As someone who has spent a good deal of time trying to build ereader software, eventually I decided to try to deal with the devil and build on top of RMSDK.
There is no way to get access to it. I don't mean the licensing cost is prohibitively expensive for an indie dev although I understand that to be the case as well.
There is no one to talk to. The email listed on their website does not respond to anything. Not even so much as a "Thanks for your interest" or a "We will get back to you".
I messaged a former colleague who worked there to try to see what the process is to get access to rmsdk. He said he tried to find internal docs about it and couldn't find anything.
I tried to find people on linkedin who might be associated with rmsdk and ask them and similarly found nothing.
Meanwhile publishers only distribute most of their titles with one of their known drm vendors ie Apple, Amazon, or Adobe. The other two are entirely closed off.
If this isn't anticompetitive trust behavior, I don't know what is.
I used the FBReader app to read a ton, they make their SDK available for other apps to use.
The last time I looked into this, readium lcp drm wasn't something US publishers were comfortable distributing their titles with, although it seems like this may be changing, which is good insofar as readium is at least open source and free to build with.
Hello, I'm building https://merrilin.ai, could I pick your brain about the problems you faced?
Sure thing. I've actually been working on the spoiler-free resource angle as well. I can book a call to talk. Distribution is the killer problem here though.
I thought about building this too! Love that both of you are pursuing it as I haven't had the time to start. Don't give up.
Yay! Registrations to https://merrilin.ai are open and you can enjoy a free account for as long as I can afford to give it (I have no funding lol). The android app is ready for closed testing too, if you have an Android device, mail me at mail [at] stonecharioteer.com and I'll add you to the beta testing. ios is still a pain.
Why don't you do sign in with openrouter oauth, then users can create an account and assign a key to your app, with spending limits. It's trivial, plus if you get a decent amount of users your app will appear on the leader board and that's free marketing for your project.
https://openrouter.ai/docs/guides/overview/auth/oauth
That's a good point, but our harness right now is very fine tuned towards kimi2.6, it's something we want to improve but it's just 2 broke dudes working on it right now.
You don't have to give them a choice in the model, you can set your app to use kimi 2.6 only.
That’s really cool! I’ve been thinking about how LLMs could help me with long running series. I read lots of stuff that’s thousands of pages long with a huge cast of characters and locations. Amazons X-Ray is okay ish but (1) not supported everywhere and (2) amazon.
It would be really fun to have a progress-aware AI that can give me a quick definition of entities like people and places. The other thing that would help is details about fictional mechanics. How exactly does FTL work in this universe? What were all the cultivation stages? I don’t need help with reading comprehension, I need a better way to flip back through everything and surface the key detail that was mentioned one time 500 pages ago.
Also, unfortunately my library lives in Kindle. Help me get it out, at least the DRM free stuff. I also use Royal Road extensively and pay for that. Would be great to have those live serials supported somehow.
You're in luck. I built this especially to target series and you can ask questions across books whether they're in a series or not. I wanted to be able to ask questions of books that aren't even related to each other together.
Royal Road looks cool. Do you know if you can extract them into an epub? I have a user who extensively reads Web Novels and I wrote a blog post about that just today. He converts them to epubs AFAIK and uses them.
https://blog.merrilin.ai/engineering/2026/translation-drift/
Yay! Please do, or email me at mail [at] stonecharioteer.com
That’s really cool! I’ve been thinking about how LLMs could help me with long running series. I read lots of stuff that’s thousands of pages long with a huge cast of characters and locations. Amazons X-Ray is okay ish but (1) not supported everywhere and (2) amazon.
It would be really fun to have a progress-aware AI that can give me a quick definition of entities like people and places. The other thing that would help is details about fictional mechanics. How exactly does FTL work in this universe? What were all the cultivation stages? I don’t need help with reading comprehension, I need a better way to flip back through everything and surface the key detail that was mentioned one time 500 pages ago.
Also, unfortunately my library lives in Kindle. Help me get it out, at least the DRM free stuff. I also use Royal Road extensively and pay for that. Would be great to have those live serials supported somehow.