# PM Sim vs Pre

The clearest difference is update cadence: PM Sim at every 4 days against Pre's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PM Sim sells 3 one-off in-app purchases and Pre sells 1 in-app purchase, starting at $14.99 per year. Whichever you choose, the download price is not the number that matters.

PM Sim ships an update every 4 days, Pre monthly. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | PM Sim | Pre |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Monthly |
| Size | 2 MB | 6 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mark Brown](https://appshunter.io/developer/1355221098) | [JABA Learning LLC](https://appshunter.io/developer/1892700977) |

## What reviewers say

### PM Sim

[App page](https://appshunter.io/ios/app/pm-sim/id6762046617)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Blue Print Pack | $4.99 | one-time |
| Deliver Pack | $4.99 | one-time |
| Complete Pack | $7.99 | one-time |


### Pre

[App page](https://appshunter.io/ios/app/pre-algebra-tutor/id6800429487)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pre-Algebra Tutor Premium | $14.99 | per year |


## Frequently asked questions

### Is PM Sim free?

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

### Is Pre free?

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

### Do PM Sim or Pre have ads?

Neither PM Sim nor Pre shows ads.

### Which is updated more often, PM Sim or Pre?

PM Sim ships an update every 4 days, and Pre monthly. Most recently, PM Sim was updated on October 7, 2026 and Pre on October 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.*