Comparison

ReadFlow vs Coco

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

Head to head
About

ReadFlow

Features
Read full description

Read faster, and prove you understood it. ReadFlow is an RSVP speed reader built around a daily challenge. Words appear one at a time in a single spot, so your eyes stop jumping across the line. After every read comes a short comprehension quiz, because speed only counts if you score. THE DAILY Everyone gets the same passage each day. Read it at speed, take the quiz, and see where you placed against everyone who played. It takes about two minutes. Share your score card and keep your streak going. READ YOUR OWN BOOKS AND DOCUMENTS Import PDFs and DRM-free EPUBs, paste any article, or share a web page straight from Safari. Long documents are split into short chapters with a time estimate for each. ReadFlow saves your place and picks up at the start of your last sentence, so you can finish a book a few minutes at a time. THE GAUNTLET Escalating rounds from 300 to 900 words per minute. Pass the comprehension check to reach the next round. See how far your reading holds up. BUILT FOR FOCUS • RSVP reader with adjustable speed and optimal recognition point highlighting • Comprehension quiz after every session, scored on speed and accuracy • Library of passages by topic and difficulty, with new ones added regularly • Streaks, XP, and personal bests • Dyslexia-friendly font, plus dark, light, sepia, and high-contrast themes • Works on iPhone and iPad READFLOW PREMIUM Unlimited sessions, daily challenge replays, streak saves and premium themes. Choose a monthly or yearly subscription with a 7-day free trial on yearly, or pay once for lifetime access. Privacy policy: https://policyforge.co/policy/privacy-readflow Terms of use: https://policyforge.co/policy/terms-readflow

About

Coco

Learn Mandarin Chinese through engaging illustrated stories, native audio, and interactive tools. Build reading, vocabulary, and speaking skills in context with features like tap-to-translate and shadowing practice. Progress from beginner to advanced levels with HSK-aligned content.

Highlights
  • Illustrated graded readers
  • Tap-to-translate and pinyin support
  • Native Mandarin audio with slow mode
  • Shadowing practice for pronunciation
  • Contextual hanzi and vocabulary learning
  • SRS flashcards and quizzes
  • Offline reading and news articles
Features
Read full description

Learn Chinese with stories written by a real native teacher. 200+ illustrated stories, 73 levels, from your first words to HSK 6. Every Coco story is written by Yaxuan, a native Chinese teacher, and graded to your level. You read real Chinese from day one, with the tools to understand every word. READ WITH HELP ON EVERY PAGE - Tap any word for its meaning, pinyin, tones and example sentences - Translate the whole page in one tap - Turn pinyin and tone colors on or off as you improve - Grammar explained right inside the story LISTEN AND SPEAK - Native Beijing-accent audio for every story - Slow mode for beginners - Shadowing practice for pronunciation, tones and rhythm REMEMBER WHAT YOU READ - Save words while you read - Review them with SRS flashcards made from your own stories - Quizzes after every story: characters, pinyin, tones, listening, speaking, translation A REAL CURRICULUM - HSK 1 to HSK 6, level by level, in the right order - Real Chinese news adapted to your level - Offline reading - XP, streaks and badges to keep you going Rated 4.9 by learners. Download Coco Chinese and read your way to fluency. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ReadFlow4 screens
Coco4 screens

Verdict

The call

The clearest difference is ads: ReadFlow at none against Coco's shown. Coco's advantage is update cadence (fortnightly vs every 2 months) and iOS requirement (15.1 vs 17.0). On price, 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. ReadFlow sells 2 in-app purchases, starting at $5.99 per month and Coco sells 5 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ReadFlow ships an update every 2 months, Coco fortnightly. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 6 level
ReadFlow versus Coco: the parameters behind the verdict, then further details
ParameterReadFlowCoco
PriceFreeFree
Rating—5.0 (4 ratings) — better
Number of ratings—4 — better
Update frequencyEvery 2 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size33 MB109 MB
Age rating4+4+
DeveloperBITROVA LABS LTDJeremy Pitault

In-app purchases

2 purchases

ReadFlow

Subscriptions2
  • Premium Monthly7 Days trial$5.991 Month
  • Premium Yearly7 Days trial$34.991 Year
5 purchases

Coco

Subscriptions5
  • Monthly Premium Subscription$14.991 Month
  • Yearly Premium Subscription$33.991 Year
  • Yearly Premium Subscription$45.991 Year
Show 2 more
  • Yearly Premium Subscription$47.991 Year
  • Yearly Premium Subscription$99.991 Year

Questions

Is ReadFlow free?
ReadFlow is free to download, with in-app purchases available.
Is Coco free?
Coco is free to download, with in-app purchases available.
Do ReadFlow or Coco have ads?
Coco shows ads; ReadFlow does not.
Which is updated more often, ReadFlow or Coco?
ReadFlow ships an update every 2 months, and Coco fortnightly. Most recently, ReadFlow was updated on October 20, 2026 and Coco on October 24, 2026.

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