# NMAJS Parent vs Or Simplex Step

The clearest difference is in-app purchases: NMAJS Parent at none against Or Simplex Step's 1. NMAJS Parent also leads on ads (none vs shown). Or Simplex Step's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Or Simplex Step sells 1 one-off in-app purchase. NMAJS Parent asks for nothing beyond the download.

NMAJS Parent ships an update every 3 weeks, Or Simplex Step every 10 days. The most recent releases landed on October 30, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | NMAJS Parent | Or Simplex Step |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Size | 54 MB | 45 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MICM Net Solutions Pvt Ltd](https://appshunter.io/developer/922883900) | [Bohdan Bezpartochnyi](https://appshunter.io/developer/1850325090) |

## What reviewers say

### NMAJS Parent

[App page](https://appshunter.io/ios/app/nmajs-parent/id6747288070)

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

**In-app purchases:** none


### Or Simplex Step

[App page](https://appshunter.io/ios/app/or-simplex-step-by-step-solver/id6816232479)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OR Commented Pro | $2.99 | one-time |


## Frequently asked questions

### Is NMAJS Parent free?

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

### Is Or Simplex Step free?

Or Simplex Step is free to download, with in-app purchases available.

### Do NMAJS Parent or Or Simplex Step have ads?

Or Simplex Step shows ads; NMAJS Parent does not.

### Which is updated more often, NMAJS Parent or Or Simplex Step?

NMAJS Parent ships an update every 3 weeks, and Or Simplex Step every 10 days. Most recently, NMAJS Parent was updated on October 30, 2026 and Or Simplex Step on November 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.*