# Calculator vs Formudrag

The clearest difference is ads: Formudrag at none against Calculator's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Calculator sells 1 one-off in-app purchase and Formudrag sells 7 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Calculator | Formudrag |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (10 ratings)](https://appshunter.io/ios/app/calculator-calcpro/id1321874059/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 94 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Hideki Ogawa](https://appshunter.io/developer/498921566) | [欣 王](https://appshunter.io/developer/1816555255) |

## What reviewers say

### Calculator

[App page](https://appshunter.io/ios/app/calculator-calcpro/id1321874059)

This utility app allows users to perform calculations and view the formulas used. It offers the ability to edit past calculations and share results via email or memos. An optional purchase can remove advertisements.

**Highlights:** View calculation formulas, Edit past formulas, Share calculations, Ad-free option via purchase, Output to memos or email

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove in-app ads | $2.99 | one-time |


### Formudrag

[App page](https://appshunter.io/ios/app/formudrag/id6746382275)

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Annual | $12.99 | per year |
| Drag Indicator Styles | $1.99 | one-time |
| Formula History Access | $2.99 | one-time |
| Export Formats | $4.99 | one-time |
| Lifetime | $29.99 | one-time |
| Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Calculator free?

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

### Is Formudrag free?

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

### Do Calculator or Formudrag have ads?

Calculator shows ads; Formudrag does not.

### Which is updated more often, Calculator or Formudrag?

Calculator ships an update every 2 months, and Formudrag every 2 months. Most recently, Calculator was updated on October 24, 2026 and Formudrag on October 25, 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.*