Support
Something broken, wrong, or confusing? Mail support@bytexio.com and you will get a reply from a person.
Getting a useful answer quickly
For an app problem, include your device, your iOS version, and the app version from Profile → About — tap it to copy. For a number you think is wrong — on the site or in the app — include the machine, the model and the context length, and say what you measured. Reports of wrong numbers are the most welcome mail I get.
Common questions
A tokens-per-second figure looks wrong
It may well be. Every throughput number on the site and in the app is modelled, not measured — derived from memory bandwidth and compute by one published formula. The weakest part is the per-vendor software-efficiency constant behind prefill, which is an informed guess.
If you have measured something that contradicts it, send the numbers and how you got them. Measurements beat the model, and corrections get published.
A price is out of date
Prices carry the date they were captured, and the site says plainly when they are stale rather than hiding it. Hardware pricing moves constantly; the figure at the retailer when you check out is the one that applies. Spotted one badly out of date? Mail it over.
Why does the app have no buy links?
Deliberately. Amazon's Associates terms do not permit affiliate links inside a native app, so the app carries none at all and links to the matching page on this site instead, where links are labelled as paid. The reasoning is on the disclosure page.
Is my progress backed up or synced?
No. Progress, quiz results and preferences are stored only on your device, and iCloud sync is not enabled. Nothing is sent to a server — which also means deleting the app deletes your progress permanently, and there is no copy to restore. See the privacy policy.
Can I request a machine, model or topic?
Yes, and it is the most useful thing you can send. The site currently tracks17 machines and 9 learning paths. Adding a model to the calculator requires its published config.json, since the attention geometry drives every context figure — a link to that makes it quick.
How do I delete my data?
Delete the app. Everything it stored goes with it. There is nothing held anywhere else, and no account to close.
Is any of this an endorsement, or paid placement?
No company has paid to appear, rank or be recommended. Ranking is computed by the same formula for every machine, including ones that earn nothing. The buy-vs-rent calculator routinely concludes that renting beats buying, which is worse for commissions and is the answer the arithmetic gives.
Contact
One maintainer, so replies take a day or two. Security issues: put SECURITY in the subject and they go to the front of the queue.