Our verdict: Forth is the better pick if porn is the habit you’re quitting. Quitzilla tracks any habit; Forth is built for this one, with a short visual game for the moment an urge hits, Screen Time blocking for the apps and sites you choose, and progress a slip doesn’t erase. It also runs on iOS 16 and later, while Quitzilla needs iOS 26. Quitzilla suits you better if you want one tracker for several habits.
We make Forth, so we’re biased, but every fact about Quitzilla here comes from its own App Store listing and website. If something is out of date, tell us and we’ll fix it.
Why Forth comes out ahead
It helps in the moment, not just after
When an urge hits, Forth gives you something to do right then: a short visual game where you fit shapes, match patterns or rebuild a painting. The idea comes from craving research: in a 2015 study, three minutes of Tetris made cravings about 14 points weaker on a 0–100 scale, including cravings for sex.
Blocking is built in
Forth can block the apps and sites you choose through Apple’s Screen Time, with night schedules and 30-minute breaks, as part of the same subscription.
A slip doesn’t wipe you out
Finished Resets grow a world you keep, and a setback doesn’t take any of it away. Streak counters, by design, start over at zero.
Works on older iPhones
Forth runs on iOS 16 or later. Quitzilla’s App Store listing requires iOS 26 or later.
Forth and Quitzilla side by side
| Feature | Forth | Quitzilla |
|---|---|---|
| Price (US, as of October 2026) | $39.99 a year in the US. Eligible new subscribers get a 3-day free trial. | Free download with in-app purchases, listed from $5.99 a week or month to $29.99–$39.99 a year, or $89.99 lifetime. |
| Platforms | iPhone (iOS 16 or later) | iPhone (iOS 26 or later), Android |
| Main idea | A short visual game to open when an urge hits | A quit tracker for many habits, with money-saved rewards |
| Blocking | Included, through Apple Screen Time: apps and sites you choose, night schedules, 30-minute breaks | None described |
| Community | The Room: anonymous, moderated text posts for adults 18+ | Not a main feature |
| Account and data | No account. Your plan and progress stay on your phone. | No account required |
| Faith | Not religious | Not religious |
| App Store rating (US) | 5.0 from 6 ratings (launched September 2026) | 4.8 from 1,528 ratings |
Checked October 20, 2026 against each app’s US App Store listing and website. Prices change and vary by country; the price on each app’s paywall is the one that counts.
When Quitzilla might suit you better
You want to track several habits in one app and see the money you’ve saved.
How Forth works
When an urge hits, you open a Reset: a short, timed visual game where you fit shapes, match patterns, or rebuild a painting. There are no scores and no failing. Here’s the research behind it, and what else helps when an urge hits.
A quick assessment builds your plan. Forth can block the apps and sites you choose through Apple’s Screen Time, and it keeps your plan and progress on your phone. There’s no account.
Sources
- Quitzilla: Quitzilla: Quit Tracker on the App Store and www.despdev.com/privacy_policy_quitzilla_ios.html
- Forth: Forth: Quit Adult Content on the App Store
- Skorka-Brown, Andrade, Whalley and May, “Playing Tetris decreases drug and other cravings in real world settings,” Addictive Behaviors, 2015.
Questions
Why choose Forth over Quitzilla?
Quitzilla counts days for any habit. Forth is built for quitting porn: a short visual game when an urge hits, Screen Time blocking, and progress a slip doesn’t erase. It also runs on older iPhones.
Does Quitzilla block websites?
Its App Store listing doesn’t describe blocking (as of October 2026). Forth blocks the apps and sites you choose through Apple’s Screen Time.