Comparison

QuitCaff vs HALFLIFE

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

Head to head
About

QuitCaff

Features
Read full description

QuitCaff helps you track, reduce, and quit caffeine at your own pace. Whether you want to cut back gradually or stop completely, QuitCaff gives you the clarity and structure to take control of your caffeine habits. • Track daily caffeine intake • Log coffee, energy drinks, soda, and custom drinks • See clear charts of your consumption trends • Set reduction goals • Monitor progress over time • Stay consistent during withdrawal phases If you're ready to feel more in control of your energy — without relying on caffeine — QuitCaff gives you the structure to make it happen. Start today. Reduce gradually. Feel the difference.

About

HALFLIFE

This app helps you quit caffeine by providing a personalized tapering plan based on your intake. It predicts withdrawal symptoms and visualizes caffeine's impact on sleep, guiding you through a science-based approach to reduce consumption without suffering.

Highlights
  • Personalized taper schedule
  • Daily caffeine budget
  • Withdrawal symptom predictor
  • Real-time half-life calculator
  • Caffeine-sleep impact visualizer
  • Symptom logging
  • Substitution suggestions
Features
Read full description

You tried to quit caffeine cold turkey. By day two, the headache was unbearable, you couldn't focus at work, and you caved. You're not weak -- you're experiencing a medically recognized withdrawal syndrome (DSM-5 code 292.0). And the cold-turkey approach is the reason 80% of people fail. HALFLIFE is the first app that treats caffeine like what it is: a psychoactive drug with a 5-6 hour half-life, predictable withdrawal symptoms, and a clinically recommended tapering protocol. You don't quit caffeine -- you taper off it. HOW IT WORKS Tell the app what you drink -- coffee, energy drinks, tea, soda, pre-workout, even chocolate. HALFLIFE calculates your true daily caffeine intake (most people underestimate by 40-60%) and builds a personalized taper plan that reduces your consumption by 10-25% per week. Each day you get a caffeine budget -- not a prohibition, but a shrinking allowance. You choose how to spend it. One smaller coffee? Switch to half-caf? Green tea instead of espresso? The budget decreases on schedule until you reach your goal. PREDICT WITHDRAWAL BEFORE IT HITS HALFLIFE maps your expected symptoms to a medical timeline: when headaches will peak, when fatigue resolves, when brain fog clears. "Day 3: Expect moderate headache. Peak intensity: tomorrow. Resolution: day 7." The unknown becomes known. Fear becomes a plan. SEE WHAT CAFFEINE DOES TO YOUR SLEEP Your 3pm coffee means 47mg of caffeine is still in your bloodstream at midnight. Your "afternoon pick-me-up" is costing you deep sleep every single night. HALFLIFE's real-time pharmacokinetic timer shows exactly how much caffeine remains in your system at any moment -- based on published half-life research (5.7-hour average metabolism). Once you see the numbers, you can't unsee them. BUILT ON SCIENCE, NOT WILLPOWER - Personalized taper schedule based on your actual intake - 50+ drinks and caffeine sources with accurate mg data - Daily caffeine budget that decreases on a medical schedule - Withdrawal symptom predictor mapped to clinical timelines - Real-time half-life decay calculator - Caffeine-sleep impact visualizer - Symptom logging to track predicted vs. actual experience - Substitution suggestions for every reduction step Caffeine withdrawal is recognized by the DSM-5, and gradual tapering is recommended by the Cleveland Clinic, Mayo Clinic, and the American Academy of Sleep Medicine. HALFLIFE applies this clinical protocol to your specific intake -- so you can quit without the suffering that made you restart last time. The people who beat caffeine don't white-knuckle it. They follow a protocol. This is yours. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

QuitCaff4 screens
HALFLIFE4 screens

Verdict

The call

The clearest difference is ads: QuitCaff at none against HALFLIFE's shown. QuitCaff also leads on iOS requirement (15.1 vs 17.0). On price, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. QuitCaff sells 1 one-off in-app purchase and HALFLIFE sells 4 in-app purchases, starting at $8.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences · 7 level
QuitCaff versus HALFLIFE: the parameters behind the verdict, then further details
ParameterQuitCaffHALFLIFE
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequency—Fortnightly
AdsNo — betterYes
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size48 MB27 MB
Age rating4+4+
DeveloperGlenn FrancisTorben Nils Seidler

In-app purchases

1 purchases

QuitCaff

One-time1
  • Pro$9.99
4 purchases

HALFLIFE

Subscriptions3
  • Weekly$8.997 Days
  • 3 Months Pro$24.993 Months
  • Annual$79.991 Year
One-time1
  • Lifetime Access$149.99

Questions

Is QuitCaff free?
QuitCaff is free to download, with in-app purchases available.
Is HALFLIFE free?
HALFLIFE is free to download, with in-app purchases available.
Do QuitCaff or HALFLIFE have ads?
HALFLIFE shows ads; QuitCaff does not.

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