# WhenToGo - Leave on Time — Traffic-aware departure alerts

> Traffic-aware departure alerts (iPhone/iPad app by Jeongwoo Cho.)

- Source: https://appshunter.io/ios/app/whentogo-leave-on-time/id6792635733 (this page in markdown: same URL + `.md`)
- Developer: [Jeongwoo Cho](https://appshunter.io/developer/1889255052)
- Category: Navigation
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 27 MB
- Languages: Korean, American English
- Released: 2026-07-26
- Data updated: 2026-11-08

## What is WhenToGo?

"What time should I leave so I'm not late?"

How long will it take if I leave at 9 tomorrow morning? What time do I need to leave to arrive by 10?

Map apps tell you how long it takes if you leave right now. WhenToGo tells you what time to leave.
WhenToGo predicts traffic for a future time window and gives you the expected travel time and a recommended departure time.
Just set when you need to arrive. We work out when to leave and notify you when it's time to go.


■ What time to leave

• Arrival mode — set your arrival time and get the departure time that gets you there.
• Departure mode — check in advance how long a 9 AM trip tomorrow will take.
• Future travel times are predicted using Kakao Mobility route data and traffic data.
• See the expected travel time along with taxi fare and tolls.
• Supports driving and public transit (bus and subway).


■ We tell you first when traffic changes

• Traffic is re-checked several times before you leave.
• If the travel time changes, you get the updated departure time.
• Get a heads-up N minutes before departure and a "Leave now" alert at departure time.
• Traffic change alerts arrive even when the app is closed.


■ Buffer time, recommended for you

• Buffer time is suggested based on distance, rush hour, weather, and more.
• Change it to whatever buffer you prefer.
• Leave with a little extra room for the unexpected.


■ When it's time to go, start navigation

• Open Kakao Map, TMAP, or Naver Map with one tap.
• After arriving, confirm your actual travel time to help improve predictions. (optional)
• Share your departure details with family, friends, and coworkers.


■ Faster for the places you go often

• Save frequent places like home and work.
• See your current location by neighborhood name.
• Search results start with places near you.
• Set up daily or weekly recurring trips.
• Recurring trips can skip public holidays.


■ Simple and clean

• No sign-up required
• No ads
• Artwork backgrounds that change with time and weather
• Korean and English
• Free


■ Great for

• Commuting or going to school at a fixed time every day
• Parents managing school and daycare drop-offs
• Anyone who doesn't want to be late for appointments, meetings, interviews, or doctor visits
• Getting to the airport or train station with time to spare
• Checking tomorrow's or next week's traffic in advance


■ Privacy and notifications

Notification permission is used to alert you about departure times and traffic changes.
Location is used to calculate routes and travel times. The app does not continuously track your movements in the background.
Trip schedules needed for traffic alerts, and trip records you choose to share, may be stored on our servers to provide the service and improve predictions. See the privacy policy for details.

※ Expected travel times may differ from actual travel times or from other map apps depending on traffic conditions and prediction methods.

## Is WhenToGo safe?

Not enough ratings yet to assess WhenToGo.

## Is WhenToGo legit?

WhenToGo - Leave on Time has limited verification signals. The AppsHunter Legitimacy Score for WhenToGo is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.2.2 — 2026-11-04

· Tap a schedule in My Schedules to see your departure time recalculated with current traffic
· Shows when an alarm is actively checking traffic (from 2 hours before departure)
· A quick tip on sharing your departure time with people you're meeting

### 1.2.1 — 2026-11-01

· Stability improvements

### 1.2.0 — 2026-10-30

· A quick guide to the two ways to plan: by arrival or by departure
· Alarms to work or saved places now default to weekdays (Mon–Fri)
· Clearer notifications: the time to leave comes first, and long place names no longer get cut off
· Tap the departure alert to start navigation right away

### 1.1.9 — 2026-10-29

• Background paintings no longer switch while you're viewing, except when rain or snow starts

### 1.1.8 — 2026-10-29

• Added a quick guide on the result screen showing what the alarm does for you
   • With an alarm, WhenToGo watches traffic from 2 hours before you leave and tells you early if you need to leave sooner

## Apps similar to WhenToGo

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [카카오내비 - 주차,발렛,전기차충전,세차,보험,중고차](https://appshunter.io/ios/app/id417698849) | 2.5 (119) | Free | Navigation |
| [NAVER Maps, Navigation](https://appshunter.io/ios/app/naver-maps-navigation/id311867728) | 4.0 (2,998) | Free | Navigation |

## More apps by Jeongwoo Cho

- [Master Valley](https://appshunter.io/ios/app/master-valley/id6761381729)

All apps by Jeongwoo Cho: https://appshunter.io/developer/1889255052

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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 2026-11-08.*