# Pi Weather vs Vesper Sky

The clearest difference is in-app purchases: Pi Weather at none against Vesper Sky's 3. Pi Weather also leads on update cadence (every 2 days vs every 2 months) and iOS requirement (13.0 vs 16.4). On price, ads and device support there is nothing between them.

Both are free to download. Vesper Sky sells 3 in-app purchases, starting at $2.99 per month. Pi Weather asks for nothing beyond the download.

Pi Weather ships an update every 2 days, Vesper Sky every 2 months. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Pi Weather | Vesper Sky |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 months |
| Size | 15 MB | 126 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Barcelona Code School](https://appshunter.io/developer/1414985237) | [iSimplifyMe LLC](https://appshunter.io/developer/1887111241) |

## What reviewers say

### Pi Weather

[App page](https://appshunter.io/ios/app/pi-weather/id6449082497)

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

**In-app purchases:** none


### Vesper Sky

[App page](https://appshunter.io/ios/app/vesper-sky/id6762069223)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vesper | $2.99 | per month |
| Vesper Annual | $24.99 | per year |
| Vesper Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Pi Weather free?

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

### Is Vesper Sky free?

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

### Do Pi Weather or Vesper Sky have ads?

Neither Pi Weather nor Vesper Sky shows ads.

### Which is updated more often, Pi Weather or Vesper Sky?

Pi Weather ships an update every 2 days, and Vesper Sky every 2 months. Most recently, Pi Weather was updated on November 3, 2026 and Vesper Sky on November 9, 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.*