# AddCalc PRO vs noteSUM

The clearest difference is price: noteSUM at Free against AddCalc PRO's $0.99. AddCalc PRO's advantage is in-app purchases (none vs 3) and ads (none vs shown). On update cadence, device support and iOS requirement there is nothing between them.

noteSUM is free to download; AddCalc PRO costs $0.99 up front. noteSUM sells 3 one-off in-app purchases. AddCalc PRO asks for nothing beyond the download.

AddCalc PRO ships an update every 6 weeks, noteSUM monthly. The most recent releases landed on September 14, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | AddCalc PRO | noteSUM |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Paid | — |
| Size | 4 MB | 7 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shinichi Aokawa](https://appshunter.io/developer/502862033) | [Kazuhiro Sawamura](https://appshunter.io/developer/620439638) |

## What reviewers say

### AddCalc PRO

[App page](https://appshunter.io/ios/app/addcalc-pro/id502862030)

This calculator app offers both standard and adder calculation modes, with customizable themes, sounds, and editing features. It allows for easy copying of logs and totals, and supports various calculation functions for accounting and everyday use.

**Highlights:** Dual calculator modes (adder and standard), Customizable button design, background, and brightness, Selectable sound effects, Input log editing and recalculation, Voice reading of input log, Copy log and total functionality, Decimal point and rounding switching

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

**In-app purchases:** none


### noteSUM

[App page](https://appshunter.io/ios/app/notesum/id1553539735)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Number of History records | $0.99 | one-time |
| Number of Favorites | $0.99 | one-time |
| Hide Ads | $2.99 | one-time |


## Frequently asked questions

### Is AddCalc PRO free?

AddCalc PRO costs $0.99, with no in-app purchases.

### Is noteSUM free?

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

### Do AddCalc PRO or noteSUM have ads?

noteSUM shows ads; AddCalc PRO does not.

### Which is updated more often, AddCalc PRO or noteSUM?

AddCalc PRO ships an update every 6 weeks, and noteSUM monthly. Most recently, AddCalc PRO was updated on September 14, 2026 and noteSUM on September 24, 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.*