Erebos Lab

Comparison · Fast Reader vs. Readlax

Fast Reader vs. Readlax

the RSVP + brain-training app with "minimal" comprehension checks

Readlax pairs an RSVP reader with gamified "brain training" drills and a post-session quiz — the closest competitor to Fast Reader’s comprehension-tracking idea, but reviewers rate its checking "minimal" and its brain-training framing is explicitly flagged as not evidence-backed.

Fast Reader vs. Readlax, feature by feature

FeatureFast ReaderReadlax
Comprehension checkingThree deterministic check types (cloze, sequence, verbatim-recognition) generated from the passage you actually readRated "minimal" in side-by-side reviews
Evidence basisEvery check is scored against the real text you just read, not a stock quiz bankBrain-training framing explicitly flagged by reviewers as not evidence-backed
Reading modesRSVP, guided phrase-pacer, skim/survey with key terms and a costed read plan, listenRSVP plus gamified brain-training drills
Capture & notesBuilt-in notebook — quotes with sentence-snap, tag filtering, Markdown exportNo notebook or capture layer
PlatformsiOS and AndroidiOS and Android
Document importPDF, EPUB, DOCX, HTML, pasted text, on-device camera OCR scanNot a focus — reviewers compare its UI unfavorably to Outread and Focal

Competitor facts above are pulled from Readlax’s own public pricing page, App Store/Play listing, and published reviews — not marketing fluff. Fast Reader’s own price is never hardcoded here: it is store-localized and set in App Store Connect / Google Play.

Try the real skim engine before you install anything

Drop a PDF, EPUB, DOCX, HTML file, or paste text into the live demo below — it runs the exact outline, key-term, and costed-read-plan math the app ships with, entirely in your browser.

Frequently asked questions

Is Fast Reader’s comprehension checking better than Readlax’s?

Readlax’s post-session quiz is rated "minimal" in side-by-side reviews, and its brain-training framing is explicitly flagged by reviewers as not evidence-backed. Fast Reader generates three deterministic check types — cloze, sequence, and verbatim-recognition — straight from the passage you just read, not a stock quiz bank.

Does Fast Reader have a notebook like Readlax?

Readlax has no notebook or capture layer at all. Fast Reader’s notebook captures quotes with sentence-snap and tag filtering, and exports to Markdown.

Does Fast Reader have gamified drills like Readlax?

Fast Reader’s trainer uses a calibration staircase and five progressive-overload drills rather than Readlax’s game-style framing — the goal is a measured reading rate, not a game score.

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