Habit Tracker vs Protocol66
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Habit Tracker
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Habit Tracker helps you build routines that are maintained over time. Define clear habits, mark your daily checklist and see how your streaks grow. No distractions: just you and your goals. What can you do? Create habits with daily or weekly goals. Mark your checklist in seconds and see your streaks instantly. Activate reminders so as not to forget what is important. Review your progress with progress and trend (week and month). Organize habits by categories and priority. Dark mode and a fast, minimalist and noise-free interface. How does it work? Choose 1-3 key habits (e.g.: read 10 min, hydrate, train). Mark them every day and protect your streak. Watch your progress and adjust with small improvements. Repeat for 66 days and turn actions into "automatic". Designed for you Clean design: easy to use, even on busy days. Focus on perseverance and not on perfection. Simple statistics to maintain motivation. Mismly requires a paid subscription to unlock the full protocol and AI Coach. Choose Monthly (with a 3-day free trial), Annual, or a one-time Lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period; manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://mismly.com/privacy/
Protocol66
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66 days. 5 habits. Miss a day, start over. Protocol 66 is the science-backed alternative to extreme fitness challenges. Based on habit formation research โ not bro science โ it takes exactly 66 days to build lasting habits. THE RULES ARE SIMPLE - Pick 5 daily habits - Complete all 5 every day - Miss a day, restart from zero - Rest days are earned, not given WHY 66 DAYS? Research by Phillippa Lally at University College London found it takes an average of 66 days to form automatic habits. Not 21. Not 30. Not 75. THIS ISN'T FOR EVERYONE No streaks to protect you. No lives. No second chances. If you're looking for an app that goes easy on you, this isn't it. Ready to commit? -------------------------------------------------------------------------------- Privacy Policy: https://www.pocketapps.studio/protocol66/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Protocol66 at every 2 weeks against Habit Tracker's every 5 weeks. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Habit Tracker sells 3 in-app purchases, starting at $3.99 per month and Protocol66 sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Habit Tracker ships an update every 5 weeks, Protocol66 every 2 weeks. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.
| Parameter | Habit Tracker | Protocol66 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks | Every 2 weeks โ better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad โ better | iPhone |
| Requires iOS | 17.6 โ better | 18.0 |
| Further details โ not scored | ||
| Size | 5 MB | 35 MB |
| Age rating | 4+ | 12+ |
| Developer | Mismly LLC | POCKET APPS STUDIO PTE. LTD. |
In-app purchases
Habit Tracker
- Tracker Premium3 Days trial$3.991 Month
- Premium Annual$29.991 Year
- Premium Lifetime$59.99
Protocol66
- Pro Version3 Days trial$2.997 Days
- Pro7 Days trial$19.991 Year
- Lifetime Access$3.99
Questions
Is Habit Tracker free?
Is Protocol66 free?
Do Habit Tracker or Protocol66 have ads?
Which is updated more often, Habit Tracker or Protocol66?
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