# Nova for physics vs Xplain

The clearest difference is update cadence: Xplain at every 9 days against Nova for physics's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Nova for physics sells 1 one-off in-app purchase and Xplain sells 3 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

Nova for physics ships an update monthly, Xplain every 9 days. The most recent releases landed on October 3, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Nova for physics | Xplain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Size | 112 MB | 94 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ibrahim Ahmed](https://appshunter.io/developer/1683023823) | [Shebang Labs OÜ](https://appshunter.io/developer/1832492400) |

## What reviewers say

### Nova for physics

[App page](https://appshunter.io/ios/app/nova-for-physics/id6670272369)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Product Tier 10114 | $0.99 | one-time |


### Xplain

[App page](https://appshunter.io/ios/app/xplain/id6761678978)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ask Xplore Monthly | $14.99 | per month |
| Ask Xplore Semi Annual | $49.99 | per 6 months |
| Ask Xplore Annual | $69.99 | per year |


## