Pronto is valid on all services operated by MTS and the North County Transit District (NCTD).

Pronto introduced new features for passengers, including an expanded network of retail outlets, and an enhanced website for adding cash value and passes.

[2] Reduced fares are available via a reduced-fare Pronto card for individuals with disabilities, seniors over the age of 65, and Medicare recipients.

[5] In 2018, the San Diego Metropolitan Transit System launched Elevate San Diego, a public participation plan that will address the needs for the growing population, and eventually invoke Assembly Bill 805, and increase the half-cent sales tax within MTS jurisdiction via ballot proposition.

On June 17, the MTS Board adopted a transition plan, and announced the system will launch on September 1, when proposed fare hikes take effect.

Cards issued during the transition period were pre-loaded with a monthly pass, which activated upon launch of the system.

Card readers on buses and at train stations are linked to the central database in real time, which means that passes and stored value purchased online are available immediately.

[11] Voice of San Diego compared the difficulty of using the Pronto card to the slow rollout of its predecessor the Compass Card, and highlighted technical difficulties faced by riders when scanning the QR codes presented by the Pronto mobile app.