# Simple Factors vs DigiChess

The clearest difference is price: DigiChess at Free against Simple Factors's $0.99. DigiChess also leads on update cadence (every 8 months vs every 20 months). Simple Factors's advantage is in-app purchases (none vs 1). On review sentiment, ads, monetization model and device support there is nothing between them.

DigiChess is free to download; Simple Factors costs $0.99 up front. DigiChess sells 1 one-off in-app purchase. Simple Factors asks for nothing beyond the download.

Simple Factors ships an update every 20 months, DigiChess every 8 months. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Simple Factors | DigiChess |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[3.8 (5 ratings)](https://appshunter.io/ios/app/simple-factors/id1084119563/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 8 months** |
| Monetization | Paid | Paid |
| Size | 1 MB | 24 MB |
| Requires iOS | **15.0** | 15.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Joseph Palmer](https://appshunter.io/developer/914507761) | [Solnatrix Inc.](https://appshunter.io/developer/1642997323) |

## What reviewers say

### Simple Factors

[App page](https://appshunter.io/ios/app/simple-factors/id1084119563)

This app helps users understand numbers by providing their factors and checking for primality or divisibility. It offers a straightforward interface for quick calculations up to 10 trillion.

**Highlights:** Calculates factors of numbers, Checks for primality, Determines divisibility, Supports numbers up to 10 trillion, Simple, menu-free interface

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

**In-app purchases:** none


### DigiChess

[App page](https://appshunter.io/ios/app/digichess/id1642997321)

Instantly convert chess board images into interactive digital representations. An AI recognizes pieces, eliminating manual setup and saving preparation time. Export positions to analysis engines or popular chess platforms.

**Highlights:** Image to digital board conversion, AI piece recognition, FEN description generation, Save and edit positions, Export to Lichess/Chess.com

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DigiChess Premium No Advertisements | $7.99 | one-time |


## Frequently asked questions

### Is Simple Factors free?

Simple Factors costs $0.99, with no in-app purchases.

### Is DigiChess free?

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

### Do Simple Factors or DigiChess have ads?

Neither Simple Factors nor DigiChess shows ads.

### Which is updated more often, Simple Factors or DigiChess?

Simple Factors ships an update every 20 months, and DigiChess every 8 months. Most recently, Simple Factors was updated on October 24, 2026 and DigiChess on October 6, 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.*