i.Quit Smoking

The i.Quit Smoking app stands out by offering a depth of personalized tracking unmatched by standard quit-smoking aids. While many apps provide simple time and money counters, I focus on empowering your recovery with genuine scientific insight.

What truly sets me apart is my commitment to detailed, personalized data. Instead of generic milestones, my recovery tracking is built upon the user's historical smoking data and specific cigarette details. This allows the app to generate a highly personalized recovery timeline and accurately calculate the life and money you save, making your progress feel tangible and relevant to your own habit.

Crucially, i.Quit Smoking provides transparency into your health recovery by tracking four major toxins leaving your body, including harmful chemicals like Carbon Monoxide and the tobacco-specific carcinogen NNAL. Furthermore, I made this one of the few platforms that fully integrate Nicotine Replacement Therapy (NRT) input. This unique feature allows you to log patches, gums, or sprays, ensuring your progress is tracked accurately whether you're quitting cold turkey or using an NRT plan, giving you a complete and precise view of your journey to being nicotine-free.

Disclaimer

The data displayed within the i.Quit Smoking app are based on widely accepted scientific studies. Individual recovery rates are influenced by many factors and may differ from the timelines presented.

For personalized medical advice, diagnosis, or the best strategy to quit smoking, please consult with a qualified medical professional.

The main display provides all the crucial details of your recovery. By updating your health and financial metrics every single second, the app ensures you are constantly seeing improvement and feeling the maximum motivational boost from your commitment.

Graph

This shows you the 4 major chemicals graphically.

Chemical Percentage

This shows the current value of each chemical, as a percentage against it's overall value. You can click on any of the chemicals to highlight them on the graph.

Time Since Last Cigarette

This timer shows you how long you have gone without a cigarette.

Money Saved

This shows you how much money you've saved, by not smoking, since your last cigarette.

Life Saved

This shows how much of your own life you've extended, by not smoking, since your last cigarette. This is based on the latest gender-specific studies published in 2025.

Milestones

This shows your progress towards the following major healing milestones:

• Blood pressure & pulse return to normal
• Increase in oxygen levels
• Sense of smell & taste improves
• Damaged nerve endings start to regrow
• Bronchial tubes relax & energy increases
• Improved circulation & oxygenation
• Cardiovascular abilities are greatly improved
• Coughing & risk of respiratory infections are reduced
• Airways are much less inflamed
• Celia have regrown & lungs have significantly healed
• Risk of coronary heart diseases decreases by half
• Risk of a heart attack equals that of a non-smoker
• Risk of lung cancer decreases by half
• Risk of lung cancer equals that of a non-smoker
• Risk of coronary heart diseases equals that of a non-smoker
• Risk of smoking-related death equals that of a non-smoker

This shows you the 4 major chemicals, graphically for the current day. It includes an indicator of where the current time is.

This is the default graph, that shows you the 4 chemicals for yesterday, today and tomorrow. It includes an indicator of where the current time is. Seeing how much you will improve in the next day, motivates you to keep way from smoking.

This shows you the 4 chemicals for the last 3 days, today, and the next 3 days. It includes an indicator of where the current time is. This helps with your motivation, to see how much you've already recovered, as well as how much you will improve in the coming days.

Nicotine is a highly addictive chemical compound naturally found in the tobacco plant.

It is the primary addictive agent in cigarettes and other tobacco products, quickly reaching the brain after inhalation where it stimulates the release of pleasure-inducing neurochemicals, leading to the strong physical and psychological dependence that defines smoking addiction.

Nicotine itself is a poison and can have acute effects, but its most damaging role is driving the compulsion to smoke, which exposes the user to thousands of other toxic and carcinogenic compounds in tobacco smoke.

Your journey to being nicotine-free is the core of quitting, which is why the i.Quit Smoking app monitors your Nicotine levels. By tracking the time since your last cigarette or Nicotine Replacement Therapy (NRT) dose, you can see the precise moment your body is free of the drug and how the levels decrease, providing a clear, motivating goal on your path to full chemical freedom.

Cotinine is the major metabolite that the human body produces when it breaks down nicotine.

When nicotine enters the body, the liver metabolizes it into several substances, with Cotinine being the most abundant and stable compound. It is fundamentally a marker of nicotine exposure, and because it lingers in the body for days after nicotine is gone, Cotinine is the substance routinely measured in tests to determine whether an individual has recently used tobacco.

By tracking Cotinine levels, i.Quit Smoking gives you a longer-term indicator of your recovery than just nicotine alone. The presence of Cotinine confirms you have recently been exposed to tobacco or NRT, while seeing the level drop over a period of days is a powerful signal that your detox efforts are successfully progressing.

