# Indusenz Invenio vs Contacts Prefix Fixer

The clearest difference is update cadence: Indusenz Invenio at every 5 weeks against Contacts Prefix Fixer's every 14 months. Contacts Prefix Fixer's advantage is iOS requirement (12.0 vs 15.6). 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.

Indusenz Invenio ships an update every 5 weeks, Contacts Prefix Fixer every 14 months. The most recent releases landed on October 16, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Indusenz Invenio | Contacts Prefix Fixer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/contacts-prefix-fixer/id1635039737/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 14 months |
| Monetization | — | Free |
| Size | 63 MB | 29 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Indusenz AS](https://appshunter.io/developer/1594542595) | [Cuong Luu Hung](https://appshunter.io/developer/1634793639) |

## What reviewers say

### Indusenz Invenio

[App page](https://appshunter.io/ios/app/indusenz-invenio/id1603823762)

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

**In-app purchases:** none


### Contacts Prefix Fixer

[App page](https://appshunter.io/ios/app/contacts-prefix-fixer/id1635039737)

Easily edit the prefix number for your contacts. Add country codes or other prefixes to all your phone numbers in one go. This utility simplifies managing international or specific dialing formats for your contacts.

**Highlights:** Edit contact phone number prefixes, Add country codes, Batch prefix modification, Easy to use interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Indusenz Invenio free?

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

### Is Contacts Prefix Fixer free?

Contacts Prefix Fixer is free to download, with no in-app purchases.

### Do Indusenz Invenio or Contacts Prefix Fixer have ads?

Neither Indusenz Invenio nor Contacts Prefix Fixer shows ads.

### Which is updated more often, Indusenz Invenio or Contacts Prefix Fixer?

Indusenz Invenio ships an update every 5 weeks, and Contacts Prefix Fixer every 14 months. Most recently, Indusenz Invenio was updated on October 16, 2026 and Contacts Prefix Fixer on October 21, 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.*