Comparison

Coffee & Sleep vs Sunfold

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

Head to head
About

Coffee & Sleep

This app helps you understand your caffeine intake and its impact on your sleep. Log your drinks, track your caffeine levels throughout the day, and get predictions for when you'll be ready for sleep. Analyze your habits with historical data and customizable settings.

Highlights
  • Log various caffeinated drinks
  • Estimate active caffeine load
  • Predict sleep readiness time
  • View daily and historical caffeine data
  • Analyze drink patterns and insights
  • Customize drink caffeine content
  • Home screen widgets for key values
Features
Read full description

Coffee & Sleep helps you understand how long caffeine stays active in your body โ€“ and when sleep becomes realistic again. Log espresso, filter coffee, cappuccino, latte, energy drinks or black tea (or create your own drinks). The app estimates your current caffeine load using a metabolism model and shows how your intake evolves during the day. Features: Quick logging: choose a drink and adjust the time Sleep ready: prediction when caffeine drops below your sleep threshold Caffeine curve: view your active caffeine during the day Daily overview: last coffee, total mg and entries History: day-by-day overview Analytics & charts: interactive insights (7/14/30/90 days) Drink analytics: beverage mix and time patterns Custom drinks: define caffeine content yourself Settings: adjust half-life and sleep threshold Widgets: key values on your home screen Note: Coffee & Sleep provides estimates and does not replace medical advice. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Sunfold

Features
Read full description

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. Available monthly, yearly, or as a single payment. New subscriptions start with a three-day free trial. 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

Coffee & Sleep4 screens
Sunfold4 screens

Verdict

The call

The clearest difference is update cadence: Coffee & Sleep at weekly against Sunfold's every 3 weeks. On price, ads, in-app purchases 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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Coffee & Sleep sells 3 in-app purchases, starting at $3.99 per month 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.

UpkeepUpdate frequency

Coffee & Sleep ships an update weekly, Sunfold every 3 weeks. Both last shipped on October 31, 2026.

Scorecard1 real difference ยท 7 level
Coffee & Sleep versus Sunfold: the parameters behind the verdict, then further details
ParameterCoffee & SleepSunfold
PriceFreeFree
Positive reviews0.0% of reviewsโ€”
Update frequencyWeekly โ€” betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumโ€”
DevicesiPhoneiPhone
Requires iOS17.017.0
Further details โ€” not scored
Size7 MB11 MB
Age rating4+12+
DeveloperMarkus LoibnerOlexandr Zhovnir

In-app purchases

3 purchases

Coffee & Sleep

Subscriptions2
  • Pro โ€“ Monthly$3.991 Month
  • Pro โ€“ Yearly3 Days trial$11.991 Year
One-time1
  • Pro โ€“ Lifetime$17.99
3 purchases

Sunfold

Subscriptions2
  • Sunfold Pro โ€” Monthly3 Days trial$2.991 Month
  • Sunfold Pro โ€” Yearly3 Days trial$29.991 Year
One-time1
  • Sunfold Pro โ€” Lifetime$79.99

Questions

Is Coffee & Sleep free?
Coffee & Sleep is free to download, with in-app purchases available.
Is Sunfold free?
Sunfold is free to download, with in-app purchases available.
Do Coffee & Sleep or Sunfold have ads?
Neither Coffee & Sleep nor Sunfold shows ads.
Which is updated more often, Coffee & Sleep or Sunfold?
Coffee & Sleep ships an update weekly, and Sunfold every 3 weeks. Most recently, Coffee & Sleep was updated on October 31, 2026 and Sunfold on October 31, 2026.

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