# Geek Math vs ieRcalc

The clearest difference is in-app purchases: ieRcalc at none against Geek Math's 1. ieRcalc also leads on ads (none vs shown) and update cadence (every 4 days vs every 10 months). Geek Math's advantage is iOS requirement (12.0 vs 15.1). On price and device support there is nothing between them.

Both are free to download. Geek Math sells 1 one-off in-app purchase. ieRcalc asks for nothing beyond the download.

Geek Math ships an update every 10 months, ieRcalc every 4 days. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Geek Math | ieRcalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/geek-math-linking-numbers/id6474589909/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 29 MB | 37 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [QQ TSUBASA](https://appshunter.io/developer/568750169) | [REI KAMIKURA](https://appshunter.io/developer/1896764006) |

## What reviewers say

### Geek Math

[App page](https://appshunter.io/ios/app/geek-math-linking-numbers/id6474589909)

This calculator app features an intuitive column layout for multiple equations, allowing real-time modification of numbers and operators. It offers interactive linking of numbers and a unique lock feature to protect important values.

**Highlights:** Intuitive column layout, Real-time equation modification, Linked numbers for interactive calculation, Lock feature for number protection, Multi-line display, Theme selection

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium No ad & more math rows | $1.99 | one-time |


### ieRcalc

[App page](https://appshunter.io/ios/app/iercalc/id6771453728)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Geek Math free?

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

### Is ieRcalc free?

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

### Do Geek Math or ieRcalc have ads?

Geek Math shows ads; ieRcalc does not.

### Which is updated more often, Geek Math or ieRcalc?

Geek Math ships an update every 10 months, and ieRcalc every 4 days. Most recently, Geek Math was updated on November 4, 2026 and ieRcalc on November 5, 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.*