# inTT vs CES Test

The clearest difference is review sentiment: inTT at 90% against CES Test's 17%. inTT also leads on price (Free vs $5.99) and in-app purchases (none vs 1). CES Test's advantage is update cadence (every 2 months vs every 6 months). On ads and device support there is nothing between them.

inTT is free to download; CES Test costs $5.99 up front. CES Test sells 1 one-off in-app purchase. inTT asks for nothing beyond the download.

inTT ships an update every 6 months, CES Test every 2 months. Both last shipped on October 8, 2026.

## The numbers

| Metric | inTT | CES Test |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ces-test-seagull-training/id6468171620/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **90.0% of reviews** | 16.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | **Free** | Paid |
| Size | 17 MB | 65 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vladimir Shutov](https://appshunter.io/developer/590515613) | [Andrey Andreyev](https://appshunter.io/developer/1418253369) |

## 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


### CES Test

[App page](https://appshunter.io/ios/app/ces-test-seagull-training/id6468171620)

Prepare for marine certification exams with a comprehensive collection of Crew Evaluation System tests and answers. Features include preparation, exam, and marathon modes, plus a question search function.

**Highlights:** CES test preparation, Exam mode, Marathon mode, Question search, Engine tests, Deck tests, Detailed tests

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ces test questions and answers | $6.99 | one-time |


## Frequently asked questions

### Is inTT free?

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

### Is CES Test free?

CES Test costs $5.99, and also offers in-app purchases.

### Do inTT or CES Test have ads?

Neither inTT nor CES Test shows ads.

### Which is updated more often, inTT or CES Test?

inTT ships an update every 6 months, and CES Test every 2 months. Most recently, inTT was updated on October 8, 2026 and CES Test on October 8, 2026.

---

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