Comparison

Deep Sky Diary vs calomee

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

Head to head
About

Deep Sky Diary

Record your thoughts and memories for your future self or send messages into the void. This app allows you to create regular diary entries, schedule future readings, or send messages that are permanently deleted.

Highlights
  • Regular diary entries
  • Scheduled future readings
  • Ephemeral black hole messages
  • Optional black hole receipt
Features
Read full description

Sometimes, you probably want to talk to your "future self", and sometimes, you probably want to just talk to nowhere. Deep Sky Diary is here for you. - Keep regular diaries - Write diaries for future you: set a date and read the diary after that day. - Write a diary and send it to the black hole (nowhere) * *: The message will be discarded and not saved on your local device. If you choose to save a receipt, a story with the title "Blackhole Receipt" will be saved.

About

calomee

Features
Read full description

Your Personal AI Diet Coach "calomee" - Achieve Your Ideal Body Solving "Can't Keep Going" with AI The real reason diets fail isn't lack of willpower—it's struggling alone, not knowing the right methods, and missing small victories. "calomee" changes this with AI as your personal coach, supporting you daily. Common Struggles? • Give up after three days • Find calorie tracking tedious • Feel uncertain and lose motivation • Don't know which method suits you • Struggling alone feels too hard • Want guidance but lack time or money Six Key Features 1. Personal AI Coach, 24/7 AI analyzes your logs and provides encouragement like a real trainer. Praises balanced meals and motivates you after setbacks. Choose your preferred coaching style. 2. Personalized Goals Calculates optimal calorie targets based on your birthdate, height, weight, gender, and activity level. Set realistic goals matching your lifestyle. Automatically calculates daily calorie adjustments from target weight and deadline. 3. Simple Recording • Photo auto-detection: Upload meal photos, AI identifies dishes and calories • Simple interface: Log meals/weight in few taps • No calculations: AI handles everything • Visualized progress: Graphs show trends at a glance 4. Motivation System • Daily AI encouragement • Visualized streaks • Customizable coach characters 5. Security Priority • Industry-standard authentication • Encrypted passwords • Automatic blocking of suspicious access • Strict personal data protection Easy password reset via email. 24/7 support through inquiry form. Recommended For • Beginners unsure where to start • Those who've failed before • People seeking healthy weight loss • Busy individuals • Those needing encouragement • Anyone wanting fun, game-like dieting Pricing Basic features FREE—meal logging, weight management, goal setting. Premium Plan: • Monthly: $5/month • Annual: $50/year ($4.17/month, 16% savings!) New users: 7 days FREE trial. Cancel anytime during trial—no charges. Getting Started 1. Download and register (free) 2. Enter birthdate, height, weight, goals 3. Start logging today! Registration takes 1 minute. calomee's Vision Transform dieting into an enjoyable habit of daily victories. Your AI coach is always beside you, encouraging and guiding. Sustainably. Healthily. Enjoyably. Start your journey today. Download free now. calomee—Your diet, always supported by AI. IMPORTANT NOTICES AI Technology Usage • Diet advice: AI analyzes records and generates encouragement/advice • Coach characters: AI-generated illustrations • Wallpapers/images: Some AI-generated decorative images AI advice provides general information, not medical advice. Occasionally inaccurate information may occur. Contact us if concerned. Medical Disclaimer This app is an informational tool, not a medical device. It does not replace physician diagnosis, treatment, or medical advice. Consult doctors before starting diets, especially if you: • Have health conditions/diseases • Are pregnant or nursing • Take prescription medications • Have history of eating disorders • Are under 18 Stop using and see a doctor if experiencing discomfort, dizziness, extreme fatigue, or abnormalities during dieting. Goals and advice are based on general formulas. Appropriate methods vary by individual health, constitution, and lifestyle. Rapid weight loss not recommended. Extreme calorie restriction or rapid weight loss may harm health. Developers and operators accept no liability for app usage results. Use at your own risk, prioritizing health and safety. Use this tool safely in combination with healthcare professional advice. By using this app, you agree to our Terms of Service (https://www.calomee.com/en/terms) and Privacy Policy (https://www.calomee.com/en/privacy).

Screenshots

Deep Sky Diary4 screens
calomee3 screens

Verdict

The call

The clearest difference is in-app purchases: Deep Sky Diary at none against calomee's 2. Deep Sky Diary also leads on ads (none vs shown) and update cadence (every 3 days vs weekly). On price, device support and iOS requirement 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. calomee sells 2 in-app purchases, starting at $2.99 per month. Deep Sky Diary asks for nothing beyond the download.

UpkeepUpdate frequency

Deep Sky Diary ships an update every 3 days, calomee weekly. The most recent releases landed on October 11, 2026 and September 29, 2026 respectively.

Scorecard3 real differences · 6 level
Deep Sky Diary versus calomee: the parameters behind the verdict, then further details
ParameterDeep Sky Diarycalomee
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 3 days — betterWeekly
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.1 — better15.1
Further details — not scored
Size8 MB57 MB
Age rating4+4+
DeveloperShunzhe MaYohei Kono

In-app purchases

None

Deep Sky Diary

No in-app purchases

2 purchases

calomee

Subscriptions2
  • Premium Plan$2.991 Month
  • premium plan$29.991 Year

Questions

Is Deep Sky Diary free?
Deep Sky Diary is free to download, with no in-app purchases.
Is calomee free?
calomee is free to download, with in-app purchases available.
Do Deep Sky Diary or calomee have ads?
calomee shows ads; Deep Sky Diary does not.
Which is updated more often, Deep Sky Diary or calomee?
Deep Sky Diary ships an update every 3 days, and calomee weekly. Most recently, Deep Sky Diary was updated on October 11, 2026 and calomee on September 29, 2026.

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