# Calcul Éclair vs SAT Math Prep

Calcul Éclair and SAT Math Prep are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Calcul Éclair sells 1 one-off in-app purchase and SAT Math Prep sells 2 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Calcul Éclair | SAT Math Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sat-math-prep-act-and-calculus/id6799845441/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 17 MB | 50 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aurelien Roblin](https://appshunter.io/developer/6794072430) | [Anul Agarwal](https://appshunter.io/developer/1515910661) |

## What reviewers say

### Calcul Éclair

[App page](https://appshunter.io/ios/app/calcul-eclair-calcul-mental/id6795655908)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pack Pro — achat unique | $3.99 | one-time |


### SAT Math Prep

[App page](https://appshunter.io/ios/app/sat-math-prep-act-and-calculus/id6799845441)

Prepare for standardized math tests and build confidence with adaptive practice. This app offers generated questions, hints, and detailed solutions across a wide range of math topics, from arithmetic to calculus. Track your progress and master skills through various practice modes.

**Highlights:** Adaptive difficulty based on mastery, Generated questions with instant feedback, Hints and worked solutions, Progress tracking and mistake journal, Multiple practice modes (Zen, Timed, Until Error), Exam-specific practice paths

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Math Pro Weekly | $3.99 | per 7 days |
| Math Pro Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is Calcul Éclair free?

Calcul Éclair is free to download, with in-app purchases available.

### Is SAT Math Prep free?

SAT Math Prep is free to download, with in-app purchases available.

### Do Calcul Éclair or SAT Math Prep have ads?

Neither Calcul Éclair nor SAT Math Prep shows ads.

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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.*