Comparison

periods. vs Speed Read by YComplex

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

periods.

Features
Read full description

Read faster. Understand more. One word at a time. periods. uses RSVP (Rapid Serial Visual Presentation) to deliver text at a fixed point so your eyes stay still and your brain does the reading. Import any article, PDF, or EPUB — or paste text directly — and read it at speeds you didn't think were possible. • Adaptive pacing adjusts timing based on word length and punctuation • On-device comprehension checks powered by Apple Intelligence • Focus Score tracks consistency, endurance, and speed over time • Daily challenge with a fresh passage every day • Reading streaks and detailed stats • Dark mode with a warm, comfortable palette • No accounts required — works offline, everything stays on your device Start at 300 words per minute. Push from there.

About

Speed Read by YComplex

This app helps you read faster by displaying words one at a time using Rapid Serial Visual Presentation. It trains your eyes to stay focused and reduces subvocalization. Import your own content or read web articles directly within the app.

Highlights
  • RSVP reader with focal letter highlighting
  • Adjustable reading speed (50-1000 WPM)
  • Import EPUB, PDF, TXT, Markdown
  • Read web articles via URL
  • Chapter navigation
  • Customizable fonts and dark theme
  • On-device library
Features
Read full description

Speed Read uses RSVP (Rapid Serial Visual Presentation) to help you read faster. Words are displayed one at a time with a highlighted focal letter, training your eyes to stay centered and eliminating subvocalization — the habit that slows most readers down. Import your own books, articles, and documents in EPUB, PDF, TXT, or Markdown format. Paste any web URL and the app extracts the article text automatically. Your entire library lives on-device. Features: - RSVP reader with a color-highlighted focal letter for each word - Adjustable speed from 50 to 1,000 words per minute - Two play modes: Play/Pause or Press to Play (hold to read, release to stop) - Chapter navigation for multi-chapter EPUBs - Import documents: EPUB, PDF, TXT, and Markdown files - Read web articles by pasting a URL - 7 monospace font choices including JetBrains Mono, Fira Code, and Courier Prime - Adjustable font size - Reading position saved automatically — pick up where you left off - Pure black dark theme designed for OLED screens - No account required. All data stays on your device.

Screenshots

periods.4 screens
Speed Read by YComplex3 screens

Verdict

The call

The clearest difference is iOS requirement: Speed Read by YComplex at 15.1 against periods.'s 26.2. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 7 level
periods. versus Speed Read by YComplex: the parameters behind the verdict, then further details
Parameterperiods.Speed Read by YComplex
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhoneiPhone, iPod — better
Requires iOS26.215.1 — better
Further details — not scored
Size2 MB48 MB
Age rating4+4+
DeveloperJordan EromonseleYComplex Ltd

In-app purchases

None

periods.

No in-app purchases

None

Speed Read by YComplex

No in-app purchases

Questions

Is periods. free?
periods. is free to download, with no in-app purchases.
Is Speed Read by YComplex free?
Speed Read by YComplex is free to download, with no in-app purchases.
Do periods. or Speed Read by YComplex have ads?
Neither periods. nor Speed Read by YComplex shows ads.

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