Quit Smoking Apps That Actually Work: What the Evidence Shows

There are hundreds of quit smoking apps. Most are day counters with motivational quotes; a few build in tools with evidence behind them in other settings. This page is honest about how little the app-specific evidence shows — and about what an app is still good for.

This page is about the features. If you want the products themselves named and weighed — which of the best quit smoking apps are free, which have published trials behind them, and which one every roundup still recommends despite it having been withdrawn from both app stores — that comparison is kept separately and dated.

What the Research Actually Shows

The Cochrane review of mobile phone interventions (2019, 26 studies) found:

Automated text-message programmes work: they raised quit rates against minimal support (RR 1.54), on moderate-certainty evidence, and added to other support too
Smartphone apps have not been shown to work yet: pooling five trials of apps against lower-intensity support gave a risk ratio of 1.00 — no evidence of benefit — on very low-certainty evidence

The best-researched app, Smoke Free, has one trial against no app at all, and it found no difference. So an app is not a treatment. It can still be a useful tool alongside the things that are: medication and counselling.

Features Worth Using

These features carry techniques that help in other settings — the app itself is the delivery, not the evidence:

1. A craving tool you can open in the moment Timers, breathing, distraction. A craving usually passes within a few minutes, at most about 15 according to the NHS; anything that fills those minutes helps. Opening the app is itself a short delay.

2. Trigger logging Writing down when cravings came and what set them off builds your own trigger map, which you can then plan around.

3. Progress and money counters Seeing your smoke-free days and the money you've kept is motivating for many people, especially when it uses your own price and habit. Health milestones help if they are honest — check that the app says where each one comes from; see what happens when you quit for the sourced version.

4. Text-message support The one mobile format with good trial evidence. In the US, smokefree.gov runs free text programmes.

5. Community features Posting during a craving and getting a reply can help. There is little trial evidence either way.

Specific Apps

For named apps — NHS Quit Smoking in the UK, quitSTART from the US National Cancer Institute, Smoke Free and the commercial options — with their ratings, prices, availability and the trials behind them, see our dated comparison of the best quit smoking apps. The short version: the free government apps are sensible first downloads, and no app has shown it does the quitting for you.

What Apps Cannot Do

Apps cannot replace:

NRT or prescription medication — in the Cochrane reviews, NRT raised quit rates by about 50–60% and varenicline more than doubled them
Counselling — individual counselling, groups and quitlines all have trial evidence; in the UK, NHS Stop Smoking Services are free
People — a quit buddy or a counsellor notices things an app can't

How to Use an App Well

Set it up before quit day — your smoking rate, price and quit date, while you're calm
Open it during cravings — use the craving tool in the moment
Log your cravings — actively, so you learn your triggers
Don't rely on it alone — use it alongside NRT or a prescription medicine, and support if you can get it

FAQ

Do quit smoking apps actually work?

The evidence is weak so far. The Cochrane review found no evidence that smartphone apps raise quit rates (very low certainty), while automated text-message programmes did help. An app is best used as a tool alongside medication and support.

What is the best free quit smoking app?

In the UK, the NHS Quit Smoking app; in the US, quitSTART from the National Cancer Institute, with smokefree.gov's text programmes. See our comparison for details and dates.

Can an app replace nicotine replacement therapy?

No. NRT and prescription medicines have strong trial evidence; apps don't yet. Use an app to support, not replace, them.