Watching your Cotinine level continuously fall and eventually reach zero provides conclusive proof that you are completely cleansing your body of tobacco byproducts, serving as a huge motivation boost for long-term cessation.

Carbon Monoxide (CO) is a colorless, odorless, and highly toxic gas, present in high concentrations in cigarette smoke.

Carbon Monoxide is dangerous because it rapidly binds to the hemoglobin in your red blood cells. Hemoglobin is the protein responsible for carrying oxygen throughout your body. CO binds to hemoglobin far more effectively than oxygen does—up to 250 times more tightly. This means that as you smoke, CO effectively chokes off the oxygen supply to your brain, heart, and muscles.

This displacement of oxygen is what leads to severe short-term effects like light-headedness and fatigue, but the long-term dangers are systemic. By starving your body of oxygen, CO damages the lining of blood vessels, forcing your heart to work harder to compensate, thereby increasing the risk of heart disease, stroke, and heart attack.

The good news is that Carbon Monoxide clears out of the bloodstream very quickly once smoking stops. i.Quit Smoking tracks this rapid elimination because seeing your CO levels drop back to the healthy range—a process that happens within hours—provides immediate, tangible proof of the profound and rapid benefit of quitting.

Watching your CO level normalize is one of the most instant and motivating rewards the app provides, confirming that you have successfully removed a major threat to your cardiovascular health and that your blood is once again capable of carrying oxygen efficiently.

NNAL (4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol) is a major, long-lasting metabolite of a potent, tobacco-specific carcinogen known as NNK.

[NNK (4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone) is one of the most powerful cancer-causing compounds found exclusively in tobacco and tobacco smoke. It does not occur naturally in the environment and is formed during the curing and processing of tobacco plants.]

NNAL is uniquely significant because it is created in the body only after exposure to NNK. While NNK is inhaled, NNAL is the persistent byproduct that lingers in your system, making it the most reliable biomarker for your total exposure to this particular cancer threat.

The presence of NNAL in the body is directly linked to an increased risk of lung cancer. NNK, and by extension its metabolite NNAL, is classified as a human carcinogen, actively contributing to tumor development in the lungs and other tissues. Tracking this chemical means you are monitoring the detoxification of a profound and specific threat to your long-term health.

NNAL is one of the most effective ways to track recovery because of its stability. Unlike Nicotine and Carbon Monoxide, which clear quickly, NNAL has a long half-life, meaning it remains detectable for several weeks after cessation. This stability allows the i.Quit Smoking app to provide a reliable measure of your sustained nicotine abstinence over the medium term.

By tracking the persistent presence and gradual elimination of NNAL, the app offers you powerful, data-driven proof that you are reversing damage caused by the most serious tobacco-specific carcinogens, moving toward a future where your cancer risk is significantly reduced.

You can add your last cigarette here, or continuously add every smoking session to track your habit. Ideally, you should be tracking your smoking at least 1 day before you quit, for improved accuracy of the chemicals.

You can choose the type of cigarette, based on its amount of nicotine

• Light Cigarette (≈0.8mg)
• Medium Cigarette (≈1.3mg)
• Strong Cigarette (≈1.8mg)

In many countries, the nicotine amount for the cigarettes are no longer printed on the packaging. In these cases, you can just select Medium Cigarettes.

The Nicotine Patch is a highly effective form of Nicotine Replacement Therapy (NRT). It delivers a controlled, low-dose stream of nicotine into your bloodstream over many hours. This steady dose helps ease your cravings and aids your body in gradually overcoming dependence.

The app goes beyond simple logging by analyzing two critical data points. It uses the nicotine dosage (mg) and the release duration (hours) of your patch. This detailed input allows the app to accurately calculate the estimated nicotine amount still circulating in your system.

Logging Nicotine Replacement Therapies (NRT) is a unique and central feature of the app. This is important because NRT changes how nicotine enters the body compared to smoking a cigarette. The app’s specialized tracking ensures your recovery progress remains scientifically accurate.

The Nicotine Gum is a fast-acting and flexible type of Nicotine Replacement Therapy (NRT). You chew the gum briefly until you feel a tingling sensation, then hold it between your cheek and gums. This method allows nicotine to be absorbed quickly through the lining of your mouth, giving you rapid relief from sudden, intense cravings when you need it most.

Logging Nicotine Replacement Therapies (NRT) is a unique and central feature of the app. This is important because NRT changes how nicotine enters the body compared to smoking a cigarette. The app’s specialized tracking ensures your recovery progress remains scientifically accurate.

The Nicotine Lozenge is a simple, discreet type of Nicotine Replacement Therapy (NRT) that works quickly. You place the lozenge in your mouth and allow it to slowly dissolve over about 20 to 30 minutes. As it dissolves, the nicotine is steadily absorbed through your mouth lining, which rapidly relieves cravings and helps manage withdrawal symptoms effectively.

