# Welyb vs InterFast

The clearest difference is review sentiment: InterFast at 100% against Welyb's 67%. InterFast also leads on update cadence (every 2 weeks vs every 6 weeks). 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.

Welyb ships an update every 6 weeks, InterFast every 2 weeks. The most recent releases landed on July 21, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Welyb | InterFast |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 36 MB | 61 MB |
| Requires iOS | 16.0 | **15** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Welyb](https://appshunter.io/developer/1369703085) | [Interfast](https://appshunter.io/developer/1536410981) |

## What reviewers say

### Welyb

[App page](https://appshunter.io/ios/app/welyb/id1369703086)

Automate accounting document collection and secure storage. This app simplifies information exchange between accounting firms, businesses, and stakeholders, ensuring no documents are lost and saving time on data gathering.

**Highlights:** Automated accounting document collection, Secure document storage, Simplified information exchange, Invoice scanning, Direct document sending to platform, Real-time synchronization

**Features:** macOS Compatibility, Vision Pro support

**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 Welyb free?

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

### Is InterFast free?

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

### Do Welyb or InterFast have ads?

Neither Welyb nor InterFast shows ads.

### Which is updated more often, Welyb or InterFast?

Welyb ships an update every 6 weeks, and InterFast every 2 weeks. Most recently, Welyb was updated on July 21, 2026 and InterFast on September 16, 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.*