“My general bias in the mobile space is towards slimmer products and being okay having multiple products that serve adjacent use cases. Having a product that has eight different features on a smartphone app — it's very hard to get users to understand all of those features and effectively switch between them.”

Slim products on mobile beat feature-rich ones — two apps with three features each outperforms one app with eight

Falzon applies a lean-product principle rooted in mobile UX constraints: small screens, limited attention, and one-tap navigation make feature-dense apps cognitively costly. Mosaic consistently favored spinning out adjacent functionality into separate apps rather than cramming it into existing ones. This enabled better user segmentation — different personas could self-select the right product — and better monetization through separate subscriptions. The counter-intuitive outcome: more apps, each doing fewer things well, generated more total revenue and better retention.