# Calculator - CalcPro — You can see the formula

> A calculator app that displays and allows editing of formulas. (iPhone/iPad app by Hideki Ogawa.)

- Source: https://appshunter.io/ios/app/calculator-calcpro/id1321874059 (this page in markdown: same URL + `.md`)
- Developer: [Hideki Ogawa](https://appshunter.io/developer/498921566)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 3.70/5 from 10 App Store ratings · 7 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 4 MB
- Languages: American English, Japanese
- Released: 2017-12-10
- Data updated: 2026-08-20
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/calculator-calcpro/id1321874059/reviews.md

## What is Calculator?

This is a calculator.

You can see the formula.

You can edit formulas later.
To edit a formula, tap the place you want to edit.

Purchasing an option allows you to turn off advertisements.

Since there is a sharing function, you can output calculation formulas and results to memos or send them by e-mail.

## Key features

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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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


## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/calculator-calcpro/id1321874059/reviews.md

### 5/5 — 後から編集できるのがいい

*2020-11-21*

計算式が残り、後から一部だけ修正できるのがとても便利。
キータッチした時のブルっていうバイブもいい感じ。

### 1/5 — Still get ads

*2019-06-22*

I paid to have ads removed and I still get ads. They said upgrade to version 1.4 and ads would go away. But I’m now on version 1.6 and still have ads. I really like the calculator otherwise, but regret paying for a version that doesn't exist.

**Developer response:** Did you pay for ad removal after upgrading to version 1.6?

### 5/5 — Ads removed fixed

*2017-12-20*

Seems that the update has fixed the issue with still having advertising after paying. Works as it should now 😀

**Developer response:** I modified some processing with version 1.4. Please try it with that version. Refund can be done from iTunes Support, so please contact iTunes Support.
Many people purchased it, most people purchased successfully. However, it is reported that some people fail to purchase. It seems that sometimes you can purchase correctly if you reset it with ITunes Support. Please consider.

### 4/5 — こんな機能が欲しかった

*2017-12-19*

計算履歴が表示されているので、とても便利です

### 1/5 — Ads stay after purchase

*2017-12-18*

Ya, me too... paid $1.99 and Ed steak.

I have tried repurpose thing multiple times and tried restoring multiple times and still the Ed state.

The ads are so obnoxious that makes the program on usable if you have more than just a couple calculations.

Very disappointed

**Developer response:** I modified some processing with version 1.4. Please try it with that version.

### 2/5 — Paid for no ads

*2017-12-14*

Paid for no ads. They disappear then come back!
You said ads that disappear never come back. Not true same ads play over and over. The music from the ads is also obnoxious and I can’t turn it off.

**Developer response:** I modified some processing with version 1.4. Please try it with that version.

### 3/5 — Remove ad issue

*2017-12-13*

I paid 1.99 to have the ads removed, but they are still there. Update 12/13/17 tried restore option 3 times and did not work.

**Developer response:** I modified some processing with version 1.4. Please try it with that version.

## Frequently asked questions about Calculator

### Does CalcPro have ads?

Yes, CalcPro contains advertisements. Users have the option to purchase an in-app upgrade to remove these ads.

### How much does CalcPro cost?

CalcPro is available for free. There is an optional in-app purchase to remove advertisements.

### What devices is CalcPro available on?

CalcPro is compatible with iPhone, iPad, and iPod devices.

### What is the age rating for CalcPro?

CalcPro has an age rating of 4+, making it suitable for a wide range of users.

### How often is CalcPro updated?

CalcPro was last updated on August 15, 2024, indicating regular maintenance and potential feature additions.

### Can I edit previous calculations in CalcPro?

Yes, CalcPro allows you to edit formulas from previous calculations by simply tapping on the desired part of the formula.

### How can I share my calculations from CalcPro?

CalcPro offers a sharing function that enables you to output calculation formulas and results to memos or send them via email.

### What is the user rating for CalcPro?

CalcPro has a rating of 3.6 stars based on 9 user reviews.

## Version history (last 5 releases)

### 4.2 — 2026-04-20

Updated for iOS 26.

### 4.1 — 2024-08-15

Bug fix.

### 4.0 — 2023-07-10

GDPR is supported.

### 3.2 — 2023-04-12

Updated for iOS 16.

### 3.1 — 2021-11-14

Updated for iOS 15

## Apps similar to Calculator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [A-note](https://appshunter.io/ios/app/a-note/id1454807560) | — | Free | Utilities |
| [龙嘉SCM供应商](https://appshunter.io/ios/app/scm/id1459545200) | — | Free | Utilities |
| [Pusher for Firebase](https://appshunter.io/ios/app/pusher-for-firebase/id1450720020) | 5.0 (1) | $0.99 | Utilities |
| [Livly Hub](https://appshunter.io/ios/app/livly-hub/id1464225200) | 4.7 (13) | Free | Utilities |
| [TCI Bitacora](https://appshunter.io/ios/app/tci-bitacora/id1464209780) | — | Free | Utilities |
| [Miitems](https://appshunter.io/ios/app/miitems/id1464179200) | — | Free | Utilities |

## More apps by Hideki Ogawa

- [Continuous rec - ConCam](https://appshunter.io/ios/app/continuous-rec-concam/id642095994)
- [Color pencil effect - Arara](https://appshunter.io/ios/app/color-pencil-effect-arara/id862273302)
- [しおん](https://appshunter.io/ios/app/id1042844087)
- [Retouch the eyes - AiAi](https://appshunter.io/ios/app/retouch-the-eyes-aiai/id1073245265)
- [血糖値](https://appshunter.io/ios/app/id1263874044)

All apps by Hideki Ogawa: https://appshunter.io/developer/498921566

## Related topics

[hideki ogawa](https://appshunter.io/ios/topics/hideki-ogawa)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*