# Calculator vs PRO type

The clearest difference is ads: PRO type at none against Calculator's shown. PRO type also leads on iOS requirement (9.0 vs 15.6). Calculator's advantage is update cadence (every 2 months vs every 9 months). On price, 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 PRO type sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Calculator ships an update every 2 months, PRO type every 9 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | Calculator | PRO type |
| --- | --- | --- |
| 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 9 months |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 4 MB |
| Requires iOS | 15.6 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hideki Ogawa](https://appshunter.io/developer/498921566) | [DILTS JAPAN, LIMITED LIABILITY CO.](https://appshunter.io/developer/780416956) |

## 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 |


### PRO type

[App page](https://appshunter.io/ios/app/pro-type-v-fireplus/id1328424681)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GROM JC75 | $3.99 | one-time |
| CYGNUS-X SED8J | $3.99 | one-time |
| CYGNUS-X SEA5J | $3.99 | one-time |
| GROM JC61 | $3.99 | one-time |
| GSX-R125 DL33B/S125 DL32B | $3.99 | one-time |


## Frequently asked questions

### Is Calculator free?

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

### Is PRO type free?

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

### Do Calculator or PRO type have ads?

Calculator shows ads; PRO type does not.

### Which is updated more often, Calculator or PRO type?

Calculator ships an update every 2 months, and PRO type every 9 months. Most recently, Calculator was updated on November 2, 2026 and PRO type on November 2, 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.*