# doto clock vs Shadowline

The clearest difference is in-app purchases: doto clock at none against Shadowline's 1. doto clock also leads on iOS requirement (13.5 vs 17.0). Shadowline's advantage is update cadence (every 2 days vs every 13 months). On price, ads and device support there is nothing between them.

Both are free to download. Shadowline sells 1 one-off in-app purchase. doto clock asks for nothing beyond the download.

doto clock ships an update every 13 months, Shadowline every 2 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | doto clock | 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 | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 5 MB | 40 MB |
| Requires iOS | **13.5** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [masayuki morishita](https://appshunter.io/developer/470221486) | [KKB CoRi Technologies Private Limited](https://appshunter.io/developer/1887008624) |

## What reviewers say

### doto clock

[App page](https://appshunter.io/ios/app/doto-clock/id1552829897)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 doto clock free?

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

### Is Shadowline free?

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

### Do doto clock or Shadowline have ads?

Neither doto clock nor Shadowline shows ads.

### Which is updated more often, doto clock or Shadowline?

doto clock ships an update every 13 months, and Shadowline every 2 days. Most recently, doto clock was updated on November 3, 2026 and Shadowline on October 31, 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.*