Power Stretching vs Calvi AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Power Stretching
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Power Stretching App — твій швидкий і зручний запис на тренування у кілька кліків! Power Stretching — це сучасний простір для тренувань, де на тебе чекають кваліфіковані тренери, комфорт у кожній деталі, зручний графік, дружнє жіноче ком’юніті та помітні зміни вже з перших відвідувань. Для ефективних тренувань ми пропонуємо такі напрями: Stretching, Pilates, AeroStretching, BodyFit та Barre. У застосунку ти можеш: • обрати тренера та формат занять • переглядати розклад • записуватись на тренування • отримувати сповіщення • бути в курсі всіх новин Зроби перший крок до більш гнучкого та сильного тіла вже сьогодні. До зустрічі на тренуваннях!
Calvi AI
Effortlessly track your food intake using natural language or photos. An AI assistant analyzes your meals, calculates calories, and monitors macros. Set personalized goals and visualize your progress with detailed analytics.
- Log meals via text or photo
- AI-powered calorie and macro calculation
- Personalized daily norm and goal setting
- Track water intake, weight, and workouts
- Allergen and custom dish recognition
- Detailed analytics and progress charts
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Calvi is a food diary where you never type calories by hand. Write the way you speak: "two eggs and toast with butter", "a bowl of borscht", "300 ml of water", "ran 30 minutes". Nora, the built-in AI assistant, reads the sentence, recognises the dish, takes the portion weight into account and logs calories, protein, fat and carbs herself. If the weight is missing, she asks once and offers amounts you pick with one tap. No tables, no searching a database, no calculator. A PHOTO INSTEAD OF WORDS Snap your plate and Nora tells you what is on it and what it adds up to. The photo lives only as long as the analysis takes: it is never stored and never reaches our database. ONE DIARY FOR THE WHOLE DAY • Calories, protein, fat and carbs for every meal, counted by Nora • Water • Weight and body measurements • Workouts: burned calories are subtracted from what you ate, so a training day gives you room • Medications with reminders A NORM THAT IS YOURS The daily norm comes from the Mifflin-St Jeor formula: height, weight, age and activity. You choose the goal and the pace, and the app says plainly when you will get there and when the pace is too aggressive to hold. Days inside your norm turn green, and the streak counts them. NORA REMEMBERS Say "I don't eat pork" once and never repeat it. Allergens are checked against what a dish is made of, not its name, so peanuts hidden in a sauce do not slip through. YOUR OWN DISHES Log your homemade borscht once and it counts the same way next time. Your dishes stay yours and never change the shared reference for anyone else. ANALYTICS WITHOUT DECORATION Weeks and months as charts: calories, weight, macros, measurements. You see the trend instead of one bad day. FREE AND PRO The diary, analytics, water, workouts, measurements and medications are free, with no ads and no time limit. Nora is free too, within a monthly allowance of tokens: a message costs one, a photo two. Calvi Pro removes the allowance: unlimited conversations, photos, weekly reviews and recipe ideas. Pro is a monthly or yearly subscription that renews automatically until cancelled; cancel anytime in your App Store subscription settings. Buying Pro requires signing in, so the subscription follows you to a new phone. WORKS WITHOUT AN ACCOUNT The app is ready from the first second, with no email and no password. Sign in with Apple or Google does two things: it brings your entries back on a new phone and it ties Pro to you rather than to a device. HONEST ABOUT THE NUMBERS Calorie values are estimates: from the label for packaged food, averages for dishes. Calvi is a logging tool, not a medical device and not a doctor. Decisions about your health stay with you and your physician. Calvi Pro subscription Calvi Pro Monthly: one month, renews every month Calvi Pro Yearly: one year, renews every year The price is shown in the app in your local currency before you buy. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is turned off at least 24 hours before the end of the current period. Manage or cancel it in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://calvi.uk/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Power Stretching at none against Calvi AI's 2. Power Stretching also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). Calvi AI's advantage is update cadence (every 2 days vs every 4 days). 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
Both are free to download. Calvi AI sells 2 in-app purchases, starting at $9.99 per month. Power Stretching asks for nothing beyond the download.
Power Stretching ships an update every 4 days, Calvi AI every 2 days. The most recent releases landed on October 28, 2026 and November 6, 2026 respectively.
| Parameter | Power Stretching | Calvi AI |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 days | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPod | iPhone, iPod, Apple Watch — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 53 MB | 71 MB |
| Age rating | 4+ | 4+ |
| Developer | LUCKYSOFT OU | Mykhailo Nahreba |
In-app purchases
Power Stretching
No in-app purchases
Calvi AI
- Calvi Pro Monthly$9.991 Month
- Calvi Pro Yearly3 Days trial$39.991 Year









