# City Impact App vs Thinline

The clearest difference is in-app purchases: City Impact App at none against Thinline's 3. City Impact App also leads on device support (3 vs 1). Thinline's advantage is update cadence (every 2 days vs every 2 weeks). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Thinline sells 3 in-app purchases, starting at $6.99 per month. City Impact App asks for nothing beyond the download.

City Impact App ships an update every 2 weeks, Thinline every 2 days. The most recent releases landed on September 20, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | City Impact App | Thinline |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Size | 18 MB | 82 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [SyS-F](https://appshunter.io/developer/1806056729) | [Josip Miljak](https://appshunter.io/developer/6805523661) |

## What reviewers say

### City Impact App

[App page](https://appshunter.io/ios/app/city-impact-app/id6744101630)

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

**In-app purchases:** none


### Thinline

[App page](https://appshunter.io/ios/app/thinline-private-sin-tracker/id6805523659)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thinline Monthly | $6.99 | per month |
| Thinline Annual | $29.99 | per year |
| Thinline Founders Offer | $39.99 | one-time |


## Frequently asked questions

### Is City Impact App free?

City Impact App is free to download, with no in-app purchases.

### Is Thinline free?

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

### Do City Impact App or Thinline have ads?

Neither City Impact App nor Thinline shows ads.

### Which is updated more often, City Impact App or Thinline?

City Impact App ships an update every 2 weeks, and Thinline every 2 days. Most recently, City Impact App was updated on September 20, 2026 and Thinline on October 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.*