Quit Caffeine vs Sunfold
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Quit Caffeine
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Quit Caffeine shows what coffee is actually doing to you โ right now. โ Your body's caffeine curve Log a drink with one tap and watch your body's caffeine level decay in real time on a live half-life chart. See exactly how much is still in your system at bedtime. โ Sleep guard Set your bedtime and a sleep threshold. The app tells you the latest time for your last coffee โ and warns you when one more cup would wreck tonight's sleep. โ Taper or quit โ your choice Reduce week by week with a gentle taper plan, or go caffeine-zero and count your streak. Both modes track your progress. โ Caffeine withdrawal timeline Know what commonly happens after cutting back โ headache peak around days 1โ2, energy dips, then steadier sleep and focus within weeks. General, science-informed info with milestone reminders. (Not medical advice.) โ Built-in drink database Espresso, drip, cold brew, teas, energy drinks, cola โ realistic caffeine amounts per size, plus custom entries. โ Private by design No account. No cloud. Everything stays on your device. One-time purchase removes all ads permanently.
Sunfold
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Sunfold is a quiet, warm intermittent fasting tracker. One ring, one number, and everything you need to know about where you are in your fast. THE TIMER Start when you finish your last meal. Sunfold counts from that moment โ close the app, restart your phone, the timer never drifts. A full-screen ring shows how far along you are, and the metabolic phases are marked around it. SCHEDULES 16:8, 18:6, 20:4, 5:2, or set your own length from 4 to 48 hours. Change your schedule mid-fast and the goal moves with you โ no need to start over. METABOLIC PHASES Watch your fast move from the fed state through early fasting, fat burning, ketosis and autophagy, with a plain-language explanation of each. Timings are presented as approximations, because that is what they are. HISTORY A streak calendar, total hours, average length, and every fast you have recorded. Add a note and how the fast felt. WEIGHT Optional. Log your weight, see the trend. No goal weight, no BMI, no judgement. WIDGETS AND DYNAMIC ISLAND Your timer on the Home Screen, the Lock Screen, and in the Dynamic Island as a Live Activity, ticking without draining your battery. REMINDERS When your fast is complete, thirty minutes before, and when your eating window closes. All scheduled locally โ Sunfold has no push server. PRIVACY No account. No sign-in. No analytics, no advertising, no tracking. Everything you record stays on your device, and you can export it all as CSV or delete it in one tap. SUNFOLD PRO Free forever: the 16:8 schedule and the last seven days of history. Pro unlocks every schedule, unlimited history, charts, the metabolic phases and widgets. $2.99/month, $14.99/year, or $34.99 once. Payment is charged to your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the period ends, and can be managed in App Store settings at any time. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sanchizas007.github.io/Sunfold/privacy/ IMPORTANT Sunfold is a timer and a journal, not a medical device. It does not diagnose, treat or give medical advice. Talk to a doctor before fasting if you are pregnant or breastfeeding, under 18, living with diabetes or taking medication that affects blood sugar, taking medicine that must be taken with food, underweight, or living with a chronic condition. If you have or have had an eating disorder, please seek support before using a fasting app.
Screenshots
Verdict
The clearest difference is ads: Sunfold at none against Quit Caffeine's shown. Quit Caffeine's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence and in-app purchases 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. Quit Caffeine sells 1 one-off in-app purchase and Sunfold sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Quit Caffeine ships an update fortnightly, Sunfold every 3 weeks. The most recent releases landed on October 25, 2026 and October 22, 2026 respectively.
| Parameter | Quit Caffeine | Sunfold |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly โ better | Every 3 weeks |
| Ads | Yes | No โ better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod โ better | iPhone |
| Requires iOS | 15.0 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 98 MB | 11 MB |
| Age rating | 4+ | 12+ |
| Developer | SEONYONG LEE | Olexandr Zhovnir |
In-app purchases
Quit Caffeine
- Remove Ads$1.99
Sunfold
- Sunfold Pro โ Monthly$2.991 Month
- Sunfold Pro โ Yearly$12.991 Year
- Sunfold Pro โ Lifetime$34.99