Logging Nicotine Replacement Therapies (NRT) is a unique and central feature of the app. This is important because NRT changes how nicotine enters the body compared to smoking a cigarette. The app’s specialized tracking ensures your recovery progress remains scientifically accurate.

The Nicotine Inhaler is a unique type of Nicotine Replacement Therapy (NRT) that mimics the physical action of smoking. It uses a small, porous plug containing nicotine, which is inserted into a mouthpiece. As you puff on the mouthpiece, nicotine vapor is released and absorbed through the lining of your mouth and throat, offering both nicotine relief and a familiar hand-to-mouth ritual.

It is crucial not to mistake the Nicotine Inhaler for an e-cigarette or vape pen. Unlike vapes, the inhaler delivers nicotine without heating or burning the plug, which means it produces no combustion toxins or aerosolized liquid. It simply releases a measured dose of pharmaceutical-grade nicotine vapor absorbed solely in the mouth and throat, making it a medical product designed specifically for quitting.

Logging Nicotine Replacement Therapies (NRT) is a unique and central feature of the app. This is important because NRT changes how nicotine enters the body compared to smoking a cigarette. The app’s specialized tracking ensures your recovery progress remains scientifically accurate.

The Nicotine Nasal Spray is the fastest-acting form of Nicotine Replacement Therapy (NRT) available. The spray delivers nicotine directly into your nasal passages, where it is rapidly absorbed into your bloodstream. This quick delivery is especially effective for combating sudden and severe cravings, providing immediate relief similar to the rapid nicotine hit felt when smoking a cigarette.

Logging Nicotine Replacement Therapies (NRT) is a unique and central feature of the app. This is important because NRT changes how nicotine enters the body compared to smoking a cigarette. The app’s specialized tracking ensures your recovery progress remains scientifically accurate.

While the app supports the most common Nicotine Replacement Therapies (NRTs), we know the market is always changing. For this reason, an "Other" option is provided under NRT tracking. This allows you to log any less common or unknown NRT product you might be using. It also ensures the app remains effective and future-proofed whenever new NRT products become available.

Within the same window where you add a new nicotine intake, you can scroll down to view all the nicotine intakes you've added.

This is where you add details on your smoking habit. The more information you provide, the more accurate the details provided by the app.

Cigarettes Per Day

This is an important detail of your smoking habit. It is used to set the baseline of your body's nicotine. It is also used for the financial data, and to calculate your smoker category.

Cigarettes Per Pack

This is used to calculate your savings from not smoking.

Price Per Pack

This is used to calculate your savings from not smoking. You are able to select from a list of different currencies.

Your Gender

This is used to calculate the amount of life you lose for each cigarette you smoke. This is based on the latest gender-specific studies from 2025.

Years Of Smoking

This is used to calculate your smoker category.

Strength of Cigarettes

This is used to calculate the baseline nicotine amount in your body, and your smoker category.

Cigarettes Contain Menthol

This is used to calculate the diffusion and metabolism of Nicotine, which is affected by inhaled Menthol.

When all the necessary data are provided, you get a little summary at the end, of your smoking habit.

The summary of all your smoking data is shown in the Menu/Settings window. You can click on the 'Edit' button to make changes to your smoking data.

This app does not require access or store any personal data. It does use the following 3rd-party services, which have their own Privacy Policies.

• Google Ads

• Google Analytics

• RevenueCat (Payment Processor)

This app was built directly on my own experiences of multiple attempts to quit smoking. As a heavy smoker, it was one of the hardest changes I had ever made in my life.

In my first attempt, I tried distracting myself from thoughts of smoking. I thought that as long as I didn't think about it, I wouldn't be tempted. This worked for a while, leading me to believe I was being successful. However, as the withdrawal symptoms intensified, I easily made the mistake of having a social cigarette, which led to a complete relapse.

The second time around, I decided to be more mindful. I used a simple timer to monitor exactly how long I had gone without smoking. This made a dramatic difference. Being constantly aware of my commitment to quit helped me make deliberate decisions to keep away from situations that might cause me to relapse.

The inclusion of the chemical tracking in the app is designed to make you more aware of what to expect. You will know exactly when you should be most cautious and when to anticipate the biggest cravings.

The precision of the chemical tracking and the second-by-second updates to your quitting journey are meant to serve as powerful psychological motivation. Seeing how your body improves every second and knowing how far you've already come makes you less likely to relapse and lose everything. Essentially, this leverages the 'Sunk Cost' fallacy to your benefit: the more you have invested into something, the more you are committed to sticking with it.