Comparison

Uncaf vs Halvo

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

Head to head
About

Uncaf

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Quit caffeine without guessing your symptoms. Uncaf helps you understand withdrawal phases with science, not willpower. Know what's happening in your brain โ€” and what comes next. 5 RECOVERY PHASES Detox > Peak Reset > Stabilization > Rewiring > Freedom Each phase explains the neuroscience behind your symptoms: why you get headaches (adenosine receptor upregulation), why you feel foggy (dopamine pathway adjustment), and when it gets better (it does). DAILY CHECK-IN Log your mood, energy, and sleep quality in under 2 minutes. Over time, you'll see clear trends showing your recovery progress. CRISIS TOOLS When cravings hit, Uncaf responds instantly: - 4-7-8 Breathing Exercise - calm your nervous system in 60 seconds - Guided meditation and motivation - Distraction activities - Urge tracking with trigger analysis BRAIN FOG GUIDE Understand why brain fog happens during caffeine withdrawal and get actionable tips to manage it - hydration, movement, sleep strategies, and brain-friendly nutrition. YOUR JOURNEY See exactly where you are in your recovery, what's happening in your brain right now, and what the next phase brings. Premium unlocks data-driven personal insights. WEEKLY SUMMARY (Premium) Every Monday, get a snapshot of your week: mood trends, energy levels, sleep improvements, and urges resisted - all compared to the previous week. PROGRESS INSIGHTS (Premium) Beautiful trend charts for mood, energy, and sleep. See week-over-week comparisons and discover patterns (like how better sleep correlates with higher energy). STREAK SHIELD (Premium) Had a slip? Streak Shield protects your streak once per month, so one moment doesn't erase weeks of progress. - WHY UNCAF WORKS - Science-based - Built on caffeine withdrawal research and neuroscience - Phase system - Know exactly what to expect and when - No judgment - Relapses are handled with compassion, not shame - Privacy-first - Your data stays on your device (sync optional) - No ads - Ever - 7-DAY FREE TRIAL Try every feature free for 7 days โ€” no commitment. After your trial, choose a plan to continue your recovery journey. WHAT'S INCLUDED - Full 5-phase recovery guide with neuroscience - Daily check-ins with mood/energy/sleep tracking - Progress Insights โ€” trend charts and week-over-week analysis - Your Journey โ€” phase progress, data-driven advice, next phase preview - Weekly Summary โ€” Monday reports with trend comparison - Streak Shield โ€” monthly streak protection - All crisis tools (breathing, meditation, relapse support) - Brain fog guide, withdrawal timeline, daily messages - Full history access and notification customization CRISIS TOOLS โ€” ALWAYS FREE Breathing exercises, relapse recovery flow, and Brain Fog guide remain accessible even after your trial ends. We never lock you out when you need help most. - Uncaf is a wellness tool and does not provide medical advice. If you experience severe withdrawal symptoms, please consult a healthcare professional. Terms: https://lp.uncaf.app/terms Privacy: https://lp.uncaf.app/privacy

About

Halvo

Features
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Your last coffee decides your night. Halvo shows you how much caffeine is actually working in you right now โ€” and tells you the point after which the next cup starts costing you sleep. Your personal cut-off. Most caffeine apps count milligrams. Halvo works with the caffeine that actually reaches your system: it rises, peaks and fades. Halvo predicts how much of it is still there when you go to bed. YOUR PERSONAL CUT-OFF Everyone clears caffeine at a different speed. Halvo shows you the latest you can have a cup without too much of it still active when you fall asleep. LOG IN SECONDS Add coffee, espresso, tea, energy drinks, soda, mate or your own pre-workout in a few taps. Halvo sums it up automatically and shows how much is still working. ON YOUR HOME SCREEN AND ON YOUR WRIST The widget shows your level and your cut-off without opening the app โ€” one tap logs your favourite drink. In the evening it switches to "lights out" on its own. Plus Apple Watch with a complication for a glance-and-go check. SEE YOUR CURVE Watch caffeine rise, peak and fade on a real concentration curve โ€” and see exactly where you'll land when your head hits the pillow. A MODEL THAT LEARNS YOU โ€” HONESTLY (PRO) With your permission, Halvo reads your sleep, heart rate and HRV from Apple Health and learns your personal caffeine half-life over time. Here's what makes it different: when the signal in your data is too weak to be sure, Halvo says so and keeps using the population value โ€” instead of faking precision it doesn't have. WORKS WITH YOUR WEARABLES (PRO) Apple Watch, Oura, Whoop, Garmin โ€” anything that syncs sleep and heart data to Apple Health. Halvo never connects to those services directly; it only reads what's already in Apple Health. PRIVATE BY DESIGN Your intake and health data are processed on your device. Halvo doesn't sell your data. FREE & PRO Logging caffeine, seeing your curve, using the widget and finding your cut-off are free. Halvo Pro adds the personal learning model and the nightly sleep analysis. Halvo Pro: โ€ข Monthly โ€“ $3.99 โ€ข Yearly โ€“ $24.99 (with 1 month free) โ€ข Lifetime โ€“ $44.99 one-time (no subscription) Payment is charged to your Apple Account. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple Account settings. Lifetime is a one-time purchase. Prices may vary by region. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://halvo.jnmcloud.de/privacy.html Halvo is not a medical device and does not diagnose, treat or prevent any condition. It helps you make more informed choices about caffeine.

Screenshots

Uncaf4 screens
Halvo4 screens

Verdict

The call

The clearest difference is iOS requirement: Uncaf at 15.1 against Halvo's 17.0. On price, update cadence, ads 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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Uncaf sells 3 in-app purchases, starting at $9.99 per month and Halvo sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Uncaf ships an update every 3 weeks, Halvo monthly. The most recent releases landed on September 12, 2026 and September 8, 2026 respectively.

Scorecard1 real difference ยท 5 level
Uncaf versus Halvo: the parameters behind the verdict, then further details
ParameterUncafHalvo
PriceFreeFree
Update frequencyEvery 3 weeks โ€” betterMonthly
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, Apple Watch
Requires iOS15.1 โ€” better17.0
Further details โ€” not scored
Size43 MB8 MB
Age rating12+4+
DeveloperTakeaki ShimizuJan Niklas Molleken

In-app purchases

3 purchases

Uncaf

Subscriptions2
  • Monthly Plan7 Days trial$9.991 Month
  • Annual Plan7 Days trial$29.991 Year
One-time1
  • Lifetime Access$49.99
2 purchases

Halvo

Subscriptions1
  • Halvo Pro โ€“ Monthly$3.991 Month
One-time1
  • Halvo Pro Lifetime$29.99

Questions

Is Uncaf free?
Uncaf is free to download, with in-app purchases available.
Is Halvo free?
Halvo is free to download, with in-app purchases available.
Do Uncaf or Halvo have ads?
Neither Uncaf nor Halvo shows ads.
Which is updated more often, Uncaf or Halvo?
Uncaf ships an update every 3 weeks, and Halvo monthly. Most recently, Uncaf was updated on September 12, 2026 and Halvo on September 8, 2026.

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