Emotion Tracker vs Fasto
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Emotion Tracker
Log your positive and negative emotions to gain self-awareness. Visualize your mood trends with charts and statistics, and search your history to identify well-being triggers. Set customizable reminders to help you stay consistent.
- Emotion logging
- Mood tracking with charts
- Historical data search
- Customizable reminders
- iCloud data syncing
- Detailed statistics (premium)
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Track your emotions to better understand yourself. FEATURES • Write down your positive and negative emotions. • Track your mood. View charts and monthly statistics to get a better understanding of yourself. • Search your history to understand what impacts your well-being. • Reminders (Off, Daily, Weekly). Emo+ • Tags. • Bookmarks. • More detailed statistics. iCloud support. Sync data across all your devices. All your data is securely stored on your device and in your iCloud. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Fasto
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One payment, for life: no subscription, no ads, no account. Fasto is an intermittent fasting timer that explains, hour by hour, what is happening inside your body — and shows you the study behind every claim it makes. WHAT YOU WILL NOT FIND No in-app purchases. No analytics and no trackers. And no servers of ours: your fasts live on your iPhone and, if you turn sync on, in your own iCloud. Never in mine. It works offline. SCIENCE WITH ITS SOURCE ATTACHED The eight metabolic phases cite the published work they rest on, with a direct link to PubMed so you can read it yourself. So does the guide on breaking your fast. And where the literature does not support a claim, Fasto does not make it: no miracle promises, no tidy numbers without evidence. WHILE YOU FAST • An animated ring with your progress, the phase you are in and a countdown to the next one. • Eight phases from 0 to 72 h: stabilisation, glycogen, gluconeogenesis, early ketosis, full ketosis, autophagy, deep autophagy and immune renewal. • Tips that change with the phase, a water counter, and an alert as each phase begins. ON YOUR WRIST AND ON YOUR SCREEN • An Apple Watch app to start and stop from your wrist, plus watch face complications. • Home Screen and Lock Screen widgets with a button, without opening the app. • A Live Activity in the Dynamic Island: your fast always in sight. ON ALL YOUR DEVICES Your fasts sync over iCloud between iPhone and iPad. No account and no servers of ours — it is your iCloud. Change phones and your history is still there. And on iPad it is not the iPhone app stretched out: it has its own two-column layout. Everything scales with Larger Text and works with VoiceOver. WHEN YOU FINISH A summary of what you achieved, the phase you reached, your personal record — and a guide on how to break the fast based on the hours you lasted, because coming off 14 h and coming off 30 h are nothing alike. YOUR HISTORY, WITH INSIGHTS Total, average and record, plus the patterns behind why you tend to stop, how each fast actually felt, and which durations suit you best. Milestones that add up and are not lost the day you slip. YOUR MEASUREMENTS, NO VERDICTS Log your weight and waist whenever you like and see how they change over 30, 90 or 180 days. Fasto shows the numbers and their variation, with no good-or-bad colours and no punishing streaks. The reading is yours and your doctor's. TO TAKE TO YOUR DOCTOR A PDF report with your period, frequency, adherence and longest fasts, ready to share. If your doctor is going to weigh in on your fasting, let them do it with data. A PLAN FOR EVERY PACE 12:12, 14:10, 16:8, 18:6, 20:4, OMAD and custom. Forgot to hit start? Adjust the time whenever you like. IN SIX LANGUAGES English, Spanish, French, Italian, German and Brazilian Portuguese, switchable inside the app. Light theme, dark theme or follow the system. ONE PAYMENT, FOR LIFE You buy Fasto once and it is yours forever. Every feature and every future update is included. No premium tier, nothing behind a paywall, no renewal reminders. IMPORTANT NOTICE Fasto is an informational and educational tool. It is not a medical device: it does not diagnose, treat, cure or prevent any disease, and it is never a substitute for the judgement of a healthcare professional. ALWAYS consult your doctor before starting any fasting routine. This matters especially if you are pregnant or breastfeeding, if you have or have had an eating disorder, if you have diabetes, kidney or liver conditions, if you are under 18, or if you take medication that must be given with food. Use of this app is the sole responsibility of the user. The developer accepts no responsibility for the decisions you make or for the consequences of applying fasting to your health. If at any point you feel unwell, dizzy or weak, stop fasting and seek medical attention.
Screenshots
Verdict
The clearest difference is price: Emotion Tracker at Free against Fasto's $2.99. Fasto's advantage is in-app purchases (none vs 4) and update cadence (every 3 days vs every 6 weeks). On ads 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
Emotion Tracker is free to download; Fasto costs $2.99 up front. Emotion Tracker sells 4 in-app purchases, starting at $0.99 per 7 days. Fasto asks for nothing beyond the download.
Emotion Tracker ships an update every 6 weeks, Fasto every 3 days. Both last shipped on November 7, 2026.
| Parameter | Emotion Tracker | Fasto |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Best chart rank | — | #191 — better |
| Devices | iPhone | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 7 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | NEXT PLANET | RAUL JIMENO MARTINEZ |
In-app purchases
Emotion Tracker
- Weekly$0.997 Days
- Monthly$1.991 Month
- Yearly$6.991 Year
- Lifetime$14.99
Fasto
No in-app purchases









