1 November 2021

Mobile Streams plc

("MOS" or "the Company")

LiveScores Argentina months ahead of target. Over 6,000 downloads in first month

Mobile Streams plc, the AIM quoted mobile content and data intelligence company, is delighted to announce that its LiveScores service in Argentina has achieved more than 6,000 downloads in its first month against an internal target of 3,000 by the end of December. The service, which only launched at the start of October, achieved these numbers significantly faster than anticipated and the Company believes this demonstrates much stronger than predicted demand for the service.

Income is generated for MOS, not through downloads, but through a mixture of affiliate revenue share with Quanta and subscription payments via the current MOS billing contract with Movistar. It is estimated at the vast majority of revenue generated from the Argentina service will be from affiliate revenue share. Affiliate revenue occurs when a lead generated from the LiveScores service is sold to another organisation which will then market their service or product to the lead. All affiliate revenue share generated will be paid into the MOS UK account and therefore will not incur any currency related risks sometimes associated with the Argentinian market. Additional revenue from telco subscriptions may also be generated and will be paid into the MOS Argentina account. As with the Company's successful launch in Mexico, this service will utilise QMG content and the Streams delivery platform.

The Company is also delighted to announce that, as stated in its RNS dated 18 October 2021, its LiveScores service will be going live in Brazil from today, 1 November. The service will be marketed under the name Placar365 and will be live on the website https://placar365.com , the Google Playstore and then Apple App Store. This launch, in addition to our already live Argentinian and Mexican services, show the Company's continuing commitment to develop the business and our international services. It also represents the next step in the Company's revenue generation strategy. We will update the market on Brazil take up when appropriate.

The Company is in advanced discussions regarding launching this service in additional markets. A further announcement on this is expected to be made shortly.

Nigel Burton, Non-Executive Director, said:

"I'm delighted we were able to generate over 6,000 downloads so quickly in Argentina. As with our success in Mexico, the whole team has worked extremely well not only to deliver a successful launch but also faster than expected take up. As we continue to roll out our growth strategy in Brazil and elsewhere I look forward to the Company delivering further revenue opportunities."

This announcement contains inside information for the purposes of Article 7 of the Market Abuse Regulation (EU) No. 596/2014, as it forms part of UK Domestic Law by virtue of the European Union (Withdrawal) Act 2018. Upon the publication of this announcement, this inside information is now considered to be in the public domain.

About Streams Data

The Streams Data business provides data insight, intelligence and visualisation services and marketing optimisation tools. The enterprise level bespoke service achieved first revenues in June 2020, and the Streams SaaS ("Software as a Service") self-service platform generated initial customer revenues in October 2020. Enterprise clients include The Economist and Quanta Media Group.

For further information, please contact:

Mobile Streams plc

Nigel Burton, Non-Executive Director

+44 77 8523 4447

www.mobilestreams.com

Beaumont Cornish (Nominated Adviser)

James Biddle and Roland Cornish

+44 (0) 20 7628 3396

Peterhouse Capital Limited (Broker)

Lucy Williams, Duncan Vasey and Eran Zucker

+44 (0) 20 7469 0930