# PhaseShift: Jet Lag Planner — Sleep & Light Travel Schedule

> Sleep & Light Travel Schedule (iPhone/iPad app by DAEHONG MIN.)

- Source: https://appshunter.io/ios/app/phaseshift-jet-lag-planner/id6804650090 (this page in markdown: same URL + `.md`)
- Developer: [DAEHONG MIN](https://appshunter.io/developer/6787942588)
- Category: Travel, Lifestyle
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 16 MB
- Languages: American English, Korean
- Released: 2026-08-27
- Data updated: 2026-10-04
- User reviews in markdown: https://appshunter.io/ios/app/phaseshift-jet-lag-planner/id6804650090/reviews.md

## What is PhaseShift?

Arrive ready to enjoy your trip, not fight your body clock.

PhaseShift builds a personal jet lag adjustment schedule from your origin, destination, and travel dates. See when to seek or avoid bright light and when to sleep and wake, from the days before departure through your arrival.

KEY FEATURES

• Calculates your adjustment direction and estimated duration
• Combines pre-trip preparation and post-arrival guidance in one timeline
• Daily light exposure, light avoidance, bedtime, and wake-time recommendations
• Shows today's actions and overall adjustment progress
• Optional local reminders at scheduled times
• 12-hour and 24-hour time formats, light and dark appearance
• Available in English and Korean
• No account required; travel data stays on your device

Whether you are preparing for a business trip, a long-haul flight, or an international vacation, PhaseShift helps you start moving your sleep schedule toward local time.

PhaseShift does not measure body temperature or your circadian rhythm. Its schedule is an estimate based on general circadian adjustment rates and is not medical diagnosis or treatment advice.


## Version history (last 4 releases)

### 0.1.3 — 2026-10-01

Improved the travel timeline and app stability.

### 0.1.2 — 2026-09-10

타임라인 화면의 하단 영역 표시 방식을 정리하고 안정성을 개선했습니다.

### 0.1.1 — 2026-09-09

광고 서비스를 개선하고 안정성을 높였습니다.

### 0.1.0 — 2026-08-27

No release notes.

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## More apps by DAEHONG MIN

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All apps by DAEHONG MIN: https://appshunter.io/developer/6787942588

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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 2026-10-04.*