Apple stopped making folio cases after the iPhone 11, so for my folio-loving mom I turned to Moshi. The Overture Case with Detachable Magnetic Wallet for iPhone 13 Pro retails for S$77, in black or pink.
The Moshi Overture for iPhone 6 Plus is a folio-style wallet case retailing for S$59.90 in three colours, Brushed Titanium, Sahara Beige, and Steel Black, each matching an iPhone. The iPhone 6 version offers the same colours cheaper at S$54.90.
Simple Wallet was a Kickstarter project funded last March, raising US$19,587 against a US$10,000 goal. Its sequel, Simple Wallet 2.0, did even better, pulling in US$80,369. I received mine thanks to @DaryoushFar, the founder and CEO, and the quality excellent.
The OtterBox Commuter Wallet for iPhone 5/5s retails for S$55 in Singapore. It adds noticeable bulk in exchange for solid protection against drops, bumps, and shock, and includes a slider compartment at the back that holds up to three cards.
I backed the Crabby Wallet on Kickstarter in April 2013, and it funded the next month, raising US$308,838 against a US$10,000 goal. I bought two, orange and pink, for US$37 total. They mixed up the order and shipped purple instead.