# WhenToLeave vs CurbSync

The clearest difference is in-app purchases: WhenToLeave at none against CurbSync's 2. WhenToLeave also leads on ads (none vs shown) and ratings volume (16 vs 1). On price, rating, update cadence and device support there is nothing between them.

Both are free to download. CurbSync sells 2 in-app purchases, starting at $2.99 per month. WhenToLeave asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for WhenToLeave against 5.0 for CurbSync. That said, the two scores are not equally well evidenced: WhenToLeave has 16 ratings behind it against 1, so its average is the more settled of the two.

WhenToLeave ships an update monthly, CurbSync every 4 weeks. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | WhenToLeave | CurbSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (16 ratings)](https://appshunter.io/ios/app/whentoleave/id6757136570/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/curbsync/id6761316966/reviews) |
| Number of ratings | **16** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 4 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 9 MB |
| Requires iOS | 17.0 | **16.1** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Jeoffrey Lambujon](https://appshunter.io/developer/1864811733) | [Ethan Carroll](https://appshunter.io/developer/1888840900) |

## What reviewers say

### WhenToLeave

[App page](https://appshunter.io/ios/app/whentoleave/id6757136570)

This app provides a personalized timeline for your airport departure, from leaving home to reaching your gate. It considers traffic, TSA wait times, and your travel preferences to give you peace of mind.

**Highlights:** Personalized departure timeline, Real-time traffic integration, Live TSA wait times for 100 US airports, Support for TSA PreCheck and CLEAR, Handles checked bags and buffer time, Flight number lookup, Shareable timeline via text/email

**Features:** macOS Compatibility

**In-app purchases:** none


### CurbSync

[App page](https://appshunter.io/ios/app/curbsync/id6761316966)

This app provides precise departure times for airport travel, factoring in flight status, live traffic, and your preferred arrival buffer. It offers features for both catching flights and picking up passengers, including real-time updates and terminal routing.

**Highlights:** Real-time flight tracking, Live traffic integration, Customizable airport arrival buffer, Flight delay notifications, Terminal-aware pickup routing, Share ETA functionality

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CurbSync Pro Monthly | $2.99 | per month |
| CurbSync Pro Annual | $29.99 | per year |


## Frequently asked questions

### Is WhenToLeave free?

WhenToLeave is free to download, with no in-app purchases.

### Is CurbSync free?

CurbSync is free to download, with in-app purchases available.

### Which has better reviews, WhenToLeave or CurbSync?

WhenToLeave and CurbSync are both rated 5.0 out of 5 on the App Store, from 16 and 1 ratings respectively.

### Do WhenToLeave or CurbSync have ads?

CurbSync shows ads; WhenToLeave does not.

### Which is updated more often, WhenToLeave or CurbSync?

WhenToLeave ships an update monthly, and CurbSync every 4 weeks. Most recently, WhenToLeave was updated on October 24, 2026 and CurbSync on October 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*