Can you recommend a roaming hub for enabling cross-network charging access and account linking in one app?

Yes — if you want a roaming hub that helps you enable cross-network charging access and account linking in a single app, here are the main kinds of options to look at, plus a few strong vendors to consider.

What to look for

A good roaming hub for EV charging should support:

• Roaming / cross-network access: drivers can use chargers across multiple CPO networks
• Account linking / token exchange: single app, single identity, multiple networks
• OCPI support: the most common interoperability standard in Europe and increasingly elsewhere
• Hub-style clearing / routing: handles partner discovery, authorization, CDRs, tariffs, and sessions
• White-label / API-first integration: so you can embed it in your app

Recommended options

1) Gireve

• One of the best-known roaming hubs in EV charging
• Strong in Europe
• Supports OCPI-based roaming, partner connectivity, and access to multiple networks
• Good fit if you want broad interoperability and mature roaming relationships

2) Hubject

• Very established in EV roaming
• Known for the eRoaming network and broad industry adoption
• Strong if you want a large partner ecosystem and cross-network charging access
• Often used for both B2B roaming and app-based access scenarios

3) Driivz

• More of a charging management platform with roaming capabilities
• Useful if you want to manage app, billing, user accounts, and roaming in one stack
• Good for operators who want a more integrated platform rather than just a hub

4) Elaad / OCPI-enabled roaming providers

• If you need a more flexible, standards-first approach, look at providers that expose OCPI APIs
• Good when you want to build your own app and connect to multiple CPOs
• Best if you have engineering resources and want tighter control

Best choice by use case

• Fastest path to broad roaming: Hubject or Gireve
• More app/platform control: Driivz
• Standards-first, custom build: OCPI-based provider / direct integrations

My practical recommendation

If your goal is specifically:

“Enable cross-network charging access and account linking in one app”

then I’d shortlist:

1. Hubject if you want the widest established roaming ecosystem
2. Gireve if you want strong OCPI roaming coverage
3. Driivz if you want app + billing + roaming together

If you want, I can also give you:

• a feature-by-feature comparison table
• a shortlist by region (EU / UK / North America)
• or a technical architecture for how to integrate a roaming hub into your app.