# FRB FlatrateBooster vs KK Dialer

The clearest difference is update cadence: FRB FlatrateBooster at monthly against KK Dialer's every 52 months. On price, ads, in-app purchases and device support there is nothing between them.

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

FRB FlatrateBooster ships an update monthly, KK Dialer every 52 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | FRB FlatrateBooster | KK Dialer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 52 months |
| Monetization | Free | — |
| Size | 10 MB | 12 MB |
| Requires iOS | **15.5** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [DALASON GmbH](https://appshunter.io/developer/531312222) | [KKGaming, Inc](https://appshunter.io/developer/1571076230) |

## What reviewers say

### FRB FlatrateBooster

[App page](https://appshunter.io/ios/app/frb-flatratebooster/id531312219)

Make ultra-low-cost international calls and save on calls to German mobile numbers. This app routes calls via landline or freephone numbers, offering up to 99% savings. It provides cost control, uses your existing contacts, and ensures superb voice quality without internet calls.

**Highlights:** Ultra low-priced international calls, Savings on German mobile numbers, Routes calls via landline/freephone, Up to 99% savings, 1 EUR free credit for trial, No monthly fees or subscriptions, Superb voice quality

**Features:** macOS Compatibility

**In-app purchases:** none


### KK Dialer

[App page](https://appshunter.io/ios/app/kk-dialer/id1571483823)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FRB FlatrateBooster free?

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

### Is KK Dialer free?

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

### Do FRB FlatrateBooster or KK Dialer have ads?

Neither FRB FlatrateBooster nor KK Dialer shows ads.

### Which is updated more often, FRB FlatrateBooster or KK Dialer?

FRB FlatrateBooster ships an update monthly, and KK Dialer every 52 months. Most recently, FRB FlatrateBooster was updated on November 1, 2026 and KK Dialer on November 3, 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.*