Comparison

Devdy vs Diet AI

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

Head to head
About

Devdy

Features
Read full description

PFC管理を管理して、ボディメイクしていくアプリです。 ヘルスケアから体重、身長、アクティブエネルギーを元にエネルギー計算に使用します。 また体脂肪は変化の推移をグラフで見ることもできます。

About

Diet AI

Effortlessly track your food intake and calorie goals using natural language chat or photo recognition. This AI-powered coach calculates nutrition, suggests meals, and monitors progress without tedious manual entry.

Highlights
  • Log meals via chat
  • Log meals with photos
  • AI food and meal suggestions
  • Calorie and macronutrient calculation
  • Weight and macro trend charts
  • Personalized AI coaching
Features
Read full description

Diet AI is a simple, chat-based calorie and diet tracking app. Just tell the AI what you ate - it does the math for you. Diet AI is a fully chat-based calorie counter that removes tedious forms and setup. Type "I had grilled chicken, rice and a salad" or just send a photo of your meal, and your log is done. Your personal AI coach calculates the calories and macronutrient balance, tells you how many calories you have left today, and even suggests what to eat next - all in a natural conversation. If food-logging apps never stuck for you, this one is different. No complicated menus, no endless daily data entry, no guilt. Overate today? Diet AI won't scold you - it gently helps you balance things out tomorrow. WHO IT'S FOR - Beginners who want to lose weight but don't know where to start - Anyone who found calorie counting or food logging too tedious to keep up - People burned out by traditional tracking apps - Those who care about post-pregnancy changes, bloating or plateaus - Anyone who wants a healthy, sustainable approach instead of extreme restriction - People who want an effortless view of their macros and weight trends FEATURES - Log by chatting: Just send the AI a quick message. No forms, no searching a food database. - Log with a photo: Snap your meal and the AI estimates the contents, portions, calories and macros. - Your personal AI food coach: Ask "What should I have for lunch?" or "Help me pick from this menu" and get concrete suggestions, plus advice for tomorrow. - Eating out or grabbing convenience food? Send a photo of the menu and the AI helps you choose. - Built to keep you going: Kind check-ins that celebrate your wins, with easy-to-read charts of your weight, calories and macros. MAIN FUNCTIONS - Calorie logging by simple chat messages - Photo-based meal logging - Automatic calculation of calories and macros (protein, fat, carbs) - Remaining calories for the day at a glance - AI meal and menu suggestions - Weight and body-fat tracking with charts - Automatic calorie goal setting OUR PHILOSOPHY A diet shouldn't be a series of sacrifices or a race against numbers. You don't have to be perfect - what matters is being able to keep going. Diet AI feels like checking in with a kind coach every day, supporting a pace you can actually sustain. Start by telling the AI about your next meal. Note: This app supports building healthy eating habits and is not intended for medical diagnosis or treatment. Terms of Use: https://diet-ai.appmatch.jp/terms/ Privacy Policy: https://neonsoak.com/privacy-policy/

Screenshots

Devdy2 screens
Diet AI4 screens

Verdict

The call

The clearest difference is in-app purchases: Devdy at none against Diet AI's 2. Devdy also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.5). Diet AI's advantage is update cadence (every 3 days vs fortnightly). On price 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. Diet AI sells 2 in-app purchases, starting at $3.99 per month. Devdy asks for nothing beyond the download.

UpkeepUpdate frequency

Devdy ships an update fortnightly, Diet AI every 3 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 4 level
Devdy versus Diet AI: the parameters behind the verdict, then further details
ParameterDevdyDiet AI
PriceFreeFree
Positive reviews—40.0% of reviews
Update frequencyFortnightlyEvery 3 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.5
Further details — not scored
Size59 MB121 MB
Age rating4+4+
DeveloperdevenueNEONSOAK

In-app purchases

None

Devdy

No in-app purchases

2 purchases

Diet AI

Subscriptions2
  • ダイエットAI プレミアム月額プラン7 Days trial$3.991 Month
  • ダイエットAI プレミアム年間プラン7 Days trial$29.991 Year

Questions

Is Devdy free?
Devdy is free to download, with no in-app purchases.
Is Diet AI free?
Diet AI is free to download, with in-app purchases available.
Do Devdy or Diet AI have ads?
Diet AI shows ads; Devdy does not.
Which is updated more often, Devdy or Diet AI?
Devdy ships an update fortnightly, and Diet AI every 3 days. Most recently, Devdy was updated on November 3, 2026 and Diet AI on November 5, 2026.

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