Comparison

CalKit vs Nagi

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

Head to head
About

CalKit

This app helps you achieve your health goals by tracking calories and nutrition. It features a TDEE calculator, barcode scanner for food, and tools to monitor carbs and other essential nutrients.

Highlights
  • Calorie tracking
  • Nutrition tracking
  • TDEE calculator
  • Barcode food scanner
  • Carbohydrate monitoring
  • Personalized diet plans
Features
Read full description

Whether you want to lose weight, build muscle, or maintain a healthier lifestyle, CalorieKit gives you the tools to stay on track with your nutrition goals. Your daily calorie and macro budget is built for your body not a generic 2,000. Tell us your height, weight, goal, and pace during onboarding, and CalorieKit (CalKit) turns that into a plan you can follow, with a projected date to reach your target weight. LOG MEALS YOUR WAY • AI meal estimates - describe a meal in text, snap a photo, or dictate it by voice and get calories plus protein, carbs, and fat in seconds • Food search - look up branded and generic foods from a large nutrition database • Barcode scanner - scan packaged foods to log them fast • Manual entry - add custom foods and portions when you already know the numbers STAY ON TRACK EVERY DAY • Home dashboard with calories remaining, macro breakdown, and meal-by-meal progress • Daily journal to review everything you logged • Water intake tracker with a customizable daily goal • Logging streaks with streak-shield protection after a 7-day run • Meal reminders and streak-at-risk alerts so you do not lose momentum SEE THE FULL PICTURE • Analytics dashboard with energy balance, weight trends, and habit insights (unlocks after 7 days of logging) • Rhythm insights that connect meal timing, eating windows, and sleep from Apple Health • Steps and active calorie burn when Apple Health is connected • Achievements and membership ranks as you build consistency DESIGNED TO FIT YOUR ROUTINE • Syncs with Apple Health to read steps, workouts, weight, and energy burn, and write dietary nutrition back when you choose • Cloud backup keeps your profile, settings, and logs in sync across devices • Clean, focused interface built for quick daily logging If you have any suggestions or questions, please email us at hello@getcalkit.com Contact Us: support@getcalkit.com Privacy Policy: https://docs.everoasistech.com/privacy-policy Terms of Use: https://docs.everoasistech.com/terms-of-service *Note: App requires to have a subscription with free trial to access the features and contents of the app. Not intended for medical purposes. Take all the recommendations as a suggestions, please consult with a professional and do your own research before trying a new calorie and nutrient plan. Features subject to change. Nutritional data shown in the app is provided by FatSecret.

About

Nagi

This app records loud sounds during sleep, such as snoring or teeth grinding. It provides insights into when these sounds occurred and their duration. Users can also track their sleep patterns and tag factors that may influence their sleep quality.

Highlights
  • Snore and loud sound recording
  • Sleep sound analysis
  • Sleep pattern tracking
  • Customizable bedtime reminders
  • Integration with Apple Health
  • Tagging of sleep influencers
Features
Read full description

