# CaffSense: Caffeine & Sleep — Caffeine cutoff, any shift

> Caffeine cutoff, any shift (iPhone/iPad app by Juraj Dollinger-Lenharcik.)

- Source: https://appshunter.io/ios/app/caffsense-caffeine-and-sleep/id6778919665 (this page in markdown: same URL + `.md`)
- Developer: [Juraj Dollinger-Lenharcik](https://appshunter.io/developer/1885930418)
- Category: Health & Fitness
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 4 MB
- Languages: German (Germany), American English, French (France), European Spanish
- Released: 2026-06-17
- Data updated: 2026-09-03
- User reviews in markdown: https://appshunter.io/ios/app/caffsense-caffeine-and-sleep/id6778919665/reviews.md

## What is CaffSense?

Love coffee. Sleep better anyway.

CaffSense shows the caffeine in your body right now on a live half-life curve — and the exact time to stop so it's out of the way by bedtime.

Then it goes further: by quietly comparing your caffeine timing with your Apple Health sleep, CaffSense learns how your body clears caffeine — faster or slower than the textbook 4 hours — and tunes your curve and cutoff to match you.

• Live "caffeine on board" gauge & curve
• Your personal cutoff time
• One-tap logging, widget & Apple Watch
• Sleep-pattern insights from Apple Health
• Shift Mode for early, late and night shifts

**Working shifts?** Turn on Shift Mode and pick early, late or night. CaffSense moves your cutoff to the sleep window that actually follows your shift — not a fixed evening bedtime. It still uses your own logged intake and your learned half-life, so the time is yours, not a generic rule of thumb.

Private by design: your caffeine and sleep data stay on your iPhone. No account, no ads, no data sharing. Anonymous usage stats with no personal data — switchable off in Settings.

Free: today's curve & cutoff. Pro: full history, personal half-life & sleep insights.

Not medical advice. Patterns are observational and may be affected by stress, alcohol, exercise, illness, medication, and data quality.

CaffSense Pro: $1.99/month or $9.99/year. Your subscription renews automatically unless you cancel at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store settings.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://caffsense.com/privacy/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| CaffSense Pro (Monthly) | $1.99 | per month |
| CaffSense Pro (Yearly) | $9.99 | per year |



## Version history (last 5 releases)

### 1.0.14 — 2026-08-26

Restoring a purchase now checks your existing subscription first, so dismissing the App Store sign-in prompt no longer hides it behind an error message. The caffeine half-life setting now uses your language's decimal separator.

### 1.0.13 — 2026-08-04

Reworked purchase and restore: errors are now reported clearly instead of failing silently.

### 1.0.12 — 2026-07-26

New: Shift Mode. Pick early, late or night, and CaffSense moves your caffeine cutoff to the sleep window that actually follows your shift — based on what you logged and your learned half-life. Each shift can keep its own sleep anchor.

Also in this update: the cutoff now shows the date when it falls on another day, and says clearly when it has already passed. App, widget and Apple Watch show the same value throughout.

### 1.0.11 — 2026-07-18

This update makes CaffSense more reliable and easier to use: clearer purchase and notification states, consistent history and streak calculations, improved what-if planning, and more accurate widgets. It also includes accessibility and localization refinements.

### 1.0.10 — 2026-07-10

Reduction mode now displays correctly for Pro subscribers who haven't started a weekly target yet. Refined the Today screen layout.

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## More apps by Juraj Dollinger-Lenharcik

- [Upkeptly – Home & Car Care](https://appshunter.io/ios/app/upkeptly-home-and-car-care/id6760917393)
- [Bounce & Shatter](https://appshunter.io/ios/app/bounce-and-shatter/id6761115011)
- [CaveDash: Cave Puzzle](https://appshunter.io/ios/app/cavedash-cave-puzzle/id6761206027)
- [Brim - Smart Water Tracker](https://appshunter.io/ios/app/brim-smart-water-tracker/id6761324419)
- [NebenkostenKlar](https://appshunter.io/ios/app/nebenkostenklar/id6761461137)
- [Abfindly – Abfindungsrechner](https://appshunter.io/ios/app/abfindly-abfindungsrechner/id6761494617)

All apps by Juraj Dollinger-Lenharcik: https://appshunter.io/developer/1885930418

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*