Comparison

StopSun vs Quitter App

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

Head to head
About

StopSun

Features
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Do you know how much UV your skin receives today? StopSun uses your Apple Watch and iPhone to automatically track and manage your UV exposure. See at a glance how much UV you received during outdoor activities, how long your sunscreen lasts, and the current UV Index. Key Features 1. Automatic UV Exposure Tracking (Apple Watch Integration) Using the ambient light sensor on Apple Watch, StopSun automatically detects when you are exposed to sunlight outdoors. Based on outdoor exposure data from the Health app, you can manage your UV exposure without manually logging it. Supported Models Apple Watch Series 6 or later / Apple Watch SE (2nd generation) or later / All Apple Watch Ultra models 2. Real-Time UV Index Check the real-time UV Index based on your current location. By combining exposure time with the UV Index, StopSun estimates the actual UV exposure your skin receives. 3. Sunscreen Timer & Live Activity No more guessing when to reapply sunscreen. With Live Activity, you can check your sunscreen duration in real time directly from the lock screen. 4. Personalized Alerts by Skin Type Based on the Fitzpatrick skin type, StopSun calculates the maximum UV exposure your skin can safely tolerate in a day. Receive smart alerts before your skin reaches a risk level.

About

Quitter App

Features
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Being a quitter is the whole point. Pick what you are quitting, press start, and Quitter walks you through withdrawal one honest day at a time: what today will probably feel like, why, what helps, and exactly when it gets easier. EIGHT WAYS TO QUIT Weed, cigarettes, vaping, alcohol, caffeine, sugar and social media each come with a researched day-by-day timeline. Or create a custom quit with its own name for anything else you want to put down. A REAL TIMELINE, NOT A PEP TALK Every phase of every plan tells you three things you can scan in seconds: • What to expect. The symptoms that are normal right now, so nothing feels like an emergency. • What helps. The moves that actually shorten the hard days. • What to skip. The traps people fall into at exactly this point. And you can read the whole road ahead in advance, so a bad day always has an end date. A SLIP IS NOT A RESET Your streak restarts, but your lifetime clean days, your longest streak and your savings are never erased. Quitter is built on how quitting actually works: attempt five is not failure, attempt five is the method. FOR THE HARD TEN MINUTES The Craving SOS screen gives you a breathing ball to follow, a five minute urge-surfing timer, and over a hundred short encouragements, with your own reasons for quitting dealt back to you at the exact moment you need them. HELP IS ONE TAP AWAY The home screen widget doubles as a panic button: tap it and you are already on the breathing screen. No unlocking, no navigating, no willpower spent finding the right button. There is a Craving now shortcut on the app icon too. EVERY WIN COUNTS, NOT JUST THE SLIPS Ride out a craving and Quitter quietly counts it. Most apps only ever record your failures; this one keeps score of the fights you won, and that number never goes down. WATCH THE NUMBERS GROW • Clean days, months and years, counted from your quit moment • Money saved, based on what the habit really cost you • Time reclaimed, for habits that ate hours instead of dollars • Milestones from 24 hours to one year, each celebrated once FEEL IT GETTING BETTER A one-tap daily mood check-in builds a graph that quietly climbs. On the days you doubt yourself, the line does the arguing. TALK IT OUT On iPhones with Apple Intelligence, ask the on-device companion anything about your quit. It knows what you are quitting and what day you are on, and it answers like a steady friend. The conversation never leaves your phone. PRIVATE BY DESIGN No account. No cloud. No analytics. No ads. Notifications never name your habit, not even with an emoji, because lock screens are semi-public. The widget shows just an emoji and a day count. What you are quitting is nobody's business but yours. FREE MEANS FREE No price, no ads, no subscription, no locked features, and nothing about you is collected or sold. You are trying to quit something; the app should not be another thing with its hand out. A note on safety: Quitter offers encouragement and general information, not medical advice. If you drink heavily every day, withdrawal can be medically dangerous. Please talk to a doctor before stopping suddenly.

Screenshots

StopSun4 screens
Quitter App4 screens

Verdict

The call

The clearest difference is update cadence: Quitter App at every 2 weeks against StopSun's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

StopSun ships an update every 6 weeks, Quitter App every 2 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard1 real difference · 7 level
StopSun versus Quitter App: the parameters behind the verdict, then further details
ParameterStopSunQuitter App
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 6 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS18.517.0 — better
Further details — not scored
Size24 MB4 MB
Age rating12+17+
DeveloperTaein KimMatthew Mesropian

In-app purchases

None

StopSun

No in-app purchases

None

Quitter App

No in-app purchases

Questions

Is StopSun free?
StopSun is free to download, with no in-app purchases.
Is Quitter App free?
Quitter App is free to download, with no in-app purchases.
Do StopSun or Quitter App have ads?
Neither StopSun nor Quitter App shows ads.
Which is updated more often, StopSun or Quitter App?
StopSun ships an update every 6 weeks, and Quitter App every 2 weeks. Most recently, StopSun was updated on October 25, 2026 and Quitter App on October 24, 2026.

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