# Clavis vs Ish Clock

The clearest difference is in-app purchases: Ish Clock at none against Clavis's 5. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Clavis sells 5 in-app purchases, starting at $4.99 per month. Ish Clock asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 days. Both last shipped on November 5, 2026.

## The numbers

| Metric | Clavis | Ish Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 days | Every 4 days |
| Size | 43 MB | 1 MB |
| Requires iOS | 17.2 | **17.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Pedro Henrique Oliveira Sousa](https://appshunter.io/developer/1875393541) | [ROGER DUBAR](https://appshunter.io/developer/1896709314) |

## What reviewers say

### Clavis

[App page](https://appshunter.io/ios/app/clavis-planetary-clock/id6758866461)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Clavis AI Monthly | $4.99 | per month |
| Clavis AI Yearly | $29.99 | per year |
| Tip | $1.99 | one-time |
| Support + 30 days of AI | $5.99 | one-time |
| Support + 90 days of AI | $14.99 | one-time |


### Ish Clock

[App page](https://appshunter.io/ios/app/ish-clock/id6770034104)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Clavis free?

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

### Is Ish Clock free?

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

### Do Clavis or Ish Clock have ads?

Neither Clavis nor Ish Clock shows ads.

### Which is updated more often, Clavis or Ish Clock?

Clavis ships an update every 4 days, and Ish Clock every 4 days. Most recently, Clavis was updated on November 5, 2026 and Ish Clock on November 5, 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.*