (three extra rooms), cosmetic only, yours for good. For everyone who ever fell asleep to a rain video and wished they could touch the glass.

About

ThunderSleep

Features
Read full description

Real thunderstorms, rain, and ocean ambience — recorded to loop seamlessly, so the sound never breaks and never wakes you. ThunderSleep does one thing properly: it plays a beautiful soundscape and gets out of the way. No account. No sign-up. Nothing sent anywhere. 18 SOUNDSCAPES Storms rolling across mountain peaks, rain over open fields, thunder off a beach shoreline, a midnight storm in full voice, and soft ambient tones for meditation — across four categories: Thunder, Rain, Ocean, and Meditation. A SLEEP TIMER THAT FADES Choose anything from 15 minutes to All Night. When the time is up the sound fades out gently instead of cutting to silence, so it never jolts you awake. BUILT FOR THE DARK • Lock-screen playback controls with full artwork • A Live Activity on the Lock Screen and Dynamic Island — play, pause, skip, and the timer countdown, without unlocking • Keeps playing in the background, and the timer keeps running even if you close the app • Bedtime and wake-up reminders • Favorites, so tonight's sound is one tap away • Last night's rest from Apple Health, right on the timer screen • A design made for a dark room: deep blacks, soft glass, and gentle motion COMPLETELY FREE All 18 soundscapes, every timer up to All Night, the gentle 2-minute fade-out and the thunder wake-up sound are free for everyone. ThunderSleep is supported by ads, with no purchases and no subscriptions. PRIVACY ThunderSleep runs entirely on your device. There is no account, no backend, and no sync. Sleep data read from Apple Health never leaves your iPhone. — Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://racyinfotech.com/thundersleep/privacy.html

Screenshots

Stormsill4 screens
ThunderSleep4 screens

Verdict

The call

The clearest difference is ads: Stormsill at none against ThunderSleep's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Stormsill sells 1 one-off in-app purchase and ThunderSleep sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference Ā· 5 level
Stormsill versus ThunderSleep: the parameters behind the verdict, then further details
ParameterStormsillThunderSleep
PriceFreeFree
Update frequency—Every 5 weeks
AdsNo — betterYes
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better18.0
Further details — not scored
Size4 MB62 MB
Age rating4+4+
DeveloperLukasz PomianekVandita Vasani

In-app purchases

1 purchases

Stormsill

One-time1
  • Supporter Rooms$3.99
4 purchases

ThunderSleep

Subscriptions2
  • Premium Monthly$2.991 Month
  • Premium Annual$19.991 Year
One-time2
  • Remove Ads$2.99
  • Premium Lifetime$29.99

Questions

Is Stormsill free?
Stormsill is free to download, with in-app purchases available.
Is ThunderSleep free?
ThunderSleep is free to download, with in-app purchases available.
Do Stormsill or ThunderSleep have ads?
ThunderSleep shows ads; Stormsill does not.

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