# congstar vs i

The clearest difference is rating: i at 5.0 against congstar's 4.5. i also leads on review sentiment (100% vs 73%). congstar's advantage is update cadence (fortnightly vs every 3 months) and ratings volume (275 vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

i holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: congstar has 275 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 73% of congstar's written reviews are positive against 100% of i's.

congstar ships an update fortnightly, i every 3 months. The most recent releases landed on September 26, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | congstar | i |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (275 ratings)](https://appshunter.io/ios/app/congstar/id917314686/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/i-kfz/id6742321547/reviews)** |
| Number of ratings | **275** | 2 |
| Positive reviews | 72.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Free | Free |
| Size | 201 MB | 67 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [congstar GmbH](https://appshunter.io/developer/917314685) | [Kraftfahrt-Bundesamt](https://appshunter.io/developer/1797752881) |

## What reviewers say

### congstar

[App page](https://appshunter.io/ios/app/congstar/id917314686)

Easily manage your mobile plan and track usage with this app. View data, SMS, and minutes, recharge prepaid credit, and manage your SIM or eSIM. Control your tariff and options, update personal details, and access bills.

**Highlights:** Track data, SMS, and minutes usage, Manage tariff and options, Recharge prepaid credit, View bills, Manage SIM and eSIM, Update personal data

**In-app purchases:** none


### i

[App page](https://appshunter.io/ios/app/i-kfz/id6742321547)

Manage your vehicle registration documents digitally and securely. View, update, and share your registration certificate from your device, reducing paperwork and providing easy access to important vehicle data.

**Highlights:** Digital vehicle registration document (DFZ), Add DFZ via eID or QR code, Automatic updates and inspection reminders, Share registration documents securely, View vehicle data offline, Delete DFZ and shared versions

**In-app purchases:** none


## Frequently asked questions

### Is congstar free?

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

### Is i free?

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

### Which has better reviews, congstar or i?

i is rated higher. congstar averages 4.5 out of 5 from 275 ratings, while i averages 5.0 from 2 ratings.

### Do congstar or i have ads?

Neither congstar nor i shows ads.

### Which is updated more often, congstar or i?

congstar ships an update fortnightly, and i every 3 months. Most recently, congstar was updated on September 26, 2026 and i on September 29, 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.*