Comparison

Kenki vs PepStack

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

Head to head
About

Kenki

This app uses AI to automatically log your food intake and create personalized workout plans. It tracks nutrition, offers meal planning, and provides coaching insights to help you reach your health and fitness goals.

Highlights
  • AI food logging via voice, text, or photo
  • Personalized strength training programs
  • Automated workout progression
  • Fasting tracking
  • AI-powered health and diet advice
  • Meal planning and recipe suggestions
  • Integration with Apple Health
Features
Read full description

Tracking that feels easy. Just say what you ate, or snap your plate. Kenki handles calories, fasting and training so easily you'll actually stick with it. Magic Log: just say, type or photograph what you ate and the AI logs it with the macros, portions and calories. In the gym, Kenki writes your program around the main lifts, you log your sets, and the next session adds the weight for you. Fasting runs itself from the meals you already log. Nutrition and tracking • Log calories, macros, water and weight, and see your history in simple charts • Set macro targets that base your protein on your bodyweight, with presets for low-carb, keto or high-protein • Scan barcodes to log food quickly. Tap the scan icon in the search bar • Photograph your plate: the AI logs every dish, and you can tell it what to fix • Ask a question about diet, fitness or health and get a written, science-based answer • Plan meals up to two weeks ahead in the diary Meal planning • Browse recipes with photos and put together a day or a full week • Let "Surprise me" fill your week based on your goals and the foods you avoid • Read recipes in your own language • Build your own recipe with live nutrition • Point your camera at a restaurant menu and get suggestions that fit your day Strength training • Tell Kenki your equipment and how much time you have, and it writes a program around the main lifts • You log the weight, reps and RIR for each set, and the next session adjusts to what you logged • The workout screen has warm-up sets, a rest timer, per-set logging and a way to swap exercises mid-session • Holds like the plank run on time instead of reps, and warm-up is its own item to tick off • Hundreds of exercises with instructions, and you can add your own when the catalog is missing one • See trends and personal records for every lift Fasting • Track your eating window and how long you've been fasting • See the metabolic phase you're in • Pick 16:8 or another rhythm that fits you Your coach • Every week, Kenki reviews your logs: what went well, what slipped, what to focus on next • A daily brief turns your numbers into a concrete next step or two • Insights connect food, training, sleep and recovery: protein timing, a stalled lift, calories creeping late, a short night before a hard session • Ask your coach about your own trends and get a straight answer Streaks and referrals • Daily streak with milestone cards at 7, 30, 100 and 365 days, plus a premium freeze for one missed day • Invite a friend: once they subscribe to Premium, you both get 30 days free Apple Health and widgets • Kenki reads your weight, steps, active energy and workouts from Apple Health, and writes your food and water back to it • A home screen widget shows today's numbers • iPad: side rail instead of the bottom bar, two columns Premium Premium adds auto-progression, unlimited AI questions, full meal planning, deeper tracking, a calorie target that moves with your real activity, and meal plans that account for training days. Privacy Free accounts keep your data on your device. With Premium it also syncs to your account across every device. We don't sell your data or share it with advertisers. Please note: Kenki gives you information, not medical advice. Talk to a healthcare professional before making decisions about your health. Subscription Details: • Premium monthly or annual, the price for your country is shown in the app • Payment is charged to your Apple ID account at confirmation of purchase • Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period • You can manage or cancel your subscription anytime in your App Store account settings • A 7-day free trial is included with new subscriptions Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://kruxdev.com/datenschutz.html

About

PepStack

Read full description

PepStack – Stacks, Vitals, Blood & Training Plan your stack. Track your progress. See what actually works. PepStack is built for people who take their supplements seriously — and want to see how their stack relates to their body, blood and performance. Instead of five apps and a spreadsheet, it’s all in one place, neatly connected and fully private. Four areas, one picture: Stacks Build custom supplement stacks: compound, amount, dosage, schedule and phases — exactly how you run them. A visual plan shows what’s due when, and reminders make sure you never miss a dose. Vitals Connect Apple Health or Health Connect to pull in steps, sleep, resting heart rate, HRV and more automatically — or log your own metrics by hand. See how your routine shows up in daily life. Blood Log your blood tests — manually or via photo/PDF scan — and keep 100+ markers in view. With a plain-language marker wiki, personal reference ranges, trend charts and a side-by-side comparison of two tests (improved / worse / stable). Training Log your workouts, sets and progress and close the loop: stack, recovery and performance in one app. Everything in context The real value isn’t single numbers — it’s the full picture. Watch how your stack, vitals, blood markers and training move together over time, and make better decisions for yourself. Private by design Sensitive data is end-to-end encrypted — only you have access. Secure cloud backup & sync across your devices. No data sales. Your data is yours. Full stop. Who’s it for? Biohackers, athletes, self-optimizers and anyone ready to move their supplement routine from sticky notes to a clean, data-driven system. Stop guessing. Start tracking. Get PepStack. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://www.pepstack.net/de/privacy Support: https://www.pepstack.net/contact

Screenshots

Kenki4 screens
PepStack4 screens

Verdict

The call

Kenki and PepStack are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Kenki sells 3 in-app purchases, starting at $8.99 per month and PepStack sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

ScorecardNo meaningful differences
Kenki versus PepStack: the parameters behind the verdict, then further details
ParameterKenkiPepStack
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 daysEvery 2 days
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.515.5
Further details — not scored
Size75 MB85 MB
Age rating4+4+
DeveloperFELIX KRUGERMax Berktold

In-app purchases

3 purchases

Kenki

Subscriptions3
  • NutriDoc Premium Monthly7 Days trial$8.991 Month
  • Kenki Premium Annual - 40% off$32.991 Year
  • NutriDoc Premium Annually7 Days trial$54.991 Year
2 purchases

PepStack

Subscriptions2
  • PepStack Premium (Monthly)$2.991 Month
  • PepStack Premium (Yearly)$22.991 Year

Questions

Is Kenki free?
Kenki is free to download, with in-app purchases available.
Is PepStack free?
PepStack is free to download, with in-app purchases available.
Do Kenki or PepStack have ads?
Neither Kenki nor PepStack shows ads.
Which is updated more often, Kenki or PepStack?
Kenki ships an update every 2 days, and PepStack every 2 days. Most recently, Kenki was updated on October 30, 2026 and PepStack on October 31, 2026.

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