# Overlap vs Lava Clock

The clearest difference is price: Overlap at Free against Lava Clock's $0.99. Overlap also leads on in-app purchases (none vs 1) and device support (4 vs 2). Lava Clock's advantage is update cadence (every 2 days vs every 3 months). On ads there is nothing between them.

Overlap is free to download; Lava Clock costs $0.99 up front. Lava Clock sells 1 one-off in-app purchase. Overlap asks for nothing beyond the download.

Overlap ships an update every 3 months, Lava Clock every 2 days. The most recent releases landed on October 16, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Overlap | Lava Clock |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.8 (849 ratings)](https://appshunter.io/ios/app/overlap-world-clock/id1516950324/reviews)** | — |
| Number of ratings | **849** | — |
| Positive reviews | 67.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 71 MB | 42 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bonobo](https://appshunter.io/developer/666155611) | [Maxime Pontoire](https://appshunter.io/developer/525396222) |

## What reviewers say

### Overlap

[App page](https://appshunter.io/ios/app/overlap-world-clock/id1516950324)

Easily find optimal meeting times across different time zones with a visual graph. Set custom availability for each location and sync with your calendar to avoid scheduling conflicts. Share convenient times directly from the app.

**Highlights:** Visual Overlap Graph for meeting times, Customizable availability hours per time zone, Calendar event integration, Multiple time zone display, Time zone renaming, Lock Screen Standby Mode widget

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 💡 Elegant and intuitive interface
- 🚀 Helpful for coordinating meetings across time zones
- 👍 Useful for tracking time differences globally
- 👍 Simple and easy to use
- 👍 Beautiful and sleek design

**What reviewers complain about**

- 🐛 Widget not working
- 🐛 Timezone data not always accurate
- 🐛 Duplicate timezone entries
- 🐛 App crashes and freezes
- 🔋 High CPU usage on Mac

**Reported bugs**

- Timezone data not updating correctly
- Inability to delete unwanted timezones
- Inconsistent behavior across platforms
- Typing issues on Mac version

**Requested features**

- Add option to reorder timezones
- Implement 24-hour clock display
- Allow customization of colors and backgrounds
- Integrate with calendar for scheduling
- Add weather information for each timezone


### Lava Clock

[App page](https://appshunter.io/ios/app/lava-clock/id6744017027)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Features | $3.99 | one-time |


## Frequently asked questions

### Is Overlap free?

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

### Is Lava Clock free?

Lava Clock costs $0.99, and also offers in-app purchases.

### Do Overlap or Lava Clock have ads?

Neither Overlap nor Lava Clock shows ads.

### Which is updated more often, Overlap or Lava Clock?

Overlap ships an update every 3 months, and Lava Clock every 2 days. Most recently, Overlap was updated on October 16, 2026 and Lava Clock on September 26, 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.*