Comparison

FastTrackr vs Circa

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

Head to head
About

FastTrackr

This app helps users track intermittent fasting with personalized plans and an AI assistant. It offers features for logging meals, water, and weight, along with insights into ketosis and autophagy zones. Users can also access recipes and meal planning tools.

Highlights
  • Intermittent fasting timer with ketosis zones
  • AI assistant for personalized guidance
  • Meal logging with AI calorie estimation
  • Water and weight tracking
  • Recipe library and meal planning
  • Progress charts and streaks
Features
Read full description

FastTrackr is an intermittent fasting app and fasting tracker for weight loss, with Avo — a friendly AI assistant who lives in the app. Start a 16:8 or OMAD fast in one tap, watch the fasting timer move through ketosis and autophagy zones, and log meals, water and weight in one place. No account required to begin — until you sign in, nothing you track leaves your device. MEET AVO, YOUR AI ASSISTANT - An animated companion who greets you, reacts to what you log and celebrates milestones - Log water, weight, activity or mood, or start and end a fast from Avo — offline, no account - Ask Avo about your fasting and wellness: 3 free AI answers a day with a free account, unlimited on Premium - He reads your own fasting, food, activity and weight first — guidance, not generic tips SMART FASTING TRACKER - Popular plans: 12:12, 14:10, 16:8, 18:6, 20:4, OMAD and 5:2 - Live fasting timer with zones from fat burning to ketosis and autophagy - Reminders so you never miss the start or end of a fast - Full history, streaks and progress charts AI INSIGHTS (PREMIUM) - Personalized Day, Week and Month analysis of your tracking - An AI-recommended fasting plan matched to your body, goals and experience AI MEAL LOG AND NUTRITION - Snap a photo or describe a meal; AI identifies it and estimates calories and macros - Backed by USDA data: calories, protein, carbs, fat and fiber at a glance MEAL PLANNING AND RECIPES - Over 530 recipes with photos and full nutrition: 5 free per category, all with Premium - Build daily meal plans, or generate recipes and plans with AI - Save favourites to your recipe library WATER, WEIGHT, ACTIVITY, AND MOOD - Personalized daily water goal from your body and activity - Weight tracking with trends, goals and progress rings - Workouts with BMR-aware calorie burn estimates - Capture your mood and reflect in a fasting journal PERSONALIZED HEALTH - Automatic BMI, BMR and TDEE from your profile - Goals that adapt as you progress - Guidance cites its sources — WHO, NIH, NHS, Harvard and more STAY MOTIVATED - Join time-boxed challenges built on your real data - Over 170 achievements to unlock - 43 in-app articles on the science and the how-to of fasting APPLE HEALTH (PREMIUM) - Import workouts, weight and active energy into one place PRIVATE BY DESIGN - Local-first: your data lives on your device and stays there until you sign in - Sign in and it backs up to your own private account, synced across devices - Full-size meal photos never sync; only a small thumbnail does - Export a complete copy of everything you've tracked, anytime - No ads. No data selling. Ever. FASTTRACKR PREMIUM Unlock AI insights, unlimited Ask Avo, AI meal logging, AI recipes and meal plans, the full recipe library, Apple Health import, Month and Year charts, and unlimited history. - Monthly: 9.99 USD - Annual: 59.99 USD - New yearly subscribers get a 14-day free trial. Cancel anytime. Payment will be charged to your Apple Account at confirmation of purchase. Your subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage or cancel your subscription in your Apple Account settings after purchase. Any unused portion of a free trial is forfeited when you purchase a subscription. Privacy Policy: https://sites.google.com/view/fasttrackr/privacy-policy Terms of Use (EULA): https://sites.google.com/view/fasttrackr/terms-of-use Support: fasttrackr.support@newversion.studio FastTrackr is intended for users aged 16 and over. Health disclaimer: FastTrackr provides general wellness and lifestyle information only and is not a substitute for professional medical advice, diagnosis or treatment. Consult a qualified healthcare provider before starting any fasting, diet or exercise program, especially if you are pregnant, nursing, under 18, or have a medical condition.

About

Circa

Build a calmer bedtime routine and understand your sleep patterns with private insights from Apple Health. Plan daily habits, reduce digital distractions before bed, and track sleep trends securely on your device.

Highlights
  • Personalized daily routines
  • Digital distraction blocking
  • Private sleep insights
  • Circadian schedule visualization
  • Product discovery for sleep
  • Apple Health integration
Features
Read full description

Build a calmer bedtime routine and understand the patterns behind your sleep. Circa combines a practical circadian schedule with private sleep insights from Apple Health. Plan the habits that shape your day, reduce digital distractions before bed, and follow your sleep trends without sending sensitive health data to external servers. YOUR DAILY RHYTHM • Create a personalized wake-up, morning light, meal, wind-down, and bedtime routine • See your current phase and what comes next at a glance • Receive optional reminders and Live Activities at the right time PROTECT YOUR WIND-DOWN • Choose distracting apps, categories, or websites with Screen Time • Apply optional boundaries during wind-down and after waking • Keep your selections private through Apple’s Family Controls framework PRIVATE SLEEP INSIGHTS • Turn sleep records stored in Apple Health into clear duration and bedtime trends • Follow resting heart-rate patterns from a compatible wearable • Explore interactive weekly and monthly charts CALMER DISCOVERY • Browse a focused collection of products for darkness, noise, comfort, and waking • Open product pages securely in an in-app Safari view • Affiliate links are clearly disclosed and never affect your price PRIVACY BY DESIGN Your Apple Health values and Screen Time selections are processed on your device. They are never sent to Mixpanel, Amazon, or advertising platforms. Circa uses limited analytics only when a Discover product link is opened. Circa is a general wellbeing tool and is not a medical device. It does not diagnose, treat, cure, or prevent any condition. Privacy Policy URL: https://studiojb.app/privacy/circa Terms of Use URL: https://studiojb.app/terms/circa

Screenshots

FastTrackr4 screens
Circa4 screens

Verdict

The call

The clearest difference is monetization model: Circa at free against FastTrackr's freemium. FastTrackr's advantage is iOS requirement (16.0 vs 18.0). On price, rating, review sentiment and ratings volume 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for FastTrackr against 5.0 for Circa. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

FastTrackr ships an update fortnightly, Circa every 3 weeks. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
FastTrackr versus Circa: the parameters behind the verdict, then further details
ParameterFastTrackrCirca
PriceFreeFree
Rating5.0 (1 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings12 — better
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreemiumFree — better
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better18.0
Further details — not scored
Size84 MB11 MB
Age rating17+4+
DeveloperNEW VERSION LIMITEDjean-baptiste delcros

Customer experience

FastTrackr

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Circa

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

FastTrackr

No in-app purchases

None

Circa

No in-app purchases

Questions

Is FastTrackr free?
FastTrackr is free to download, with no in-app purchases.
Is Circa free?
Circa is free to download, with no in-app purchases.
Which has better reviews, FastTrackr or Circa?
FastTrackr and Circa are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.
Do FastTrackr or Circa have ads?
Neither FastTrackr nor Circa shows ads.
Which is updated more often, FastTrackr or Circa?
FastTrackr ships an update fortnightly, and Circa every 3 weeks. Most recently, FastTrackr was updated on October 31, 2026 and Circa on November 5, 2026.

Other comparisons