# Flow UC vs Zpark

The clearest difference is iOS requirement: Zpark at 16.6 against Flow UC's 18.0. On price, update cadence, 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, Zpark monthly. The most recent releases landed on October 14, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Flow UC | Zpark |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free | — |
| Size | 151 MB | 70 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Telavox AB](https://appshunter.io/developer/302899042) | [Grepit AB](https://appshunter.io/developer/1520166439) |

## 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


### Zpark

[App page](https://appshunter.io/ios/app/zpark/id1520166437)

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Flow UC free?

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

### Is Zpark free?

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

### Do Flow UC or Zpark have ads?

Neither Flow UC nor Zpark shows ads.

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

Flow UC ships an update every 3 weeks, and Zpark monthly. Most recently, Flow UC was updated on October 14, 2026 and Zpark on October 1, 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.*