Comparison

LumenAI vs Slim AI

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

Head to head
About

LumenAI

Effortlessly reflect on your thoughts and habits by speaking them aloud. This AI-powered voice journal transcribes your spoken entries, organizes them, and provides personalized insights to help you understand yourself better.

Highlights
  • Voice journaling with instant transcription
  • Text journaling with tags and formatting
  • Habit tracking with streak counter
  • Search and organization by keyword/tag/date
  • AI-powered insights and sentiment analysis
  • Mood and theme visualization
  • Export entries and insights
Features
Read full description

JournAI is your personal voice-first journaling app, designed to make self-reflection effortless. Simply speak your thoughts, and JournAI transcribes them into text, organizes them, and provides actionable insights powered by AI. Whether you’re looking to capture ideas, track your mood, or build better habits, JournAI keeps your journey simple and consistent. Key Features (Free): Voice Journaling: Record your thoughts and get instant, accurate transcriptions. Text Journaling: Prefer typing? Write entries with tags and formatting options. Habit Tracker: Build consistency with a streak counter and daily reminders. Search & Organization: Find entries easily with keyword, tag, or date filters. Weekly Summary (Basic): View entry counts and simple keyword highlights. Premium Features (with subscription): Advanced AI Insights: In-depth analysis of your weekly entries, including sentiment trends, recurring themes, and personalized suggestions. Mood & Theme Tracking: Visualize emotional patterns and key topics over time. Export & Share: Export entries or insights as text or PDF. Extended Storage: Unlimited history and secure cloud backup. Customization: Themes, reminder preferences, and more. Why JournAI? Unlike other journaling apps, JournAI puts your voice at the center. You don’t need to type every thought—just speak, save, and let AI help you discover patterns in your life. It’s journaling made easy, consistent, and insightful. Subscription & Pricing: JournAI offers a freemium model so you can start for free. Unlock Premium with a subscription: $4.99/month $49.99/year (best value) Subscriptions will be charged to your Apple ID account upon confirmation of purchase. Your subscription automatically renews unless canceled at least 24 hours before the end of the current billing period. You can manage or cancel your subscription anytime in your App Store account settings. Privacy & Terms: Your privacy matters. All journal entries are encrypted and securely stored. You’re always in control of your data. Privacy Policy: http://sketchmyapp.com/journai/privacy Terms of Service: http://sketchmyapp.com/journai/terms Start your journaling journey today with JournAI—speak your mind, track your habits, and discover meaningful insights every week.

About

Slim AI

Analyze meals from photos to understand their nutritional impact, including calories and macronutrients. Track activity, hydration, and fasting with personalized goal setting and health score evaluations. Sync data with health apps for a comprehensive overview of your well-being.

Highlights
  • Photo-based meal analysis
  • Calorie and macronutrient breakdown
  • Health Score for ingredient quality
  • Food label scanning
  • Personalized meal suggestions
  • Activity, hydration, and fasting tracking
  • Health app integration
Features
Read full description

