BrewRatio
Coffee brewing ratio and dialing-in calculator for pour-over and espresso.
Investment thesis
BrewRatio has decent traffic but is a commodity calculator with no willingness to pay and high AI substitution. It fails the monetization test.
They do not — the value is trivial and freely available.
Infinite free clones; ChatGPT answers the question directly.
None meaningful.
High risk — any chatbot computes brew ratios instantly.
Build analysis
Estimated 4 hrs to a shippable MVP
Effort breakdown
- Calculator UI2h
- Timer1h
- Content/SEO1h
Suggested stack
Ship in v1
- Ratio input
- Grind guide
- Timer
Deliberately skip
- Accounts
- Bean database
- Community
Competitive landscape
Reject. Traffic without monetization is a trap here.
- Countless free calculatorsFree500K/mo visitsStrength
Ubiquitous and free
WeaknessUndifferentiated
Scorecard
Weighted sub-scores driving the composite
- Monetization evidence25% weight2.0
Proof that customers already pay
- Distribution attractiveness20% weight5.0
How reachable the customers are
- Build simplicity15% weight10.0
Inverse of technical complexity (1/10)
- AI durability15% weight4.0
Resistance to AI displacement (risk 7/10)
- Incumbent weakness10% weight4.0
How beatable the current players are
- Customer value10% weight3.0
Willingness and ability to pay
- Expansion potential5% weight3.0
Room to grow beyond the wedge
Distribution & demand
Primary channel: Organic search
12K/mo
9/100
$0.20
Keyword clusters
- coffee ratio calculator12K · KD 9