# Thetis Tools vs CSV Master

The clearest difference is in-app purchases: Thetis Tools at none against CSV Master's 1. Thetis Tools also leads on ads (none vs shown). CSV Master's advantage is update cadence (every 3 weeks vs every 7 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. CSV Master sells 1 one-off in-app purchase. Thetis Tools asks for nothing beyond the download.

Thetis Tools ships an update every 7 months, CSV Master every 3 weeks. The most recent releases landed on September 10, 2026 and August 11, 2026 respectively.

## The numbers

| Metric | Thetis Tools | CSV Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/csv-master/id1633580928/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 50 MB | 15 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thetis srl](https://appshunter.io/developer/397584184) | [Kazuhisa Kobayashi](https://appshunter.io/developer/1580882000) |

## What reviewers say

### Thetis Tools

[App page](https://appshunter.io/ios/app/thetis-tools/id1460268980)

**Features:** macOS Compatibility

**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 Thetis Tools free?

Thetis Tools is free to download, with no in-app purchases.

### Is CSV Master free?

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

### Do Thetis Tools or CSV Master have ads?

CSV Master shows ads; Thetis Tools does not.

### Which is updated more often, Thetis Tools or CSV Master?

Thetis Tools ships an update every 7 months, and CSV Master every 3 weeks. Most recently, Thetis Tools was updated on September 10, 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.*