Nagi records your own night, exactly as it happened. While you sleep, your phone's microphone quietly listens. In the morning you can hear how long you were loud, when it peaked, and your three loudest moments, in your own ears. No setup beyond one tap before bed, and if you like, Nagi can remind you at your usual bedtime. The sound is sent nowhere. Only the loud stretches are kept. The recording keeps more than snoring. Grinding your teeth, talking in your sleep: anything loud enough is kept the same way. On the free plan, Nagi does not judge what a sound was, and it does not tell snoring from grinding either. It is you, listening back, who decides what a sound was. Mark a moment "probably someone else" or "another sound" and it drops out of the numbers; the recording itself stays. On the paid plan, once your night is recorded, Nagi listens back to the loud parts right on your phone, and the morning shows one more card: of your loud minutes, how many were snoring and how many were something else. Nothing is sent anywhere. Nagi is not only for the person snoring. It is also for the person lying awake next to them. Instead of an argument, there is a record: what actually happened, not just what it felt like at 3am. Nagi asks about you before it shows you a number. Every morning starts with one simple question: how do you feel. If your own sense of the night disagrees with what Nagi recorded, you are right, and the screen says so. There are no targets, no streaks, and a rough night never costs more taps to record than a good one. As your nights add up, your own usual comes into view: not a population average, just your own line. Tag what happened or what you tried (alcohol, a nasal strip, medicine) with one tap, and once your record can carry it, Nagi lays your tagged nights beside the rest in minutes from your own record. The only evidence is your own nights. If you already wear a watch or a ring to sleep, Nagi can stand that night's sleep beside your sound. Nagi does not measure sleep with the phone. It reads the record your own device already wrote to Apple Health. In the morning there is one score out of 100, never against other people and never a goal. Under it stand the three parts it is made of, each with its arithmetic printed: how long you slept, measured against the night you ask for, 8 hours unless you change it under Health in Settings; how close to your usual bedtime, the middle of your own last 13 nights; and waking in the night. Deep, light and REM are drawn in the night's picture and score zero, because we measure them but cannot yet stand behind scoring them, and the screen says exactly that. The total needs 13 of your own nights before it exists; until then the parts show at full value and the app tells you how many nights are left. No watch and no ring means no score, and nothing else changes. The reading and the score are free. Your recordings, playback and your entire history stay free, forever. A paid plan (¥380 a month or ¥3,800 a year, 7 days free, renews until cancelled) exists only for the deeper analysis, never for your own record. Nagi is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. Nagi counts; it never claims to find a condition. If snoring, breathing or sleep symptoms concern you, please see a doctor or another medical professional. Typhoon pressure, dry winter air, cedar pollen from February: the season changes, Nagi keeps listening either way. Privacy Policy: https://mynagi.jp/privacy Terms of Use: https://mynagi.jp/terms

Screenshots

CalKit4 screens
Nagi4 screens

Verdict

The call

The clearest difference is rating: Nagi at 5.0 against CalKit's 4.2. Nagi also leads on review sentiment (100% vs 60%) and iOS requirement (18.4 vs 26.6). CalKit's advantage is monetization model (free vs freemium) and ratings volume (14 vs 1). On price, update cadence, ads and in-app purchases 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. CalKit sells 3 in-app purchases, starting at $4.99 per 7 days and Nagi sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Nagi holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: CalKit has 14 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 60% of CalKit's written reviews are positive against 100% of Nagi's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 10, 2026 and October 3, 2026 respectively.

Scorecard5 real differences · 5 level
CalKit versus Nagi: the parameters behind the verdict, then further details
ParameterCalKitNagi
PriceFreeFree
Rating4.2 (14 ratings)5.0 (1 ratings) — better
Positive reviews60.0% of reviews100.0% of reviews — better
Number of ratings14 — better1
Update frequencyEvery 5 daysEvery 5 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFreemium
DevicesiPhoneiPhone, iPad — better
Requires iOS26.618.4 — better
Further details — not scored
Size93 MB31 MB
Age rating17+4+
DeveloperKamani Aravind ChowdaryTruths Lab

Customer experience

CalKit

All ratings14 ratings
Positive78.6%
Neutral0.0%
Negative21.4%
Written reviews20 reviews
Positive60.0%
Neutral15.0%
Negative25.0%

Nagi

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

In-app purchases

3 purchases

CalKit

Subscriptions3
  • CalorieKit Premium Weekly$4.997 Days
  • CalorieKit Premium Monthly$9.991 Month
  • CalorieKit Premium Annual7 Days trial$49.991 Year
2 purchases

Nagi

Subscriptions2
  • Monthly Plan7 Days trial$1.991 Month
  • Annual Plan7 Days trial$22.991 Year

Questions

Is CalKit free?
CalKit is free to download, with in-app purchases available.
Is Nagi free?
Nagi is free to download, with in-app purchases available.
Which has better reviews, CalKit or Nagi?
Nagi is rated higher. CalKit averages 4.2 out of 5 from 14 ratings, while Nagi averages 5.0 from 1 ratings.
Do CalKit or Nagi have ads?
Neither CalKit nor Nagi shows ads.
Which is updated more often, CalKit or Nagi?
CalKit ships an update every 5 days, and Nagi every 5 days. Most recently, CalKit was updated on October 10, 2026 and Nagi on October 3, 2026.

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