Head to head
Kast vs Oobit
Both cards run on the same benchmark test, so this compares deducted cost rather than advertised rates.
| Metric | Ka Kast | Oo Oobit |
|---|---|---|
| Overall rank | #7 of 10 | #8 of 10 |
| Gross FX spread | 7.93% | 17.5% |
| Net cost on test | $1.60, expensive on small tickets | $1.74, very expensive on small spends |
| Base cashback | 1.5%, locked for 14 days | 1% (up to 10% on tiers) |
| Custody | Custodial | Self-Custodial |
| Virtual card | $2 | Free |
| Physical card | ~$40 + delivery | Not available, Apple Pay and Google Pay only |
| Spend limit | Unlimited daily purchases | $5,000 daily / $150,000 monthly |
| ATM withdrawals | $3 flat + 2% of the withdrawal | Not supported (virtual only) |
| Setup time | ~10 minutes | ~7 minutes |
| KYC steps | 6 | 5 |
| Score | 6.3/10 | 5.9/10 |
Kast
Kast works if you spend heavily in USD or move large amounts on Solana. For daily small-ticket ZAR spending, coffee, groceries, the flat low-transaction fee makes it one of the most expensive cards you could use in South Africa.
Oobit
Oobit's underlying technology is arguably the best on the market for true Web3 self-custody. But buy a R5,000 plane ticket and you pay a standard 1% fee; buy a R25 coffee and that $0.25 minimum hits you with a 15–20% effective markup every single time.
Who ranks these cards
I'm Tristyn Pawson, founder of ConsistenC.xyz. Over the last five years I've worked on marketing, development and growth across five crypto cards and neobanks, building at least three of them from scratch.
Alongside that I've run in-depth research on 20+ crypto banks to understand what actually makes someone keep a card in their wallet. These rankings reflect that: which problems are tolerable, and which ones are genuine deal breakers.
- Years in market
- 5
- Cards built on
- 5
- Neobanks researched
- 20+