# Time Zone Difference Planner vs Shadowline

The clearest difference is update cadence: Shadowline at every 2 days against Time Zone Difference Planner's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Time Zone Difference Planner sells 3 in-app purchases, starting at $2.99 per 7 days and Shadowline sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Time Zone Difference Planner ships an update every 4 months, Shadowline every 2 days. The most recent releases landed on October 26, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Time Zone Difference Planner | Shadowline |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/shadowline-world-time-zones/id6776769068/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 5 MB | 40 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) | [KKB CoRi Technologies Private Limited](https://appshunter.io/developer/1887008624) |

## What reviewers say

### Time Zone Difference Planner

[App page](https://appshunter.io/ios/app/time-zone-difference-planner/id6772262657)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| World Clock Weekly | $2.99 | per 7 days |
| Remote Work Yearly | $14.99 | per year |
| UTC Converter Lifetime | $29.99 | one-time |


### Shadowline

[App page](https://appshunter.io/ios/app/shadowline-world-time-zones/id6776769068)

Visualize time zones with elegant clock faces or a single 24-hour dial. Plan meetings, manage jet lag with science-based advice, and view a live day & night map. Widgets offer at-a-glance city times.

**Highlights:** World clocks with customizable themes, 24-hour dial for at-a-glance time comparison, Meeting planner with calendar integration, Jet lag adjustment plans, Live day & night map with moon phase, Home and Lock Screen widgets

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shadowline Pro | $2.49 | one-time |


## Frequently asked questions

### Is Time Zone Difference Planner free?

Time Zone Difference Planner is free to download, with in-app purchases available.

### Is Shadowline free?

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

### Do Time Zone Difference Planner or Shadowline have ads?

Neither Time Zone Difference Planner nor Shadowline shows ads.

### Which is updated more often, Time Zone Difference Planner or Shadowline?

Time Zone Difference Planner ships an update every 4 months, and Shadowline every 2 days. Most recently, Time Zone Difference Planner was updated on October 26, 2026 and Shadowline on October 6, 2026.

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