Gluk vs Cal Diary
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Gluk
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Gluk transforms how you track hydration with our science-based HP (Hydration Point) system. BEYOND SIMPLE WATER TRACKING Most apps count glasses of water. Gluk calculates your TRUE hydration contribution from every beverage - because a cup of coffee hydrates differently than a glass of water. THE HP SYSTEM Our Hydration Point algorithm is based on the Beverage Hydration Index (BHI) research. Each drink you log shows: - Actual hydration contribution (not just volume) - Mineral intake (Na, K, Mg, Ca) - Progress toward your personalized daily goal TRACK 6 POPULAR BEVERAGES - Water & Mineral Water - Filter Coffee & Americano - Latte - Black Tea FEATURES - Quick logging in under 3 taps - Daily HP score and progress tracking - Weekly and monthly analytics - Streak tracking to build healthy habits - Smart reminders to stay hydrated - Works offline - syncs when connected PERSONALIZED GOALS Your daily hydration target is calculated based on your body weight, giving you a goal that actually makes sense for you. PRIVACY FIRST Your health data stays private. We don't sell your information. Start understanding your hydration today with Gluk.
Cal Diary
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Cal Diary turns calorie tracking into a 3-second snap. No spreadsheet apps. No 50,000-food database to scroll. Just photo, log, done. - Photograph your meal and AI estimates calories and macros - Daily protein, carb, fat targets - TDEE calculator (Mifflin-St Jeor, 5 activity levels) - Cut, maintain, or bulk goals (+/- 500 kcal) - Manual entry when precision matters - Weight log with weekly and monthly trend - Clean monochrome design, no ads, no feed, no clutter - 8-step setup, under 2 minutes Privacy-first: on-device storage. No account required. Privacy Policy: https://andriimakarevych.com/calories-counter/privacy Terms of Use: https://andriimakarevych.com/calories-counter/terms
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Verdict
The clearest difference is in-app purchases: Gluk at none against Cal Diary's 3. Gluk also leads on iOS requirement (13.0 vs 18.0). Cal Diary's advantage is update cadence (every 3 days vs every 2 weeks). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Cal Diary sells 3 in-app purchases, starting at $4.99 per 7 days. Gluk asks for nothing beyond the download.
Gluk ships an update every 2 weeks, Cal Diary every 3 days. The most recent releases landed on October 28, 2026 and November 5, 2026 respectively.
| Parameter | Gluk | Cal Diary |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 3 days โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPod โ better | iPhone |
| Requires iOS | 13.0 โ better | 18.0 |
| Further details โ not scored | ||
| Size | 54 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | PCI Yazilim Danismanlik ve Organizasyon Ltd. Sti. | Andrii Makarevych |
In-app purchases
Gluk
No in-app purchases
Cal Diary
- Weekly Premium3 Days trial$4.997 Days
- Monthly Premium$11.991 Month
- Annual Premium$49.991 Year









