Comparison

Weight Loss with a Samurai AI vs Roundwork

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

Head to head
About

Weight Loss with a Samurai AI

This app uses an AI coach to help users achieve their weight loss goals by tracking meals, workouts, and weight. It offers personalized guidance through chat and calls, and visualizes future body transformations to maintain motivation. The focus is on building sustainable habits rather than strict dieting.

Highlights
  • AI coach for habit support
  • Meal tracking via food photos
  • Automatic calorie estimation
  • Weight and workout logging
  • Future body visualization
  • Health app integration
Features
Read full description

■ An AI Body-Make App for People Who Struggle to Stick With Dieting “I want to lose weight this time.” But somehow, it never seems to last. • Tracking meals becomes tiring • You’re not sure what exercises to do • Motivation drops when you’re doing it alone SOULRiZA helps solve these problems with your AI coach, "AI Nobunaga". SOULRiZA is a new type of body-make app where you can track meals, workouts, and weight while chatting with an AI avatar that supports your daily habits. --- ■ Your AI Coach Supports Your Daily Habits In SOULRiZA, you can talk with the lifelike AI avatar AI Nobunaga in real-time through calls and chat. • What should I eat today? • What kind of workout should I do? • I’m not feeling motivated today… Whenever you feel unsure, just talk to AI Nobunaga. Based on your weight, meal, and activity data, AI Nobunaga suggests the best actions for you right now. Your personal AI body-make coach is always there to guide you. --- ■ Simply Take a Photo to Track Your Meals Logging meals is easy. Just upload a photo of your food. AI analyzes the meal and automatically estimates the calorie intake. No complicated input is required, so even beginners can manage their diet easily. --- ■ Easily Record Workouts and Weight SOULRiZA lets you track: • Weight logs • Workout records • Daily body changes Everything is organized in a simple dashboard, so you can clearly see your progress over time. --- ■ See Your Future Self Based on your photo, height, current weight, and goal weight, AI generates an image of your future body. Seeing the version of yourself you’re working toward helps keep your motivation strong. --- ■ Designed to Help You Keep Going SOULRiZA focuses on "sustainable habits", not strict dieting. • Record weight with one tap • Log meals with just a photo • Exercise whenever you can No pressure. Just a system designed to help you keep going. --- ■ Start for Free SOULRiZA is free to download and get started. You can simply begin by chatting with AI Nobunaga. Your AI coach will support your body-make journey every step of the way. --- ■ Main Features • Habit support by AI Nobunaga (Real-time calls and chat) • Automatic calorie estimation from food photos • Weight and workout tracking • Body-make dashboard • AI-generated future body visualization • Health app integration • Alarms and notifications • Easy login with Apple / Google / Email --- Body transformation isn’t about pushing yourself harder. It’s about "continuing your habits". Start your journey toward your ideal self with your AI coach. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Roundwork

Features
Read full description

Roundwork is a clean, focused interval timer for HIIT, Tabata, EMOM and circuit training. Set up a workout with four values: lead-in, work time, rest time and number of rounds. The timer guides you through each phase with clear on-screen colors and audio cues, so you always know whether to push or recover. FEATURES • Four-parameter setup: lead-in, work, rest, rounds • Five ready-made presets — Classic, Tabata, EMOM, Boxing, Sprint — plus your own • Clear phase colors and audio signals for every transition • Live heart rate during your workout • Standalone Apple Watch app: start a preset on your wrist, no iPhone needed • Haptics you feel at every change, with a 3-2-1 countdown • Complication for your watch face and the Smart Stack • Saves your session to Apple Health as a workout • Week overview with last week to compare — tap a day to see what you trained • Choose from a wide range of activity types • Live Activity on the Lock Screen and Dynamic Island • Simple, distraction-free design No accounts, no clutter. Open the app, set your intervals and train.

Screenshots

Weight Loss with a Samurai AI4 screens
Roundwork4 screens

Verdict

The call

The clearest difference is in-app purchases: Roundwork at none against Weight Loss with a Samurai AI's 5. Roundwork also leads on ads (none vs shown). Weight Loss with a Samurai AI's advantage is iOS requirement (14.0 vs 26.0). On price, update cadence 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. Weight Loss with a Samurai AI sells 5 in-app purchases, starting at $0.99 per month. Roundwork asks for nothing beyond the download.

UpkeepUpdate frequency

Weight Loss with a Samurai AI ships an update fortnightly, Roundwork every 2 weeks. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

Scorecard3 real differences · 5 level
Weight Loss with a Samurai AI versus Roundwork: the parameters behind the verdict, then further details
ParameterWeight Loss with a Samurai AIRoundwork
PriceFreeFree
Positive reviews85.0% of reviews—
Update frequencyFortnightly — betterEvery 2 weeks
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, Apple Watch
Requires iOS14.0 — better26.0
Further details — not scored
Size283 MB4 MB
Age rating12+4+
DeveloperAI Avatar CorpDominik Meierhofer

In-app purchases

5 purchases

Weight Loss with a Samurai AI

Subscriptions2
  • Alarm Monthly1 Month trial$0.991 Month
  • Conversation Monthly1 Month trial$5.991 Month
One-time3
  • Coin Package S: 1,200 coins$4.99
  • Coin Package M: 3,000 coins$9.99
  • Coin Package L: 6,500 coins$19.99
None

Roundwork

No in-app purchases

Questions

Is Weight Loss with a Samurai AI free?
Weight Loss with a Samurai AI is free to download, with in-app purchases available.
Is Roundwork free?
Roundwork is free to download, with no in-app purchases.
Do Weight Loss with a Samurai AI or Roundwork have ads?
Weight Loss with a Samurai AI shows ads; Roundwork does not.
Which is updated more often, Weight Loss with a Samurai AI or Roundwork?
Weight Loss with a Samurai AI ships an update fortnightly, and Roundwork every 2 weeks. Most recently, Weight Loss with a Samurai AI was updated on October 7, 2026 and Roundwork on October 10, 2026.

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