Comparison

Slimba! vs Челленджи

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

Head to head
About

Slimba!

Features
Read full description

Slimba — your smart calorie plan for steady, healthy weight loss. Set a realistic goal, get a personalized daily calorie plan, and track every meal in seconds. Whether you type what you ate or just snap a photo of your plate, Slimba's AI assistant does the math for you — no manual searching through endless food databases. HOW IT WORKS • Set your goal. Tell Slimba your current weight, target weight, and target date. We'll calculate a safe daily calorie balance to get you there. • Track meals the easy way. Type a quick note like "1 banana and a coffee with milk" — or send a photo of your plate. The AI assistant identifies the food, estimates calories, and logs it for you instantly. • Stay in the green zone. A simple speedometer shows where your daily balance stands: green means you're on plan, yellow is a warning, red means you've gone over. No spreadsheets, no guesswork. • Bank your savings. Days when you eat below plan add calories to your "fund" — you can spend them later on a celebration dinner without breaking your goal. • See your progress. Daily, weekly, and monthly statistics show calories consumed, calories burned, and weight trends over time. Watch your goal calendar fill up with green days. WHY SLIMBA IS DIFFERENT • AI-first logging — no more scrolling through "Apple, medium, raw" vs. "Apple, large, raw." Just describe or photograph. • Built around a real plan — not just a tracker, Slimba calculates the exact daily balance you need to reach your goal weight. • Forgiving, not punishing — bad day? The fund system lets you recover without guilt. • Clean, distraction-free design — focus on your goal, not on the app. • Privacy-first — your data is encrypted, never sold, and AI photo analysis is opt-in with full disclosure. FEATURES • Personalized daily calorie target based on your goal • AI text and photo recognition for meals • Activity logging (workouts, walks, sports) • Daily, weekly, and monthly statistics • Goal calendar with progress visualization • Calorie "fund" for flexible eating • Weight tracking with trend charts • Reminders and gentle nudges • Support for both metric and imperial units SUBSCRIPTION Slimba offers a free 7-day trial. After the trial, full access requires a subscription. Cancel anytime in App Store settings — no questions asked. PRIVACY We take your data seriously. Slimba uses OpenAI's GPT-4o-mini for AI features; we clearly explain what is sent, ask for your explicit consent, and never share your data for advertising or model training. Read our full policy at slimba.pro/privacy. Start your weight loss journey today with a smart plan that fits your life — not the other way around.

About

Челленджи

Read full description

Поставь себе челлендж и держись: 7, 21 или 30 дней. Без сахара, без рилсов, спорт каждый день, холодный душ - выбери из готовых идей или впиши своё. Дальше приложение считает само: какой сегодня день, сколько процентов пройдено и сколько осталось. Каждый выдержанный день закрашивается в календаре. Что внутри: • Готовые идеи: можно сразу начать челлендж • Отметки автоматически или вручную, если день нужно подтверждать самому • Заморозки: пропустил день - серия не сгорает, две штуки в месяц • «Зачем»: твоя причина и ритуал-подсказка прямо на экране челленджа • Календарь, где сразу видно закрашенные дни, пропуски и заморозки • Награды за 7, 21 и 30 дней • Карта года и статистика: завершено, прервано, лучший результат • Виджеты на домашний экран - прогресс перед глазами, отметить день можно прямо оттуда • Одно напоминание в день, во сколько удобно или конкретное на каждом челлендже • Тёмная и светлая тема

Screenshots

Slimba!4 screens
Челленджи4 screens

Verdict

The call

The clearest difference is iOS requirement: Slimba! at 16.0 against Челленджи's 26.0. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 5 level
Slimba! versus Челленджи: the parameters behind the verdict, then further details
ParameterSlimba!Челленджи
PriceFreeFree
Update frequencyEvery 5 weeks—
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better26.0
Further details — not scored
Size4 MB2 MB
Age rating4+4+
DeveloperSergey BobinErik Salahyan

In-app purchases

None

Slimba!

No in-app purchases

None

Челленджи

No in-app purchases

Questions

Is Slimba! free?
Slimba! is free to download, with no in-app purchases.
Is Челленджи free?
Челленджи is free to download, with no in-app purchases.
Do Slimba! or Челленджи have ads?
Neither Slimba! nor Челленджи shows ads.

Other comparisons