# Simple Cal with History vs dapter

The clearest difference is ads: dapter at none against Simple Cal with History's shown. dapter also leads on update cadence (every 10 days vs every 37 months) and iOS requirement (16.4 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Simple Cal with History sells 1 in-app purchase, starting at $0.49 per month and dapter sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Simple Cal with History ships an update every 37 months, dapter every 10 days. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Simple Cal with History | dapter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (29 ratings)](https://appshunter.io/ios/app/simple-cal-with-history/id1065319834/reviews)** | — |
| Number of ratings | **29** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 37 months | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 6 MB | 90 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [NORIHIKO HAYASAKA](https://appshunter.io/developer/512237338) | [Anuar Shaidenov](https://appshunter.io/developer/6786665450) |

## What reviewers say

### Simple Cal with History

[App page](https://appshunter.io/ios/app/simple-cal-with-history/id1065319834)

This calculator app offers a straightforward way to perform calculations with a history log to review past results. Users can personalize the app's appearance with various stylish designs. An optional subscription removes all advertisements.

**Highlights:** Easy-to-use calculator, Calculation history log, 10 stylish design options, Ad-free option via subscription

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads (Monthly) | $0.49 | per month |


### dapter

[App page](https://appshunter.io/ios/app/dapter-notes-that-do-math/id6786665448)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dapter Plus Monthly | $0.99 | per month |
| Dapter Plus Yearly | $4.99 | per year |
| Dapter Plus Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Simple Cal with History free?

Simple Cal with History is free to download, with in-app purchases available.

### Is dapter free?

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

### Do Simple Cal with History or dapter have ads?

Simple Cal with History shows ads; dapter does not.

### Which is updated more often, Simple Cal with History or dapter?

Simple Cal with History ships an update every 37 months, and dapter every 10 days. Most recently, Simple Cal with History was updated on November 11, 2026 and dapter on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*