Comparison

24 vs Zero Cal

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

Head to head
About

24

Features
Read full description

24-7 Fitnessklubi välisuste ja pöördväravate avamise rakendus. Äpi kasutaja peab olema liitunud https://www.24-7fitness.ee/liitumine/ ja omama kehtivat teenuse paketti. Äpiga saab avada spordiklubi pöördväravat üks kord päevas. Vahemikus 22:00-07:00 on lisaks võimalik avada osade klubide puhul ka välisuksi.

About

Zero Cal

Effortlessly track your daily calorie and macronutrient intake using AI-powered food logging. Choose from voice, text, photo, barcode, or label scanning to quickly log meals and monitor your progress with visual feedback.

Highlights
  • AI-powered food logging
  • Log via voice, text, photo, barcode, or label
  • Calorie and macro estimates
  • Visual progress tracking
  • AI food context analysis
  • Multi-language support
Features
Read full description

Logging food shouldn't take longer than eating it. Zero Cal gives you four quick ways to add a meal: • Describe what you ate in your own words • Take a photo and let AI estimate what's on the plate • Scan a barcode or nutrition label • Search more than four million foods See the whole day The calorie ring shows how much you have left. Protein, carbohydrate, and fat stay beside it, so you can check the numbers without digging through charts. Leave room for real life Your daily goal fills three quarters of the ring. The last quarter is a visible cushion for a bigger dinner or an unplanned snack. You can repeat recent meals, change portions, and follow your progress over 14 days. Ask Zero When you want more context, ask for a short AI read on food quality, processing, fullness, and possible blood sugar impact. Stay consistent A logging streak and calendar show which days you tracked. On weekends, a short report sums up the week: completed days, average calories and macros, and a couple of suggestions based on your logs. What you can do • Log by voice, text, photo, barcode, or label • Get calorie and macro estimates • Edit portions and ingredients • Set personal calorie and macro goals • Search foods, review history, and add past meals again • See your logging streak on a calendar • Get a weekend report on completed days, calories, and macros • Turn on logging reminders and weekly report notifications • Use the app in English, Spanish, or Russian • Choose a light or dark theme Zero Cal tracks nutrition. It does not give medical advice. Estimates can differ from the actual food, so check the label or another reliable source when accuracy matters. Zero Cal requires a subscription. Payment is charged to your App Store account. Subscriptions renew automatically unless you cancel at least 24 hours before the current period ends. You can change or cancel your subscription in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

243 screens
Zero Cal4 screens

Verdict

The call

The clearest difference is in-app purchases: 24 at none against Zero Cal's 2. 24 also leads on iOS requirement (12.0 vs 16.4). Zero Cal's advantage is update cadence (every 5 days vs every 3 months). On price, 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. Zero Cal sells 2 in-app purchases, starting at $9.99 per month. 24 asks for nothing beyond the download.

UpkeepUpdate frequency

24 ships an update every 3 months, Zero Cal every 5 days. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 6 level
24 versus Zero Cal: the parameters behind the verdict, then further details
Parameter24Zero Cal
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 3 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Subscription
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS12.0 — better16.4
Further details — not scored
Size30 MB119 MB
Age rating4+4+
DeveloperGreaton OÜOleg Filimonov

In-app purchases

None

24

No in-app purchases

2 purchases

Zero Cal

Subscriptions2
  • Zero Cal Monthly14 Days trial$9.991 Month
  • Zero Cal Yearly2 Months trial$89.991 Year

Questions

Is 24 free?
24 is free to download, with no in-app purchases.
Is Zero Cal free?
Zero Cal is free to download, with in-app purchases available.
Do 24 or Zero Cal have ads?
Neither 24 nor Zero Cal shows ads.
Which is updated more often, 24 or Zero Cal?
24 ships an update every 3 months, and Zero Cal every 5 days. Most recently, 24 was updated on October 29, 2026 and Zero Cal on October 25, 2026.

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