# DV Axiom vs Sigma

The clearest difference is price: Sigma at Free against DV Axiom's $119.99. Sigma also leads on in-app purchases (none vs 2) and update cadence (every 4 days vs every 3 weeks). On ads and device support there is nothing between them.

Sigma is free to download; DV Axiom costs $119.99 up front. DV Axiom sells 2 in-app purchases, starting at $3.99 per month. Sigma asks for nothing beyond the download.

DV Axiom ships an update every 3 weeks, Sigma every 4 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | DV Axiom | Sigma |
| --- | --- | --- |
| Price | $119.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dv-axiom/id6758355409/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Paid | — |
| Size | 173 MB | 7 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Marc Super](https://appshunter.io/developer/1792449328) | [MAJOR Productions LLC](https://appshunter.io/developer/1885618341) |

## What reviewers say

### DV Axiom

[App page](https://appshunter.io/ios/app/dv-axiom/id6758355409)

A professional calculator designed for magicians and mentalists to create astonishing calculation effects for live performances. It offers advanced configuration options and ensures reliability on stage, acting as a specialized magic instrument.

**Highlights:** Perform impossible calculations, Precision and control, Designed for professional magicians, Create astonishing calculation effects, Built for live performance, Advanced configuration options, Engineered for reliability

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Axiom Pro – Monthly | $3.99 | per month |
| Axiom Pro – Yearly | $34.99 | per year |


### Sigma

[App page](https://appshunter.io/ios/app/sigma-calculator/id6760669373)

**In-app purchases:** none


## Frequently asked questions

### Is DV Axiom free?

DV Axiom costs $119.99, and also offers in-app purchases.

### Is Sigma free?

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

### Do DV Axiom or Sigma have ads?

Neither DV Axiom nor Sigma shows ads.

### Which is updated more often, DV Axiom or Sigma?

DV Axiom ships an update every 3 weeks, and Sigma every 4 days. Most recently, DV Axiom was updated on October 31, 2026 and Sigma on October 31, 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.*