Looks great, but there are a couple things that I think they could work on:
> $99.99
This is in-line with, or slightly above, other players in the market (e.g. TI, Casio). I'd love to see someone challenge them in this space with something that's like $25. I can get a cheap $10 scientific calculator that does 60% of the same things for $10, so it really seems like there is a spot here for a lower price point. Especially since the hardware is so "old".
> 20+ hours of use on a single charge
A couple hundred hours would be nice. The benefit of a normal calculator is that it works without charging really being a thing that most people have to worry about.
If they're going for quality, it's hard for a small operation to beat the larger players on price. Presumably as they become more well known, they can go for higher volume shipments and benefit more from economy of scale.
I'd agree a good old-fashioned set of AAA batteries like my old TI would've been a better choice though, everyone's been pushing rechargeable batteries, but beyond the need for recharging regularly, they degrade over time and are often a pain to replace.
> A couple hundred hours would be nice. The benefit of a normal calculator is that it works without charging really being a thing that most people have to worry about.
This is almost certainly due to using what looks like either a transmissive LCD or an OLED display, which require a lot of power.
How would an E-ink display work for a calculator? I haven't used them for more than about 20 minutes in my life, but as long as there isn't a lot of lag while typing, it seems line it'd be a good choice.
Much of the time a calculator is glanced at while doing math on paper or sitting idle while waiting for the next input. A 0-energy display would be ideal for this. It'd be interesting to see a breakdown of energy and energy consumption by part on a calculator.
> $99.99
This is in-line with, or slightly above, other players in the market (e.g. TI, Casio). I'd love to see someone challenge them in this space with something that's like $25. I can get a cheap $10 scientific calculator that does 60% of the same things for $10, so it really seems like there is a spot here for a lower price point. Especially since the hardware is so "old".
> 20+ hours of use on a single charge
A couple hundred hours would be nice. The benefit of a normal calculator is that it works without charging really being a thing that most people have to worry about.