# Math Solver Pro vs Doomsday calculator memory

The clearest difference is price: Doomsday calculator memory at Free against Math Solver Pro's $4.99. Doomsday calculator memory also leads on update cadence (every 8 days vs every 2 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Doomsday calculator memory is free to download; Math Solver Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Math Solver Pro ships an update every 2 months, Doomsday calculator memory every 8 days. The most recent releases landed on September 16, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Math Solver Pro | Doomsday calculator memory |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/doomsday-calculator-memory/id6503307628/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 8 days** |
| Monetization | — | Free |
| Size | 11 MB | 4 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ALG Software Lab](https://appshunter.io/developer/1650561236) | [Joao Vianna](https://appshunter.io/developer/592830914) |

## What reviewers say

### Math Solver Pro

[App page](https://appshunter.io/ios/app/math-solver-pro/id6467880393)

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

**In-app purchases:** none


### Doomsday calculator memory

[App page](https://appshunter.io/ios/app/doomsday-calculator-memory/id6503307628)

Practice and memorize a method for quickly calculating the weekday of any given date. This app is based on John Conway's 1970 mathematical system, allowing you to test your abilities without external tools.

**Highlights:** Practice date calculations, Memorize weekday method, Based on John Conway's system, No external tools needed, Test your abilities

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Math Solver Pro free?

Math Solver Pro costs $4.99, with no in-app purchases.

### Is Doomsday calculator memory free?

Doomsday calculator memory is free to download, with no in-app purchases.

### Do Math Solver Pro or Doomsday calculator memory have ads?

Neither Math Solver Pro nor Doomsday calculator memory shows ads.

### Which is updated more often, Math Solver Pro or Doomsday calculator memory?

Math Solver Pro ships an update every 2 months, and Doomsday calculator memory every 8 days. Most recently, Math Solver Pro was updated on September 16, 2026 and Doomsday calculator memory on September 22, 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.*