# Prex

> Source: https://docs.barcoder.ai/docs/standards/prex
> research date 2026-05-29 · extracted at 2026-10-06
> Publisher: Barcoder — encyclopedia of QR, barcode and payment-code standards

Specifications:
- [Prex Argentina — official](https://www.prex.com/ar/)

## Overview

**Prex** is **a multi-country LATAM fintech** offering **free digital accounts linked to international Mastercard prepaid cards, managed through a mobile app** <sup>[1][1], [3][3], [Argentina report](https://docs.barcoder.ai/docs/payments/AR)</sup>. Founded **2015 in Uruguay**, Prex launched in **Argentina (2019)** and **Peru (2021)** — expanding across the Southern Cone. By **November 2023, Prex had 2.2 million users across its three countries**; subsequent growth has brought **regional total to 3+ million users**. The structural distinction: **Prex is one of the few LATAM fintechs operating across multiple national markets simultaneously** — Uruguay + Argentina + Peru — rather than focusing on a single home country.

The platform's value proposition: **Mastercard-prepaid-card-linked digital account + mobile app + free** — providing international payment-network reach without requiring traditional bank accounts. Recent partnership: **Prex + Allaria launched a high-yield savings account in Argentina** — expanding from pure prepaid-card into yield-bearing financial product. The structural significance: Prex demonstrates **Uruguayan fintech regional expansion** — small-economy origin (Uruguay) scaling to larger Southern Cone neighbours (Argentina + Peru). Within Argentina, Prex competes with **Mercado Pago, Ualá, Naranja X, MODO**, plus local bank wallets — illustrating Argentine fintech's intense competition.

## History

**Background — Southern Cone fintech context** <sup>[Argentina report](https://docs.barcoder.ai/docs/payments/AR)</sup>:
- Uruguay + Argentina + Peru: distinct regulatory + economic contexts.
- Strong fintech adoption across region.
- Mercado Pago + Ualá + Naranja X major Argentine competitors.

**2015 — Prex founded in Uruguay** <sup>[1][1]</sup>:
- Initial home market.

**2019 — Prex launches in Argentina** <sup>[1][1]</sup>:
- Regional expansion.

**2021 — Prex launches in Peru** <sup>[1][1]</sup>:
- Continued regional expansion.

**November 2023 — 2.2M users across 3 countries** <sup>[3][3]</sup>:
- Substantial multi-country scale.

**Recent — 3M+ users regional** <sup>[1][1]</sup>:
- Continued growth.

**Prex + Allaria high-yield savings partnership (Argentina)** [[latam-list]]:
- Product-portfolio expansion.

## Technical specification

Prex is **Uruguayan fintech operating in Uruguay + Argentina + Peru** <sup>[1][1], [3][3]</sup>:

| Layer | Description |
|---|---|
| **Operator** | **Prex** (Uruguayan fintech) |
| **Founded** | **2015 in Uruguay** |
| **Markets** | **Uruguay (2015) + Argentina (2019) + Peru (2021)** |
| **Core product** | Free digital account + Mastercard prepaid card + mobile app |
| **Currencies** | UYU + ARS + PEN |
| **Users (regional)** | **3+ million** |
| **Users (Nov 2023)** | 2.2M across 3 countries |
| **Recent expansion** | Allaria-partnered high-yield savings (Argentina) |

**Mastercard prepaid card integration** <sup>[1][1]</sup>:
- International acceptance.
- No-traditional-bank-account-required.

## Use cases

**Digital account + Mastercard prepaid card** <sup>[1][1]</sup>: Cardinal use.

**International payment** <sup>[1][1]</sup>: Via Mastercard global network.

**P2P transfers** <sup>[1][1]</sup>: Between Prex users.

**Bill payment + utility** <sup>[1][1]</sup>: Standard mobile-payment features.

**High-yield savings (Argentina via Allaria)** [[latam-list]]: Yield-bearing product expansion.

**Cross-country regional reach** <sup>[1][1]</sup>: Uruguay + Argentina + Peru.

## Implementations & ecosystem

**Operator**: **Prex**.

**Markets**: Uruguay, Argentina, Peru.

**Card-network partner**: **Mastercard**.

**Argentine partner**: **Allaria** (high-yield savings).

**Major LATAM competitors**: Mercado Pago, Ualá, Naranja X, **[MODO](https://docs.barcoder.ai/docs/standards/modo)** (AR), Nubank, Yape (PE), etc.

## Fun facts

- **Uruguayan origin → regional scale**: Small-economy fintech scaling to larger Southern Cone neighbours.
- **3 countries / 3M+ users**: Multi-country LATAM fintech.
- **2015 founding → 2.2M by 2023**: 8-year scale-up arc.
- **Mastercard prepaid card-linked**: International acceptance from day 1.
- **No-traditional-bank-account-required**: Financial-inclusion adjacent.
- **Allaria partnership**: Recent move into yield-bearing products.
- **Free model**: Cost-friendly positioning.

## Comparison

| Feature | Prex (UY+AR+PE) | Ualá (AR+MX+CO) | Mercado Pago (LATAM) | Mach/MACHBANK (CL) | Nubank (BR+) |
|---|---|---|---|---|---|
| Origin country | **Uruguay** | Argentina | Argentina | Chile | Brazil |
| Countries operated | 3 | 3 | 10+ | 1 (CL) | 4+ |
| Users (recent) | **3M+** | 7M+ | 56M MAU | 4.2M+ | 90M+ |
| Core product | Prepaid card + digital account | Multi-product fintech bank | Super-app + payments | Digital bank | Digital bank |
| Card partner | Mastercard | Mastercard | Various | Visa | Mastercard |

## Status

**Active, regional growth** <sup>[1][1], [3][3]</sup>:
- **Prex Uruguayan fintech**.
- **Operating in Uruguay + Argentina + Peru**.
- **3M+ users** (regional).
- **Allaria partnership for AR high-yield savings**.

## Sources

[1]: https://www.prex.com/ar/ "Prex Argentina — official"
[2]: https://app.dealroom.co/companies/prexcard "Prex — Dealroom"
[3]: https://www.crunchbase.com/organization/entre-econstar-s-a-prexcard "Prex — Crunchbase"
[latam-list]: https://latamlist.com/prex-partners-with-allaria-to-launch-a-high-yield-savings-account-in-argentina/ "Prex × Allaria savings"

- [1] [Prex Argentina][1]
- [2] [Prex — Dealroom][2]
- [3] [Prex — Crunchbase][3]
- <sup>[Argentina report](https://docs.barcoder.ai/docs/payments/AR)</sup> `reports/countries/AR-argentina.md`

## Deployments

Found in the following country reports (grep across `reports/countries/`):

- **UY** — [UY-uruguay.md](https://docs.barcoder.ai/docs/payments/UY)