# Calculus Gacha！ vs Para Flashcards

The clearest difference is update cadence: Calculus Gacha！ at every 5 days against Para Flashcards's every 3 weeks. Calculus Gacha！ also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Calculus Gacha！ sells 2 one-off in-app purchases and Para Flashcards sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Calculus Gacha！ ships an update every 5 days, Para Flashcards every 3 weeks. The most recent releases landed on November 12, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Calculus Gacha！ | Para Flashcards |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Size | 84 MB | 19 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shunsuke Nakamura](https://appshunter.io/developer/1828229182) | [Anton Rumyantsev](https://appshunter.io/developer/1882369162) |

## What reviewers say

### Calculus Gacha！

[App page](https://appshunter.io/ios/app/calculus-gacha/id6753078774)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Tutor Pass | $2.99 | one-time |
| AI Tutor Plus(500) | $2.99 | one-time |


### Para Flashcards

[App page](https://appshunter.io/ios/app/para-flashcards/id6760022415)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $2.99 | per month |
| Yearly Pro | $24.99 | per year |
| Lifetime Pro | $59.99 | one-time |


## Frequently asked questions

### Is Calculus Gacha！ free?

Calculus Gacha！ is free to download, with in-app purchases available.

### Is Para Flashcards free?

Para Flashcards is free to download, with in-app purchases available.

### Do Calculus Gacha！ or Para Flashcards have ads?

Neither Calculus Gacha！ nor Para Flashcards shows ads.

### Which is updated more often, Calculus Gacha！ or Para Flashcards?

Calculus Gacha！ ships an update every 5 days, and Para Flashcards every 3 weeks. Most recently, Calculus Gacha！ was updated on November 12, 2026 and Para Flashcards on November 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.*