ShopBack - ShopBack let you earn EXTRA cashback, in addition to whatever promotion or credit card cashback, when you shop at 500+ websites. Sign up with my link to get FREE $10!
Book Depository - Buy (physical) books without minimum order and shipping fee.
Tiger Brokers - Buy stocks, good support for Singapore and Hong Kong market, and with FREE shares upon sign up!
InteractiveBrokers - Buy stocks for US, and globally! They are the cheapest for US. Use my link to earn up to $1,000.
TransferWise - Send money with the best exchange rate (around 1% loss only). I use it to remit between USD and SGD and it works perfectly. Sign up with my link to have your first transfer FREE ($0 fee, 0% loss)!
There are many e-wallets and payment app, and they give free money just for signing up!
Razer8SG Radio - My radio app with all the Singapore radio stations! I used it every morning and evening on the train and bus.
VLC - Watch offline videos support various formats including mkv. I usually download videos from youtube on a computer (see youtube-dl below), then transfer it to the app on the phone.
Medium - Read articles
I have omitted apps that were already mentioned in other sections such as ShopBack, Uber, etc.
youtube-dl - A CLI tool to download video. Watch it offline, and skip the ads on YouTube!
Coinbase - Trade crypto. Get $10 worth of bitcoin.
Brave browser - A web browser with ad blocker built in (YouTube without ads!), and you get rewarded with crypto by using it.
Namecheap - DNS registration at $9.98/year for a .com
Digital Ocean - Virtual Private Servers from $5/mth
Note: All links, if possible, are affiliate links. Affiliate links are good for BOTH you and me. You get extra bonus from signing up with my link, and I get a reward too!