Slim AI is an AI calorie tracker that counts calories and macros from one photo of your meal. Every meal also gets a Health Score from 0 to 100, so you see how much you eat and what that food does for your body. You don't have to type anything or dig through a food database. Point the camera at your plate, check the numbers and fix anything that looks off with one tap. HOW SLIM AI WORKS 1. Answer a short questionnaire about your body, your goal and your lifestyle. 2. Get daily calorie and macro targets calculated for you, not for an average person. 3. Log meals with a photo, a barcode, a food label or your voice. 4. Follow your calories, protein, carbs, fat and Health Score in one place. LOG FOOD IN SECONDS • Meal photo: AI recognizes the food on your plate and estimates calories and macros • Barcode scanner for packaged food • Food label scanner that reads the nutrition table for you • Voice logging: say what you ate and Slim AI adds it to your food diary • One-tap fix for any value, so you always have the final say HEALTH SCORE: MORE THAN CALORIES Two meals with the same calories can do very different things to your body. Slim AI scores every meal by looking at its ingredients, how processed it is and how much sugar, fat and fiber it has. Four risk scores show how a meal may affect acne, bloating, brain fog and aging. You also see the vitamins (D, C, B12, folate, A), minerals (magnesium, iron, potassium, calcium, zinc) and other nutrients (fiber, omega-3, sodium, cholesterol, antioxidants) in each meal. BODY ANALYSIS Take a photo of your body and Slim AI estimates your body fat percentage as a range within seconds. Then generate an AI visualization of the shape you could reach and see it side by side with how you look today. Save it or share it with friends. A PLAN THAT FITS YOUR GOAL • Lose weight, maintain your weight or gain weight and build muscle • Calorie and macro targets based on your body, your activity and your goal • Goal weight and weekly pace matched to your weight, height and goal • Protein tracking against your daily target • Pick your eating style (classic, keto, carnivore, vegetarian, vegan or pescatarian) and your macros and recipes adjust to it RECIPES FROM YOUR PRODUCTS Not sure what to cook tonight? Slim AI creates recipes from the products you already have, matched to your diet, with step-by-step instructions, calories and macros. FASTING, WATER AND ACTIVITY • Intermittent fasting tracker with ready-made or custom fasting windows, a live countdown and your fasting history • Water tracker with a daily target • Steps, workouts and burned calories synced from Apple Health WHO SLIM AI IS FOR • People who want to lose weight without logging every ingredient by hand • Gym-goers who track protein and macros to build muscle or cut fat • Anyone on keto, vegan, carnivore or intermittent fasting who wants an easy food diary • People curious how their food affects their skin, energy and digestion • Anyone who wants to know their body fat and see what their goal physique could look like Health Score, risk scores and body fat estimates are for informational purposes only and are not medical advice. FREE TRIAL AND SUBSCRIPTION The annual plan starts with a 3-day free trial that gives you full access to every feature. Slim AI offers auto-renewable subscriptions, and an active subscription is required to use the app after the trial. Payment is charged to your Apple ID account at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel it in your App Store account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Contact: slimai.app/en/contact Learn more: slimai.app

Screenshots

LumenAI3 screens
Slim AI4 screens

Verdict

The call

The clearest difference is rating: LumenAI at 5.0 against Slim AI's 3.8. LumenAI also leads on ads (none vs shown). Slim AI's advantage is ratings volume (6 vs 1). On price, review sentiment, in-app purchases and monetization model 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. LumenAI sells 2 in-app purchases, starting at $4.99 per month and Slim AI sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

LumenAI holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Slim AI has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Scorecard3 real differences · 7 level
LumenAI versus Slim AI: the parameters behind the verdict, then further details
ParameterLumenAISlim AI
PriceFreeFree
Rating5.0 (1 ratings) — better3.8 (6 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings16 — better
Update frequency—Every 8 days
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size31 MB85 MB
Age rating4+12+
DeveloperJames PeltonFUTURESOFT MAZUREK I NIEDZIELA SPOLKA KOMANDYTOWA

Customer experience

LumenAI

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Slim AI

All ratings6 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

LumenAI

Subscriptions2
  • Premium Monthly$4.991 Month
  • Premium Yearly (Save 17%)$49.991 Year
3 purchases

Slim AI

Subscriptions3
  • Monthly Plan$9.991 Month
  • App Access3 Days trial$22.991 Year
  • Annual Plan3 Days trial$34.991 Year

Questions

Is LumenAI free?
LumenAI is free to download, with in-app purchases available.
Is Slim AI free?
Slim AI is free to download, with in-app purchases available.
Which has better reviews, LumenAI or Slim AI?
LumenAI is rated higher. LumenAI averages 5.0 out of 5 from 1 ratings, while Slim AI averages 3.8 from 6 ratings.
Do LumenAI or Slim AI have ads?
Slim AI shows ads; LumenAI does not.

Other comparisons