LearnMentalModels vs 99cards.dev
Both are other tools. LearnMentalModels enters at $139, 99cards.dev at $3,500 — a 96% gap at the door. Prices are read from each tool's own pricing page; revenue appears only where the founder published it.
| LearnMentalModels | 99cards.dev | |
|---|---|---|
| Entry, monthly | $139 | $3,500 |
| Highest tier | $139 | $4,200 |
| Monthly tiers on record | 1 | 2 |
| Published revenue | not published | not published |
| Revenue reported | — | — |
| Price changes on record | 0 | 0 |
What the two numbers say
At the entry tier the cheaper option is LearnMentalModels at $139, which is $3,361 a month less than 99cards.dev — 96% below. That is the whole of the price difference; anything beyond it is about what each tool does, which this page does not measure.
Prices and revenue are as captured, not live. A tool that raised its price last week and a tool that has not moved in a year look the same in a table — the dated changes are on each tool's page.