Comparison

Readlax vs C2 Flanker Task

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

Head to head
About

Readlax

Enhance cognitive skills with a suite of tools including memory games, speed reading exercises, and a habit tracker. Improve focus, learn touch typing, and organize knowledge with smart note-taking features.

Highlights
  • Habit tracker
  • Memory games
  • Speed reading exercises
  • Smart note-taking
  • Focus timer
  • Touch typing training
Features
Read full description

Readlax - All-In-One Productivity Super App: - Habit tracker - Memory games - Speed reading - Smart notes - Focus timer Readlax provides the most popular and effective productivity apps on one platform: daily habit tracker, memory games, speed reading, focus and concentration, and note-taking. Habit tracker is a tool designed to help you monitor and build daily habits or routines. Memory games are games designed to challenge and improve memory skills. Most popular Readlax memory games: "Memory Grid", "Memory Number", and "Card Match". Speed reading is a technique designed to help people read texts faster than usual. It often involves minimizing subvocalization and expanding peripheral vision. Readlax provides many speed reading exercises: "Letter Grid", "Bigram", "Trigram", "Subvocalization". Readlax users improve their reading speed by an average of 50% in 2 weeks. Touch typing - the skill of typing without looking at the keys. Readlax has 37 touch typing exercises. Smart note-taking (slip-box method or “Zettelkasten”) - an effective note-taking method to store and organize your knowledge. Focus timer - a time management method based on 25-minute stretches of focused work broken by 5-minute breaks. HOW DOES IT WORK? - Play memory games; - Read books and news; - Train reading speed; - Train typing speed; - Take smart notes. Use the tracker to monitor your progress in memory games and speed reading training. Use notes to build a personal knowledge system. The focus timer will help you stay focused. REVIEWS: - "I engage in memory games every day" - "The speed reading modules have helped improve my reading speed" - "You should definitely try these memory games and speed reading exercises" - "“Memory Number” and “Card Match” are two of the loveliest games I’ve ever played" READLAX PRO PRICING & TERMS We offer the following Pro subscriptions: Monthly: $8.99 USD per month Annual: $44.99 USD per year Lifetime: $199.99 USD These prices are for United States customers. Pricing in other countries may vary, and actual charges may be converted to your local currency depending on your country of residence. Privacy Policy: https://www.readlax.com/legal/privacy-policy Terms of Service: https://www.readlax.com/legal/terms

About

C2 Flanker Task

This app measures response times for a flanker task, recording data in milliseconds. Export your results to a CSV file for analysis in spreadsheet applications. Customize the task by altering coloring, background brightness, and arrow shapes.

Highlights
  • Measures response time in milliseconds
  • CSV data export for spreadsheets
  • Customizable task parameters
  • Analyzes flanker task effects
  • Supports iPhone and iPad
Features
Read full description

The iOS app "C2 Flanker Task" records the response time of a flanker task (task conflict) in milliseconds. Response time is the time from when the task is displayed to when the answer button is touched (touchdown). The recorded data can be output to a CSV file and read into a spreadsheet application such as Excel. In addition to the orthodox flanker task, you can also check the effect by changing the presence or absence of coloring, the brightness of the background, the shape of the arrow, and so on. * The effect of the flanker task appears, for example, as the difference between the time to recognize the direction of the central arrow of →→→→→ and the time to recognize the direction of the central arrow of ←← → ←←. [details] https://app.brain-workout.org/flankertask-e/

Screenshots

Readlax4 screens
C2 Flanker Task4 screens

Verdict

The call

The clearest difference is price: Readlax at Free against C2 Flanker Task's $3.99. Readlax also leads on update cadence (monthly vs every 12 months). C2 Flanker Task's advantage is in-app purchases (none vs 5). On review sentiment, ads, device support and iOS requirement 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

Readlax is free to download; C2 Flanker Task costs $3.99 up front. Readlax sells 5 in-app purchases, starting at $4.99 per month. C2 Flanker Task asks for nothing beyond the download.

UpkeepUpdate frequency

Readlax ships an update monthly, C2 Flanker Task every 12 months. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

Scorecard4 real differences · 6 level
Readlax versus C2 Flanker Task: the parameters behind the verdict, then further details
ParameterReadlaxC2 Flanker Task
PriceFree — better$3.99
Rating4.5 (54 ratings) — better—
Positive reviews94.7% of reviews100.0% of reviews — better
Number of ratings54 — better—
Update frequencyMonthly — betterEvery 12 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium — betterPaid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.615.6 — better
Further details — not scored
Size65 MB1 MB
Age rating4+4+
DeveloperReadlax, Inc.Yasuyoshi Ota

Customer experience

Readlax

All ratings46 ratings
Positive89.1%
Neutral0.0%
Negative10.9%
Written reviews75 reviews
Positive94.7%
Neutral0.0%
Negative5.3%

C2 Flanker Task

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Readlax

Reported bugs

7 issues
  • Trial period confusion leading to unexpected charges
  • Difficulty understanding game stages/instructions
  • Visual clarity issues with text/background colors
  • Specific game glitches (e.g., Memory Number marking correct answers as incorrect)
  • App not working well on iPhone for one user
Show 2 more
  • Workout calendar not updating instantly
  • Some users unable to progress past the first game

Requested features

10 requests
  • Improve UI for better navigation
  • Add more game variety to reduce repetitiveness
  • Include a 'How to use the app' section
  • Add social media sharing for scores
  • Improve visibility of text in certain games
Show 5 more
  • Add reading aloud functionality
  • More reading material in Spanish
  • Option to select other articles
  • Add third level of complexity for some games
  • More puzzles and games

C2 Flanker Task

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

Readlax

Subscriptions4
  • Readlax PRO Monthly$4.991 Month
  • $5.99/month Subscription$5.991 Month
  • Readlax PRO Monthly$8.991 Month
Show 1 more
  • Readlax PRO Yearly$44.991 Year
One-time1
  • Readlax for Life, billed once$199.99
None

C2 Flanker Task

No in-app purchases

Questions

Is Readlax free?
Readlax is free to download, with in-app purchases available.
Is C2 Flanker Task free?
C2 Flanker Task costs $3.99, with no in-app purchases.
Do Readlax or C2 Flanker Task have ads?
Neither Readlax nor C2 Flanker Task shows ads.
Which is updated more often, Readlax or C2 Flanker Task?
Readlax ships an update monthly, and C2 Flanker Task every 12 months. Most recently, Readlax was updated on October 24, 2026 and C2 Flanker Task on October 16, 2026.

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