Comparison

Seed vs periods.

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

Head to head
About

Seed

Features
Read full description

Seed is a focused speed reading app built around RSVP: one word (or a small chunk) displayed at a fixed point, so your eyes stop darting around the page. Import anything • Paste from your clipboard • Start from a link (web article) • Load a PDF and extract readable text Read at your pace • Adjust WPM in seconds • Play and pause anytime • Scrub through progress with a slider Pick up where you left off • Seed remembers your last position and settings for each document • Resume instantly without re importing Designed for focus • Minimal UI while reading • Offline library after import for quick access anywhere If you want less distraction and more throughput, Seed gives you a simple, repeatable reading workflow.

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.

Screenshots

Seed4 screens
periods.4 screens

Verdict

The call

The clearest difference is iOS requirement: Seed at 18.0 against periods.'s 26.2. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

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

Scorecard1 real difference Ā· 4 level
Seed versus periods.: the parameters behind the verdict, then further details
ParameterSeedperiods.
PriceFreeFree
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone
Requires iOS18.0 — better26.2
Further details — not scored
Size1 MB2 MB
Age rating4+4+
DeveloperAdithya Firmansyah PutraJordan Eromonsele

In-app purchases

None

Seed

No in-app purchases

None

periods.

No in-app purchases

Questions

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

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