# Notetka vs SUM NUM

The clearest difference is in-app purchases: SUM NUM at none against Notetka's 2. SUM NUM also leads on iOS requirement (15.6 vs 26.0). Notetka's advantage is update cadence (every 10 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. Notetka sells 2 one-off in-app purchases. SUM NUM asks for nothing beyond the download.

Notetka ships an update every 10 days, SUM NUM monthly. The most recent releases landed on October 4, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Notetka | SUM NUM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sum-num/id6755496124/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 10 days** | Monthly |
| Monetization | — | Free |
| Size | 15 MB | 19 MB |
| Requires iOS | 26.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Aleh Mazol](https://appshunter.io/developer/1687107967) | [Subway de Guatemala SA](https://appshunter.io/developer/1264179918) |

## What reviewers say

### Notetka

[App page](https://appshunter.io/ios/app/notetka-notebook-notepad-memo/id6448954120)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 7-Day Free Trial | Free | one-time |
| Lifetime | $19.99 | one-time |


### SUM NUM

[App page](https://appshunter.io/ios/app/sum-num/id6755496124)

This app helps manage inventory, convert measurements, and perform financial calculations for business operations. It features a calculator with history, a comprehensive unit converter, and advanced financial tools like interest and amortization calculations.

**Highlights:** Calculator with history, Unit converter for mass, volume, length, temperature, Financial calculator (interest, TVM, amortization), Save and reuse calculation results, Export financial results to PDF

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

**In-app purchases:** none


## Frequently asked questions

### Is Notetka free?

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

### Is SUM NUM free?

SUM NUM is free to download, with no in-app purchases.

### Do Notetka or SUM NUM have ads?

Neither Notetka nor SUM NUM shows ads.

### Which is updated more often, Notetka or SUM NUM?

Notetka ships an update every 10 days, and SUM NUM monthly. Most recently, Notetka was updated on October 4, 2026 and SUM NUM on October 17, 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.*