kcalio vs Fasting Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
kcalio
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Kcalio makes it easy to understand your body. Whether you want to track your fitness, adjust your macros, or check your daily calorie needs — Kcalio gives you clean, simple tools powered by accurate formulas. Included calculators: • BMI & ideal weight • BMR & TDEE (daily energy needs) • Body Fat % • Waist-Hip Ratio • Macros calculator • Hydration needs • VO₂max fitness estimator • Weight goal planner • Caloric deficit calculator No accounts. No sign-ups. No data collection. Just fast, accurate health calculations — all on your device.
Fasting Tracker
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Start fasting in seconds. Pick a plan, tap start, and your timer begins counting down through every fasting zone from fat burning to deep autophagy. No sign-up, no account, no bloat. Just open the app and go. Fasting Tracker makes intermittent fasting simple and visual. Watch your progress through color-coded fasting zones that show exactly what your body is doing at each stage. The 16:8, 18:6, 20:4, and custom schedules are all one tap away. Track your weight over time with a clean chart that shows real progress. Log your water intake to stay hydrated during fasts. Build fasting streaks that keep you motivated day after day with streak freezes when life gets in the way. Kiwi, your fasting companion, cheers you on as you hit each zone and celebrates every completed fast. Stats show your total fasting hours, longest streak, and weekly patterns so you can see how far you have come. Syncs with Apple Health to keep all your health data in one place. Works offline, runs locally, and respects your privacy completely. Fasting is the simplest way to feel better. This is the simplest way to fast. https://www.apple.com/legal/internet-services/itunes/dev/stdfla/
Screenshots
Verdict
The clearest difference is in-app purchases: kcalio at none against Fasting Tracker's 4. kcalio also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). Fasting Tracker's advantage is ads (none vs shown). On price 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
Both are free to download. Fasting Tracker sells 4 in-app purchases, starting at $4.99 per 7 days. kcalio asks for nothing beyond the download.
| Parameter | kcalio | Fasting Tracker |
|---|---|---|
| Price | Free | Free |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 40 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Jakub Fryga | Cloud Motion Lab LLC |
In-app purchases
kcalio
No in-app purchases
Fasting Tracker
- Pro Weekly3 Days trial$4.997 Days
- Yearly Pro$19.991 Year
- Lifetime Pro - Offer$19.99
- Lifetime$29.99









