# Readlax vs C2 Flanker Task

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.

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.

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.

## The numbers

| Metric | Readlax | C2 Flanker Task |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.5 (54 ratings)](https://appshunter.io/ios/app/readlax-brain-productivity/id1529149313/reviews)** | — |
| Number of ratings | **54** | — |
| Positive reviews | 94.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 12 months |
| Monetization | **Freemium** | Paid |
| Size | 65 MB | 1 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Readlax, Inc.](https://appshunter.io/developer/1529149315) | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) |

## What reviewers say

### Readlax

[App page](https://appshunter.io/ios/app/readlax-brain-productivity/id1529149313)

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:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Readlax PRO Monthly | $4.99 | per month |
| $5.99/month Subscription | $5.99 | per month |
| Readlax PRO Monthly | $8.99 | per month |
| Readlax PRO Yearly | $44.99 | per year |
| Readlax for Life, billed once | $199.99 | one-time |

**What reviewers like**

- 👍 User-friendly interface
- 🧠 Effective brain training games
- 💡 Variety of exercises (memory, focus, reading speed)
- 📈 Progress tracking feature
- ✨ Clean and organized layout

**What reviewers complain about**

- ⚠️ Trial period confusion/unexpected charges
- 🤔 Instructions can be confusing sometimes
- 🔄 Repetitive exercises over time
- 💰 Perceived high subscription costs
- 📱 Some users experienced issues with app functionality on iPhone

**Reported bugs**

- 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

**Requested features**

- 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


### C2 Flanker Task

[App page](https://appshunter.io/ios/app/c2-flanker-task/id1629584722)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*