# Flow UC vs Fasttelphone

The clearest difference is update cadence: Flow UC at every 3 weeks against Fasttelphone's every 4 months. Fasttelphone's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price, ads and in-app purchases there is nothing between them.

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

Flow UC ships an update every 3 weeks, Fasttelphone every 4 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | Flow UC | Fasttelphone |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free | — |
| Size | 151 MB | 159 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Telavox AB](https://appshunter.io/developer/302899042) | [Fasttel](https://appshunter.io/developer/514872805) |

## What reviewers say

### Flow UC

[App page](https://appshunter.io/ios/app/flow-uc/id1504435678)

This app enhances workplace communication by showing colleague availability in real-time and enabling calls over data connections. It allows seamless call toggling between mobile and fixed extensions, and provides PBX services like call transfers and voicemail access. Users can also report their GPS position and manage mobile data usage.

**Highlights:** Real-time colleague presence, In-app soft phone for data calls, Call toggling between mobile and fixed, Call transfer to internal/external numbers, Shared voicemail access, GPS position reporting, Mobile data usage management

**Features:** Siri integration, Vision Pro support

**In-app purchases:** none


### Fasttelphone

[App page](https://appshunter.io/ios/app/fasttelphone/id1582782567)

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

**In-app purchases:** none


## Frequently asked questions

### Is Flow UC free?

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

### Is Fasttelphone free?

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

### Do Flow UC or Fasttelphone have ads?

Neither Flow UC nor Fasttelphone shows ads.

### Which is updated more often, Flow UC or Fasttelphone?

Flow UC ships an update every 3 weeks, and Fasttelphone every 4 months. Most recently, Flow UC was updated on October 25, 2026 and Fasttelphone on October 25, 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.*