Sigma Theory

Sigma Theory — Plug In Digital is currently holding a steady position across several smaller markets on the App Store, with its peak rank of #33 reached on August 2, 2026, on the Libya Top Paid chart, where it remains today. The app's strongest showing is concentrated in North African countries — Libya (#33 Top Paid, #45 Top Paid, and #81 Top Grossing), Mauritania (#35 Top Paid), and Chad (#88 Top Paid) — all with no recent movement. Ukraine's Top Paid position at #80 marks the only notable shift, having dropped 16 places over the last 30 days. Overall, the app's 30-day average of #33 mirrors its best rank, indicating a largely flat trajectory with a mild decline in Ukraine as the sole exception.