Comparison

21 Day Container Tracker vs OptimalFit

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

Head to head
About

21 Day Container Tracker

This app helps users track their progress on a 21-day program. It allows for easy logging of containers, water intake, exercises, and body measurements. Visualize your journey with progress graphs and access an approved food list.

Highlights
  • Tap & Track™ container and water logging
  • Automatic container generation
  • Body Part Indicator™ measurements
  • Exercise tracking with custom options
  • Daily notes and body weight tracking
  • Progress graphs
  • Approved food list
Features
Read full description

◆◆◆◆◆ "DON'T start the 21 day program without this app!" - Kristen 21 day users choose this app over all the others and here's why: ◆ Tap & Track™ to track containers & water! ◆ Offers Automatic Container Generation! ◆ Body Part Indicator™ measurements! ◆ Track your exercises and add custom exercises ◆ Add notes for each day of the program if desired ◆ Track body weight and body measurements ◆ See a list of approved foods for the 21 day program ◆ Flexible weight and exercise tracking! ◆ See a graph of your progress throughout the 21 days ◆ Easily edit, fix, and update your information for the app ◆ Created by 21 day users for 21 day users! ◆ Boost results by 200% and get your body beach ready! Join countless thousands of others and download this app to track your 21 day program so you can focus on succeeding and getting MAX RESULTS! ◆◆◆◆◆ - "Just tap a container color! No more tracking on paper! Love it!" - Kendra ◆◆◆◆◆ - "I can't imagine what else I would need in an app! " - Sarah ◆◆◆◆◆ - "Love this product! Definitely worth the buck!" - Foxxy1424612 ◆◆◆◆◆ - "So glad I found this app to guide me on my 21 day program!" - Emmi1212 P.S. Don't forget!! If you like the app, please rate it or write a review! If you have a problem contact us so that we have a chance to help you and fix any issues. Annual Subscription: - You can subscribe for weight/measurement tracking, approved food list, and unlimited access to all features of the app with no ads. - The subscriptions price is $29.99 USD yearly or equal to the same price tier that "Apple's App Store Matrix" determines in other currencies. - You may cancel a subscription or free-trial anytime via the subscription setting through your iTunes account. This must be done 24 hours before the end of the free-trial or subscription period to avoid being charged. - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. No cancellation of the current subscription is allowed during active subscription period. Any unused portion of a free-trial period, will be forfeited when the user purchases a 21 Day Tracker Annual subscription Terms of use: http://cubesol.com/terms.html Privacy policy: http://cubesol.com/privacy.html

About

OptimalFit

Features
Read full description

Your fitness data should make YOU smarter — not someone else's ad network. OptimalFit is a complete fitness tracker that keeps your data on your own phone by default. No account needed. No analytics. No ads. And now: an optional community where you share only what you choose. TRACK EVERYTHING THAT MATTERS • Sleep — bed time, wake time, quality; duration handled automatically, even past midnight • Food — meals with calories, protein, carbs and fat, including pre- and post-workout meals • Workouts — type, duration, intensity and how the session actually went • Body — weight, body fat % and muscle mass %, with 90-day trend charts • Water & steps — quick-add water, daily step totals, progress vs your targets INSIGHTS THAT ACTUALLY USE YOUR DATA OptimalFit's statistics engine runs entirely on your phone and answers questions generic apps can't: • What time of day do YOUR workouts go best? • Which weekdays are your strongest? • How much does last night's sleep change today's performance? • When do you need a rest day? Every recommendation shows its confidence level and tells you honestly when there isn't enough data yet. GOALS WITH A BUILT-IN REALITY CHECK Pick a goal — lean bulk, cut, recomposition, maintain, or performance — and get personal daily targets for calories, protein, fat, carbs, water, steps and sleep. OptimalFit learns your actual maintenance calories from your own logs and adjusts your targets week by week. If your timeline is physiologically unrealistic, it tells you straight. NEW: AN OPT-IN COMMUNITY BUILT ON RECEIPTS Create a free account (entirely optional) and share your wins: • Receipts — proof-backed stat cards computed by your on-device coach: estimated-1RM trends, consistency grids, weight-trend summaries. Only the numbers on the card are shared — never your logs. • Post workouts, meals and photos you explicitly choose to publish • Follow friends, like and comment, and check in at the gym — just a gym name and date, no GPS; the app never touches your location • Community benchmarks — anonymous, aggregate percentiles that only appear once at least 5 people contribute; individuals are never exposed Sharing is per-post and deliberate. Nothing is auto-uploaded. Delete your account in-app anytime and everything you shared is deleted with it. Report and block tools keep the feed kind. PRIVATE BY ARCHITECTURE, NOT BY PROMISE • All tracking data lives in local storage on your phone — with or without an account • No ads, no trackers, no analytics SDKs — still zero • The community is opt-in; only content you explicitly post reaches our servers • One-tap export for backups; delete everything anytime IMPORT YOUR EXISTING HISTORY Bring in steps, weight, sleep and water from an Apple Health export (the file you create in the Health app) or Samsung Health CSV files — processed entirely on your device. OPTIONAL AI COACH — ON YOUR OWN TERMS Run the free companion program on your own computer and pair your phone over your home Wi-Fi. Answers grounded in your actual logs, meal-photo macro estimates, supportive physique feedback — all on your own machines, never our servers. With a community account, the coach can also pull anonymous benchmark percentiles to show how your numbers compare. HONEST LIMITS OptimalFit is a fitness tool, not a medical device. Its insights are statistics, not medical advice — check with a professional before big changes. Back up your local data with the built-in export. Track everything. Learn what works. Share only the wins you choose.

Screenshots

21 Day Container Tracker4 screens
OptimalFit4 screens

Verdict

The call

The clearest difference is in-app purchases: OptimalFit at none against 21 Day Container Tracker's 3. On price, ads, device support and iOS requirement 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

Both are free to download. 21 Day Container Tracker sells 3 in-app purchases, starting at $4.99 per 7 days. OptimalFit asks for nothing beyond the download.

Scorecard1 real difference · 9 level
21 Day Container Tracker versus OptimalFit: the parameters behind the verdict, then further details
Parameter21 Day Container TrackerOptimalFit
PriceFreeFree
Rating4.7 (511 ratings) — better—
Positive reviews74.3% of reviews—
Number of ratings511 — better—
Update frequencyEvery 3 weeks—
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size45 MB4 MB
Age rating4+17+
DeveloperCube Software Solutions Inc.Krish Jetly

Bugs and requests

21 Day Container Tracker

Reported bugs

3 issues
  • Data loss when switching between cycles
  • Compatibility issues with older devices
  • Inconsistent container tracking behavior

Requested features

5 requests
  • Ability to manually enter food items
  • Long-term data tracking and analytics
  • Integration with other fitness apps
  • Customizable container settings
  • Meal planning and recipe suggestions

OptimalFit

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

21 Day Container Tracker

Subscriptions3
  • 21 Day Tracker Weekly3 Days trial$4.997 Days
  • 21 Day Container Tracker Pro3 Days trial$29.991 Year
  • 21 Day Tracker Annual Pro$29.991 Year
None

OptimalFit

No in-app purchases

Questions

Is 21 Day Container Tracker free?
21 Day Container Tracker is free to download, with in-app purchases available.
Is OptimalFit free?
OptimalFit is free to download, with no in-app purchases.
Do 21 Day Container Tracker or OptimalFit have ads?
Neither 21 Day Container Tracker nor OptimalFit shows ads.

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