# CSV File Viewer vs IoTシステム A･ISys

The clearest difference is in-app purchases: IoTシステム A･ISys at none against CSV File Viewer's 6. CSV File Viewer's advantage is update cadence (every 9 days vs every 7 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CSV File Viewer sells 6 in-app purchases, starting at $2.99 per month. IoTシステム A･ISys asks for nothing beyond the download.

CSV File Viewer ships an update every 9 days, IoTシステム A･ISys every 7 months. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | CSV File Viewer | IoTシステム A･ISys |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (21 ratings)](https://appshunter.io/ios/app/csv-file-viewer-smart-csv/id1611962123/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 93.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 7 months |
| Monetization | Freemium | — |
| Size | 51 MB | 53 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Hue Nguyen](https://appshunter.io/developer/1716687307) | [ACTN K.K.](https://appshunter.io/developer/1519939443) |

## What reviewers say

### CSV File Viewer

[App page](https://appshunter.io/ios/app/csv-file-viewer-smart-csv/id1611962123)

This app acts as a comprehensive CSV file explorer, allowing users to view, edit, and query CSV data. It offers features like AI-powered queries, SQL querying, chart creation, and PDF conversion with customizable styling. Manage and share exported files easily.

**Highlights:** AI Assistant for CSV queries, SQL query support, Create charts from data, Convert CSV to PDF with custom styles, Visual filtering and searching, Manage and share exported files

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $2.99 | per month |
| Pro Monthly | $4.99 | per month |
| Pro Annual | $14.99 | per year |
| Pro Annual | $24.99 | per year |
| Pro Lifetime | $39.99 | one-time |
| Pro Lifetime | $49.99 | one-time |


### IoTシステム A･ISys

[App page](https://appshunter.io/ios/app/iot-aisys/id1615943586)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CSV File Viewer free?

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

### Is IoTシステム A･ISys free?

IoTシステム A･ISys is free to download, with no in-app purchases.

### Do CSV File Viewer or IoTシステム A･ISys have ads?

Neither CSV File Viewer nor IoTシステム A･ISys shows ads.

### Which is updated more often, CSV File Viewer or IoTシステム A･ISys?

CSV File Viewer ships an update every 9 days, and IoTシステム A･ISys every 7 months. Most recently, CSV File Viewer was updated on October 24, 2026 and IoTシステム A･ISys 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.*