# JackDMS vs Geek Math

The clearest difference is in-app purchases: JackDMS at none against Geek Math's 1. JackDMS also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 10 months). On price, device support and iOS requirement there is nothing between them.

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

JackDMS ships an update every 3 weeks, Geek Math every 10 months. The most recent releases landed on August 10, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | JackDMS | Geek Math |
| --- | --- | --- |
| 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 | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 10 months |
| Monetization | — | Free with in-app purchases |
| Size | 71 MB | 29 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [帅 倪](https://appshunter.io/developer/1205384816) | [QQ TSUBASA](https://appshunter.io/developer/568750169) |

## What reviewers say

### JackDMS

[App page](https://appshunter.io/ios/app/jackdms/id1271002516)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is JackDMS free?

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

### Is Geek Math free?

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

### Do JackDMS or Geek Math have ads?

Geek Math shows ads; JackDMS does not.

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

JackDMS ships an update every 3 weeks, and Geek Math every 10 months. Most recently, JackDMS was updated on August 10, 2026 and Geek Math on September 9, 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.*