# C2 Flanker Task vs CSV Master

The clearest difference is review sentiment: C2 Flanker Task at 100% against CSV Master's 33%. C2 Flanker Task also leads on in-app purchases (none vs 1) and ads (none vs shown). CSV Master's advantage is price (Free vs $3.99) and update cadence (every 3 weeks vs every 12 months). On device support and iOS requirement there is nothing between them.

CSV Master is free to download; C2 Flanker Task costs $3.99 up front. CSV Master sells 1 one-off in-app purchase. C2 Flanker Task asks for nothing beyond the download.

C2 Flanker Task ships an update every 12 months, CSV Master every 3 weeks. The most recent releases landed on August 31, 2026 and August 11, 2026 respectively.

## The numbers

| Metric | C2 Flanker Task | CSV Master |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/csv-master/id1633580928/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | **100.0% of reviews** | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 15 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) | [Kazuhisa Kobayashi](https://appshunter.io/developer/1580882000) |

## What reviewers say

### 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


### CSV Master

[App page](https://appshunter.io/ios/app/csv-master/id1633580928)

Edit and create CSV files with a spreadsheet-like interface. Syncs with cloud storage and supports custom delimiters. Offers dark mode for comfortable viewing and editing on mobile devices.

**Highlights:** Edit and create CSV files, Spreadsheet-style table view, Cloud synchronization (iCloud), Import and export functionality, Customizable delimiters, Dark mode support

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is C2 Flanker Task free?

C2 Flanker Task costs $3.99, with no in-app purchases.

### Is CSV Master free?

CSV Master is free to download, with in-app purchases available.

### Do C2 Flanker Task or CSV Master have ads?

CSV Master shows ads; C2 Flanker Task does not.

### Which is updated more often, C2 Flanker Task or CSV Master?

C2 Flanker Task ships an update every 12 months, and CSV Master every 3 weeks. Most recently, C2 Flanker Task was updated on August 31, 2026 and CSV Master on August 11, 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.*