Comparison

fuelOS vs IC Diary

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

Head to head
About

fuelOS

Effortlessly track your nutrition with AI-powered food logging. Simply snap a photo, speak your meal, or scan a barcode to instantly understand your intake. Gain actionable insights into your diet to live healthier without the hassle of manual calorie counting.

Highlights
  • AI-powered food logging
  • Photo, voice, and barcode scanning
  • Effortless nutrition tracking
  • Actionable dietary insights
  • Micronutrient tracking (Pro)
  • HealthKit integration (Pro)
Features
Read full description

Everything you put in your body. One place. Food. Supplements. How you feel. Logged in the order you live them. fuelOS is built for people who take what goes in seriously. Anyone can pick it up. CAPTURE IN ONE GESTURE Snap a photo. Speak. Scan a barcode. The card appears and fills in as it reads, section by section. No forms. THE STACK Your supplements, vitamins, powders, and the rest of your routine, in one view. Point the camera at the bottle to add it. Log a dose in one tap from your Home Screen. Set reminders, then log, skip, or snooze. DOWN TO THE COMPOUND Macros and micronutrients, estimated by AI from the photo. fuelOS also estimates bioactive compounds in your food, like curcumin and beta-glucans. The detail you usually have to hunt for is already on the card. Estimates carry a ~, so a guess never reads like a scanned label. HOW YOU FEEL A daily check-in for energy, mood, and focus. Logged beside what you ate that day. CARRY IT EVERYWHERE Quick-log from the Home Screen widget or with Siri and Shortcuts. Meals and macros sync to Apple Health. Turn a streak or a strong day into a clean card, stating one true fact about your own data. FREE TO START A few free AI meal scans a day. Re-logging a past meal is always free. fuelOS PRO Unlimited logging. Micronutrient estimates. The analytics dashboard. Apple Health. Export your data, anytime. Take what goes in seriously. Start here. fuelOS uses AI to estimate nutrition from meals you log. All nutritional data is approximate and for informational purposes only. This app is not intended to diagnose, treat, cure, or prevent any disease or health condition. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about your diet or health. You may find the citations for peer-reviewed research papers we utilize to set the default values for calories and macros in Settings → Footer → "Sources" Terms of Use: https://fuelos.site/terms Privacy Policy: https://fuelos.site/privacy License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

IC Diary

Features
Read full description

IC Diary is a private diary created for people living with interstitial cystitis (IC), also known as bladder pain syndrome. It helps you track the symptoms, daily check-ins, treatment, observations, and flare-ups that shape life with IC. Log the details that matter to you, review your history, and use clear charts to notice personal patterns over time. Optional local reminders can help you keep a consistent routine. Export a backup or a CSV whenever you choose. Your interstitial cystitis diary stays on your device. IC Diary has no account, advertising, analytics, or cloud sync. IC Diary is a self-tracking tool for people with interstitial cystitis. It does not provide medical advice, diagnosis, or treatment and is not intended for emergencies. Always discuss symptoms and treatment decisions with a qualified healthcare professional.

Screenshots

fuelOS4 screens
IC Diary4 screens

Verdict

The call

The clearest difference is in-app purchases: IC Diary at none against fuelOS's 2. IC Diary also leads on iOS requirement (16.4 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. fuelOS sells 2 in-app purchases, starting at $9.99 per month. IC Diary asks for nothing beyond the download.

UpkeepUpdate frequency

fuelOS ships an update every 3 weeks, IC Diary every 2 weeks. Both last shipped on October 2, 2026.

Scorecard2 real differences · 8 level
fuelOS versus IC Diary: the parameters behind the verdict, then further details
ParameterfuelOSIC Diary
PriceFreeFree
Rating5.0 (12 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings12 — better—
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone
Requires iOS26.016.4 — better
Further details — not scored
Size37 MB59 MB
Age rating4+17+
DeveloperAbay BektursunGeorgii Tcamaladze

In-app purchases

2 purchases

fuelOS

Subscriptions2
  • fuelOS Pro Monthly3 Days trial$9.991 Month
  • fuelOS Pro Annual3 Days trial$89.991 Year
None

IC Diary

No in-app purchases

Questions

Is fuelOS free?
fuelOS is free to download, with in-app purchases available.
Is IC Diary free?
IC Diary is free to download, with no in-app purchases.
Do fuelOS or IC Diary have ads?
Neither fuelOS nor IC Diary shows ads.
Which is updated more often, fuelOS or IC Diary?
fuelOS ships an update every 3 weeks, and IC Diary every 2 weeks. Most recently, fuelOS was updated on October 2, 2026 and IC Diary on October 2, 2026.

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