# Congres OEC vs Instal

The clearest difference is update cadence: Instal at every 5 weeks against Congres OEC's every 8 months. 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.

Congres OEC ships an update every 8 months, Instal every 5 weeks. The most recent releases landed on September 29, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Congres OEC | Instal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 weeks** |
| Size | 45 MB | 125 MB |
| Requires iOS | 15.5 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CONSEIL NATIONAL DE L ORDRE DES EXPERTS-COMPTABLES](https://appshunter.io/developer/888288661) | [Axtech](https://appshunter.io/developer/1725028256) |

## What reviewers say

### Congres OEC

[App page](https://appshunter.io/ios/app/congres-oec/id1633211592)

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

**In-app purchases:** none


### Instal

[App page](https://appshunter.io/ios/app/instal/id6504595921)

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

**In-app purchases:** none


## Frequently asked questions

### Is Congres OEC free?

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

### Is Instal free?

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

### Do Congres OEC or Instal have ads?

Neither Congres OEC nor Instal shows ads.

### Which is updated more often, Congres OEC or Instal?

Congres OEC ships an update every 8 months, and Instal every 5 weeks. Most recently, Congres OEC was updated on September 29, 2026 and Instal on September 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*