# xMemory vs Impact!

The clearest difference is in-app purchases: xMemory at none against Impact!'s 1. xMemory also leads on iOS requirement (8.0 vs 26.0). Impact!'s advantage is update cadence (fortnightly vs every 10 months). On price, ads and device support there is nothing between them.

Both are free to download. Impact! sells 1 one-off in-app purchase. xMemory asks for nothing beyond the download.

xMemory ships an update every 10 months, Impact! fortnightly. The most recent releases landed on October 4, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | xMemory | Impact! |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Fortnightly** |
| Size | 23 MB | 13 MB |
| Requires iOS | **8.0** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 17+ |
| Developer | [Biltema](https://appshunter.io/developer/435084109) | [Audun Kjelstrup](https://appshunter.io/developer/989920958) |

## What reviewers say

### xMemory

[App page](https://appshunter.io/ios/app/xmemory/id1117896927)

**Features:** macOS Compatibility

**In-app purchases:** none


### Impact!

[App page](https://appshunter.io/ios/app/impact-ballistic-calculator/id6476831891)

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Impact! Pro | $14.99 | one-time |


## Frequently asked questions

### Is xMemory free?

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

### Is Impact! free?

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

### Do xMemory or Impact! have ads?

Neither xMemory nor Impact! shows ads.

### Which is updated more often, xMemory or Impact!?

xMemory ships an update every 10 months, and Impact! fortnightly. Most recently, xMemory was updated on October 4, 2026 and Impact! on October 21, 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.*