# Obelus Calculator vs Jotter = note + calc

The clearest difference is price: Obelus Calculator at Free against Jotter = note + calc's $2.99. Jotter = note + calc's advantage is iOS requirement (13.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Obelus Calculator is free to download; Jotter = note + calc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Obelus Calculator | Jotter = note + calc |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | — |
| Size | 1 MB | 10 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chris Wang](https://appshunter.io/developer/1723706836) | [Taras Hordiienko](https://appshunter.io/developer/1709472822) |

## What reviewers say

### Obelus Calculator

[App page](https://appshunter.io/ios/app/obelus-calculator/id6475239824)

**In-app purchases:** none


### Jotter = note + calc

[App page](https://appshunter.io/ios/app/jotter-note-plus-calc/id6476446539)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Obelus Calculator free?

Obelus Calculator is free to download, with no in-app purchases.

### Is Jotter = note + calc free?

Jotter = note + calc costs $2.99, with no in-app purchases.

### Do Obelus Calculator or Jotter = note + calc have ads?

Neither Obelus Calculator nor Jotter = note + calc shows ads.

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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.*