# Techniques de l'Ingénieur vs Top Science

The clearest difference is in-app purchases: Techniques de l'Ingénieur at none against Top Science's 2. Techniques de l'Ingénieur also leads on iOS requirement (11.0 vs 15.1). Top Science's advantage is update cadence (weekly vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Top Science sells 2 in-app purchases, starting at $8.99 per month. Techniques de l'Ingénieur asks for nothing beyond the download.

Techniques de l'Ingénieur ships an update every 4 months, Top Science weekly. The most recent releases landed on October 26, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Techniques de l'Ingénieur | Top Science |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Size | 30 MB | 71 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Editions T.I.](https://appshunter.io/developer/1562703975) | [Romain Chikirou](https://appshunter.io/developer/1704989576) |

## What reviewers say

### Techniques de l'Ingénieur

[App page](https://appshunter.io/ios/app/techniques-de-lingenieur/id1436856536)

**Features:** macOS Compatibility

**In-app purchases:** none


### Top Science

[App page](https://appshunter.io/ios/app/top-science/id6756347650)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Top Science Pro Mensuel | $8.99 | per month |
| Top Science Pro Annuel | $89.99 | per year |


## Frequently asked questions

### Is Techniques de l'Ingénieur free?

Techniques de l'Ingénieur is free to download, with no in-app purchases.

### Is Top Science free?

Top Science is free to download, with in-app purchases available.

### Do Techniques de l'Ingénieur or Top Science have ads?

Neither Techniques de l'Ingénieur nor Top Science shows ads.

### Which is updated more often, Techniques de l'Ingénieur or Top Science?

Techniques de l'Ingénieur ships an update every 4 months, and Top Science weekly. Most recently, Techniques de l'Ingénieur was updated on October 26, 2026 and Top Science on October 10, 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.*