Comparison

Sphere vs Fun Calorie Tracker

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

Head to head
About

Sphere

Effortlessly track your food intake with AI-powered photo logging and instant search. Designed for speed and consistency, it helps you achieve your weight loss, muscle building, or maintenance goals.

Highlights
  • AI-powered photo logging
  • Instant food search
  • Smart auto-add favorites
  • Skip days for tracking breaks
  • Clean daily dashboard
  • Streak tracking
Features
Read full description

The fast calorie tracker, built on USDA data. Say what you ate or snap a photo, and it's logged. Use Sphere free, no subscription and no card. Upgrade to Premium for photo logging, macros and more. JUST SAY WHAT YOU ATE "Two eggs, toast and a coffee." One sentence, no typing, and every food lands in your log. Voice logging is free. Start it from a Lock Screen widget or Control Center, too. FOOD DATA YOU CAN TRUST 12,000 everyday foods measured by the USDA. When a food isn't there, AI fills the gap with an estimate, and you can fix any portion in one tap: cups, ounces, grams or calories. SEARCH THAT PUTS PLAIN FOODS FIRST Everyday foods come before branded products, so the food you meant is usually the top result. MISS A DAY, KEEP YOUR STREAK Earn skip days as you log. Take a day off and your streak is still there when you come back. No reminders on your off days. SAME LUNCH AGAIN? Copy a meal from yesterday and paste it into today. Saved meals and recent foods are one tap away. SET YOUR CALORIE GOAL IN A MINUTE A built-in calorie deficit calculator turns your age, height, weight and pace into a daily target, whether you want to lose, maintain or gain. FREE • Voice logging and food search • Daily calorie goal and deficit calculator • Streaks and skip days • Water tracking • Works offline, syncs when you're back PREMIUM • Photo logging: snap your plate, calories filled in • Barcode scanning • Macro tracking: protein, carbs, fat and more • Progress and weight charts • Apple Health sync Premium is billed through your Apple ID and renews automatically unless you cancel at least 24 hours before the period ends. Manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Fun Calorie Tracker

Features
Read full description

Luko makes healthy eating and working out feels like play Luko is a tiny dragon with a big heart, with an AI meal scanner and personalized workouts. Watch your progress turn into something you can actually see, collect, and come back to tomorrow. PERSONAL TRAINER IN YOUR POCKET No generic workout library. No digging through hundreds of routines. Luko learns your goals, fitness level, available equipment, schedule, and the kinds of training you actually enjoy — then curates a personalized training plan around you. Each day, Luko turns that plan into a workout built for where you are now. It’s 100% personalized training just for you — not just another list of exercises. LOG MEALS IN SECONDS Snap a photo, describe what you ate, or type it in. Luko estimates calories and macros. Need inspiration? Find recipe ideas with Luko when you’re not sure what to eat next. TURN HEALTHY DAYS INTO A COLLECTION Luko is built to make progress feel visible. Log meals and complete workouts to unlock animal companions across collectible sticker maps. Instead of watching another chart go up and down, you’re building a little world out of the habits you keep. And yes, Luko will be there for it. A BUDDY, NOT A MEDICAL DEVICE Calorie, macro, and workout estimates are for general wellness purposes and may not be exact. Luko is not a medical device and does not replace professional medical advice. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Sphere4 screens
Fun Calorie Tracker4 screens

Verdict

The call

The clearest difference is in-app purchases: Fun Calorie Tracker at none against Sphere's 2. Fun Calorie Tracker also leads on iOS requirement (17.0 vs 26.0). On price, update cadence, ads 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. Sphere sells 2 in-app purchases, starting at $9.99 per month. Fun Calorie Tracker asks for nothing beyond the download.

UpkeepUpdate frequency

Sphere ships an update every 2 days, Fun Calorie Tracker every 4 days. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.

Scorecard2 real differences · 8 level
Sphere versus Fun Calorie Tracker: the parameters behind the verdict, then further details
ParameterSphereFun Calorie Tracker
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 2 days — betterEvery 4 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhoneiPhone, iPad — better
Requires iOS26.017.0 — better
Further details — not scored
Size44 MB179 MB
Age rating4+12+
DeveloperUpstoryZentari Labs Inc

In-app purchases

2 purchases

Sphere

Subscriptions2
  • Premium Monthly7 Days trial$9.991 Month
  • Premium Annual7 Days trial$59.991 Year
None

Fun Calorie Tracker

No in-app purchases

Questions

Is Sphere free?
Sphere is free to download, with in-app purchases available.
Is Fun Calorie Tracker free?
Fun Calorie Tracker is free to download, with no in-app purchases.
Do Sphere or Fun Calorie Tracker have ads?
Neither Sphere nor Fun Calorie Tracker shows ads.
Which is updated more often, Sphere or Fun Calorie Tracker?
Sphere ships an update every 2 days, and Fun Calorie Tracker every 4 days. Most recently, Sphere was updated on October 15, 2026 and Fun Calorie Tracker on October 17, 2026.

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