# MemCalc vs calculator DUO

The clearest difference is in-app purchases: MemCalc at none against calculator DUO's 1. MemCalc also leads on ads (none vs shown) and iOS requirement (9.1 vs 16.5). calculator DUO's advantage is update cadence (every 10 days vs every 5 months) and ratings volume (3 vs 1). On price, rating and device support there is nothing between them.

Both are free to download. calculator DUO sells 1 one-off in-app purchase. MemCalc asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for MemCalc against 5.0 for calculator DUO. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

MemCalc ships an update every 5 months, calculator DUO every 10 days. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | MemCalc | calculator DUO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/memcalc/id1275872918/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/calculator-duo/id6739860116/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 20 MB | 18 MB |
| Requires iOS | **9.1** | 16.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Krisztian Bosze](https://appshunter.io/developer/1275872917) | [Wenbin lei](https://appshunter.io/developer/1787331500) |

## What reviewers say

### MemCalc

[App page](https://appshunter.io/ios/app/memcalc/id1275872918)

A user-friendly basic calculator designed for students, featuring a clean interface and the ability to store and recall past calculations. Quickly perform essential math operations and review your work.

**Highlights:** Easy to use basic calculator, Gorgeous design, Fast calculations, Stores all calculations, Review history in portrait mode, Tap to recall stored numbers

**Features:** macOS Compatibility

**In-app purchases:** none


### calculator DUO

[App page](https://appshunter.io/ios/app/calculator-duo/id6739860116)

This utility app allows for comfortable one-handed calculations by letting you reposition the keypad. It also provides features to save and reuse past answers, correct input with a swipe, and handle both everyday and scientific calculations, including date and time functions.

**Highlights:** One-handed keypad repositioning, Save and reuse past answers, Swipe to delete/correct input, Everyday and scientific functions, Date and time calculations, Customizable themes and display

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is MemCalc free?

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

### Is calculator DUO free?

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

### Which has better reviews, MemCalc or calculator DUO?

MemCalc and calculator DUO are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do MemCalc or calculator DUO have ads?

calculator DUO shows ads; MemCalc does not.

### Which is updated more often, MemCalc or calculator DUO?

MemCalc ships an update every 5 months, and calculator DUO every 10 days. Most recently, MemCalc was updated on November 3, 2026 and calculator DUO on November 4, 2026.

---

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