# Città di Agrigento vs Stacky

The clearest difference is in-app purchases: Città di Agrigento at none against Stacky's 3. Stacky's advantage is update cadence (every 4 days vs every 8 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Stacky sells 3 in-app purchases, starting at $8.99 per month. Città di Agrigento asks for nothing beyond the download.

Città di Agrigento ships an update every 8 months, Stacky every 4 days. The most recent releases landed on October 2, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Città di Agrigento | Stacky |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 days** |
| Size | 62 MB | 47 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Comune di Agrigento](https://appshunter.io/developer/1638587502) | [Stacky Technologies](https://appshunter.io/developer/6778837622) |

## What reviewers say

### Città di Agrigento

[App page](https://appshunter.io/ios/app/citta-di-agrigento/id1638587500)

**Features:** macOS Compatibility

**In-app purchases:** none


### Stacky

[App page](https://appshunter.io/ios/app/stacky-flight-tracker-and-trips/id6778837620)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stacky Premium | $8.99 | per month |
| Stacky Premium | $69.99 | per year |
| Trip Pass | $6.99 | one-time |


## Frequently asked questions

### Is Città di Agrigento free?

Città di Agrigento is free to download, with no in-app purchases.

### Is Stacky free?

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

### Do Città di Agrigento or Stacky have ads?

Neither Città di Agrigento nor Stacky shows ads.

### Which is updated more often, Città di Agrigento or Stacky?

Città di Agrigento ships an update every 8 months, and Stacky every 4 days. Most recently, Città di Agrigento was updated on October 2, 2026 and Stacky on September 28, 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.*