Launch of the Coupon feature on GTT SostApp
Date of the event:
On 10 November 2026 GTT announced the introduction of the Coupon feature within GTT SostApp, the official app used in Turin to pay for blue-zone parking by smartphone. The new feature allows users to transfer part of their credit to other users, turning the digital wallet into a shareable tool similar to a gift card. [1][2]
How it works
From the app's Purchases section, users can convert part of the credit in their wallet into an amount to transfer, either freely set or pre-set. The system generates a unique coupon code, which can be shared by email, text message or WhatsApp. [1][2]
Whoever receives the code must enter it in the top-up procedure for their own wallet on SostApp: the system recognises it in both upper and lower case, with or without hyphens. The code can be forwarded to several people, but is valid for a single use: the credit is assigned to the first user who redeems it through the app. [1][2]
Intended uses
The feature is designed both for private individuals, as a way of gifting parking credit to friends and relatives, and for companies, which will be able to purchase credit for employees, sales agents or maintenance staff working in the area, with ordinary invoicing through their own tax account. [1][2]
Shopkeepers and local businesses will also be able to use the coupons to promote customer loyalty and incentive schemes, offering customers parking credit. [1]
Sources
- Sosta sulle strisce blu, GTT lancia i coupon digitali su SostApp — TorinoOggi, 10 November 2026
- GTT, ecco la nuova opportunità per chi parcheggia sulle strisce blu nell'app SostApp: arriva la funzione per trasferire il credito, come funziona — CronacaQui Torino, 10 November 2026