# Invock vs Tref.

The clearest difference is update cadence: Invock at every 5 weeks against Tref.'s every 4 months. Invock also leads on iOS requirement (12.0 vs 15.1). 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.

Invock ships an update every 5 weeks, Tref. every 4 months. The most recent releases landed on September 29, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Invock | Tref. |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 4 months |
| Monetization | Free | — |
| Size | 33 MB | 33 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [INVOCK DIGITAL PRIVATE LIMITED](https://appshunter.io/developer/1355643145) | [SUN GLOBELINK PRIVATE LIMITED](https://appshunter.io/developer/1827233176) |

## What reviewers say

### Invock

[App page](https://appshunter.io/ios/app/invock/id1355643146)

Transform your offline store into a digital shop that automatically integrates with WhatsApp. This app automates sales and marketing growth for small and medium-sized enterprises by providing digital presence, automated invoicing, and store management tools.

**Highlights:** Digital store creation, WhatsApp integration, Automated GST invoicing, Store manager, Sales and purchase tracking, Party statement sharing

**Features:** macOS Compatibility

**In-app purchases:** none


### Tref.

[App page](https://appshunter.io/ios/app/tref/id6748743709)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Invock free?

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

### Is Tref. free?

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

### Do Invock or Tref. have ads?

Neither Invock nor Tref. shows ads.

### Which is updated more often, Invock or Tref.?

Invock ships an update every 5 weeks, and Tref. every 4 months. Most recently, Invock was updated on September 29, 2026 and Tref. on October 12, 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.*