# inTT vs cMate Apps Конвенция плюс

The clearest difference is review sentiment: inTT at 90% against cMate Apps Конвенция плюс's 22%. inTT also leads on iOS requirement (8.0 vs 12.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

inTT ships an update every 6 months, cMate Apps Конвенция плюс every 12 months. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | inTT | cMate Apps Конвенция плюс |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **90.0% of reviews** | 22.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 12 months |
| Monetization | Free | Free |
| Size | 17 MB | 14 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vladimir Shutov](https://appshunter.io/developer/590515613) | [Maxim Lukyanenko](https://appshunter.io/developer/1496252741) |

## What reviewers say

### inTT

[App page](https://appshunter.io/ios/app/intt/id590515610)

This app assists engineers and students with mathematical calculations. It offers tools for linear and bilinear interpolation, along with the ability to save tables. Users can request additional features from the developer.

**Highlights:** Linear interpolation, Bilinear interpolation, Table saving, Feature request option

**Features:** macOS Compatibility

**In-app purchases:** none


### cMate Apps Конвенция плюс

[App page](https://appshunter.io/ios/app/cmate-apps/id6502718737)

This app consolidates all developer applications, focusing on maritime training and information for users, especially those in Russia. It offers preparation modules for various maritime roles and certifications, alongside informational tools for navigation and port data.

**Highlights:** Maritime certification preparation, Specialized training modules, Information on vessels and ports, IMO phrases and codes, Consolidated developer apps

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is inTT free?

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

### Is cMate Apps Конвенция плюс free?

cMate Apps Конвенция плюс is free to download, with no in-app purchases.

### Do inTT or cMate Apps Конвенция плюс have ads?

Neither inTT nor cMate Apps Конвенция плюс shows ads.

### Which is updated more often, inTT or cMate Apps Конвенция плюс?

inTT ships an update every 6 months, and cMate Apps Конвенция плюс every 12 months. Most recently, inTT was updated on October 8, 2026 and cMate Apps Конвенция плюс on October 9, 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.*