Comparison

Grava vs 髪診断

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

Head to head
About

Grava

Effortlessly track your food intake by simply taking a photo. This app uses AI to estimate calories and macros, offering honest ranges rather than precise, potentially inaccurate numbers. Set personalized daily targets based on your goals and easily view your progress over time.

Highlights
  • Log food with photos
  • AI calorie and macro estimation
  • Honest calorie range estimates
  • Personalized daily targets
  • Offline backup with Apple Intelligence
  • Syncs across Apple devices
Features
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Grava turns a photo of your food into calories and macros in seconds. No searching food databases, no weighing portions, no math — point your camera, confirm, done. Under the hood, Google's Gemini analyzes your food photos with state-of-the-art accuracy, and Apple Intelligence steps in as an on-device backup — so Grava keeps working even when you have no connection. LOG FOOD IN SECONDS - Snap a photo of your meal - Add a quick note for extra accuracy - Import a photo or screenshot — menus, nutrition labels, and delivery-app orders all work - Or just type what you ate HONEST ESTIMATES, NOT FAKE PRECISION No app can know your burrito had exactly 743 calories — and any app that claims to is guessing. Grava shows you the honest range instead. Pick how to count it once — top of the range for cutting, middle for maintenance, bottom for bulking — and Grava applies it automatically. Every value can be edited, and nothing is logged until you confirm. You can even snap a photo just to check a meal without logging it. TARGETS BUILT AROUND YOU A 30-second setup (sex, birth year, height, weight, activity level) computes your maintenance calories using the Mifflin-St Jeor equation, plus targets for losing or gaining 1–2 lb per week. Every day shows exactly where you stand: deficit or surplus. MADE FOR REAL LIFE - Night owl? End your calorie day after midnight (up to 6 AM) so late-night snacks count toward the right day — Grava even offers this automatically if it notices you logging late - See your history as a line chart, calendar, or list, with weekly per-day averages and full macro breakdowns - Sign in with Apple and your history syncs across iPhone, iPad, and Mac GRAVA PLUS Photo estimates from Google's Gemini come with Grava Plus, a monthly or yearly subscription, and your first month is free with no card needed. Without Plus, your log, history, targets and companions stay free, and devices with Apple Intelligence can still estimate on-device (much less accurate and slower). Payment is charged to your Apple Account. Plus renews automatically unless you cancel at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use: https://gravacal.com/terms Privacy Policy: https://gravacal.com/privacy Download Grava and log your next meal in the time it takes to take a picture.

About

髪診断

Features
Read full description

Is your hair really damaged? Take one photo and get your hair scored on 6 metrics: shine, moisture, damage, frizz, volume, and color. - One photo, about 20 seconds - Radar chart with comments for each metric - Hair calendar tracks daily changes, so you can see if your treatment is working - Tonight's Action: one care step chosen from your scores - Daily reminder notifications keep your streak going Free plan: 3 checks per day. Premium plan (monthly subscription): more detailed analysis, personalized advice, unlimited checks, no ads. Note: This app is not a medical service. Results are for reference only. If you have scalp or hair concerns, please consult a dermatologist. Photos are sent to OpenAI's API for analysis only. Privacy Policy: https://appricot-jp.github.io/privacy/haircheck/ Terms of Use (EULA): https://appricot-jp.github.io/privacy/haircheck/terms/

Screenshots

Grava4 screens
髪診断4 screens

Verdict

The call

The clearest difference is ads: Grava at none against 髪診断's shown. Grava also leads on update cadence (every 2 weeks vs monthly). 髪診断's advantage is iOS requirement (17.0 vs 26.5). On price, in-app purchases 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

Both are free to download. Grava sells 10 in-app purchases, starting at $4.99 per month and 髪診断 sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Grava ships an update every 2 weeks, 髪診断 monthly. The most recent releases landed on November 6, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
Grava versus 髪診断: the parameters behind the verdict, then further details
ParameterGrava髪診断
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 2 weeks — betterMonthly
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPad — betteriPhone
Requires iOS26.517.0 — better
Further details — not scored
Size29 MB9 MB
Age rating12+4+
DeveloperEDSON RUSSELL AYLLONAppricot Co.,Ltd.

In-app purchases

10 purchases

Grava

Subscriptions2
  • Grava Plus Monthly$4.991 Month
  • Grava Plus Yearly$39.991 Year
One-time8
  • Bread$1.99
  • Fish$1.99
  • Dolphin$1.99
Show 5 more
  • Banana$1.99
  • Shark$1.99
  • Mushroom$1.99
  • Sushi$1.99
  • Platypus$1.99
1 purchases

髪診断

Subscriptions1
  • Premium Plan$1.991 Month

Questions

Is Grava free?
Grava is free to download, with in-app purchases available.
Is 髪診断 free?
髪診断 is free to download, with in-app purchases available.
Do Grava or 髪診断 have ads?
髪診断 shows ads; Grava does not.
Which is updated more often, Grava or 髪診断?
Grava ships an update every 2 weeks, and 髪診断 monthly. Most recently, Grava was updated on November 6, 2026 and 髪診断 on October 25, 2026.

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