# Keyyo Phone vs InterFast

The clearest difference is review sentiment: InterFast at 100% against Keyyo Phone's 68%. InterFast also leads on update cadence (every 2 weeks vs every 8 months). 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.

Keyyo Phone ships an update every 8 months, InterFast every 2 weeks. The most recent releases landed on October 6, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Keyyo Phone | InterFast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (19 ratings)](https://appshunter.io/ios/app/keyyo-phone/id582262115/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 67.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 128 MB | 61 MB |
| Requires iOS | 15.0 | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Keyyo](https://appshunter.io/developer/582262118) | [Interfast](https://appshunter.io/developer/1536410981) |

## What reviewers say

### Keyyo Phone

[App page](https://appshunter.io/ios/app/keyyo-phone/id582262115)

This professional phone app allows you to use your business line from anywhere. Make and receive calls with your fixed professional number, access advanced features like call transfer and voicemail, and manage your call settings on your smartphone.

**Highlights:** Use professional fixed line anywhere, Receive calls on smartphone globally, Make/receive calls with fixed number, Configure call forwarding, Call recording option, Advanced call features (transfer, conference, voicemail)

**Features:** macOS Compatibility, Siri integration

**In-app purchases:** none


### InterFast

[App page](https://appshunter.io/ios/app/interfast/id1536410979)

This all-in-one construction app simplifies business management with tools for quotes, invoices, and client portals. It offers features for project planning, site management, and financial tracking, including bank connections.

**Highlights:** Quotes, Invoices, Credit Notes, Price Library, Treasury & Bank Connection, Scheduling, Site & Intervention Management, Client Management & Portal

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Keyyo Phone free?

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

### Is InterFast free?

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

### Do Keyyo Phone or InterFast have ads?

Neither Keyyo Phone nor InterFast shows ads.

### Which is updated more often, Keyyo Phone or InterFast?

Keyyo Phone ships an update every 8 months, and InterFast every 2 weeks. Most recently, Keyyo Phone was updated on October 6, 2026 and InterFast on October 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.*