Comparison

66 Days vs Workout Planner Pro+

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

Head to head
About

66 Days

This app helps you build lasting habits by encouraging daily repetition over a 66-day period. Set project-specific goals and track your progress with features like memos, photos, and notifications.

Highlights
  • 66-day habit building system
  • Project-based goal setting
  • Daily progress tracking
  • Memo and photo recording
  • Dark mode support
  • Push notifications
Features
Read full description

According to a landmark study by University College London (UCL), it takes an average of 66 days for a new behavior to become an automatic, lifelong habit. You don't need extreme willpower or superhuman effort. By repeating small, consistent actions every day, your brain naturally transforms them into effortless routines. 66 Days is designed to help you organize your life goals into actionable projects, maintain daily streaks, and conquer the 66-day milestone to transform your lifestyle. [ 66 Days Key Features ] 1. Project-Based Habit Building • Set meaningful goals like 'Lose 10 kg' or 'Read 20 Books' and attach daily micro-actions (e.g., 30 push-ups, read 15 mins). • Completing just one habit action per day keeps your streak alive! 2. Break Bad Habits & Quit Tracker • Track your clean streaks for quitting smoking, junk food, procrastination, or screen time. • Log reflections when overcoming cravings and watch your milestone gauges grow. 3. Insightful Analytics & Milestones • Visualize your consistency with heatmap calendars, weekly trends, and overall statistics. • Reach 66 days to enshrine your achievement in the permanent 'Success Collection' and unlock badges. 4. Personalized Cards & iOS Widgets • Customize each habit card with custom photos, elegant color palettes, and blur themes. • Stay on top of your daily routines directly from your Home Screen with beautiful widgets. 5. Privacy & Biometric Lock • Keep your personal habit journal safe with Face ID and Touch ID biometric locking. 6. Lifetime Access & Premium • Unlock all premium features permanently with a single one-time purchase—no subscription stress. Start today. In 66 days, you will meet a completely new version of yourself! Terms of Use (EULA): https://66days.epipherse.com/terms/ Privacy Policy: https://66days.epipherse.com/privacy/

About

Workout Planner Pro+

Create personalized fitness plans, track your progress, and log detailed workout results. This customizable planner supports strength training, yoga, and general fitness, making exercise management simple for all levels. Save daily measurements, photos, and back up your data.

Highlights
  • Personalized workout plan creation
  • Customizable exercise parameters
  • Workout calendar and scheduling
  • Activity and progress tracking
  • Daily measurement and photo logging
  • Data backup and restore
  • Workout sharing
Features
Read full description

Do you like sport? Our workout planner is one of the best strength training, yoga, and fitness planner. You can create your personal workout plan, store your workout results and check history. Out planner is fully customizable and is a good choice for beginners and professionals. It is very easy to use. Training has never been easier with our workout calendar and workout history. Main features: - Create only needed exercises - Build training from different exercises - Customize attempts, repetitions, weights, quantity, time, etc - Schedule your training with a calendar - Use colors for different workouts - Track activity during training. You will not forget it is the second or third attempt - Save important daily details (weights, height, waist, chest, biceps size, etc) - Save your daily photos - Backup/restore data - Share your details Supported languages: English, Russian, Spanish, Hindi, Portuguese, Indonesian, German, Bengali, French, Italian, Vietnamese, Chinese Simplified (Ages 5+)

Screenshots

66 Days4 screens
Workout Planner Pro+4 screens

Verdict

The call

The clearest difference is price: 66 Days at Free against Workout Planner Pro+'s $4.99. 66 Days also leads on update cadence (every 3 weeks vs every 2 months). Workout Planner Pro+'s advantage is in-app purchases (none vs 5) and iOS requirement (15.0 vs 18.0). On review sentiment, ads 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

66 Days is free to download; Workout Planner Pro+ costs $4.99 up front. 66 Days sells 5 in-app purchases, starting at $1.99 per month. Workout Planner Pro+ asks for nothing beyond the download.

UpkeepUpdate frequency

66 Days ships an update every 3 weeks, Workout Planner Pro+ every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
66 Days versus Workout Planner Pro+: the parameters behind the verdict, then further details
Parameter66 DaysWorkout Planner Pro+
PriceFree — better$4.99
Rating4.1 (9 ratings) — better—
Positive reviews72.9% of reviews — better66.7% of reviews
Number of ratings9 — better—
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium — betterPaid
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS18.015.0 — better
Further details — not scored
Size19 MB75 MB
Age rating4+4+
DeveloperEpiphersesiarhei yatsuk

Customer experience

66 Days

All ratings9 ratings
Positive66.7%
Neutral11.1%
Negative22.2%
Written reviews48 reviews
Positive72.9%
Neutral10.4%
Negative16.7%

Workout Planner Pro+

Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

5 purchases

66 Days

Subscriptions3
  • Premium 1 Month$1.991 Month
  • Premium 3 Month$4.993 Months
  • Premium 1 Year$9.991 Year
One-time2
  • Project Streak Recovery$2.99
  • Premium Lifetime$22.99
None

Workout Planner Pro+

No in-app purchases

Questions

Is 66 Days free?
66 Days is free to download, with in-app purchases available.
Is Workout Planner Pro+ free?
Workout Planner Pro+ costs $4.99, with no in-app purchases.
Do 66 Days or Workout Planner Pro+ have ads?
Neither 66 Days nor Workout Planner Pro+ shows ads.
Which is updated more often, 66 Days or Workout Planner Pro+?
66 Days ships an update every 3 weeks, and Workout Planner Pro+ every 2 months. Most recently, 66 Days was updated on November 2, 2026 and Workout Planner Pro+ on November 3, 2026.

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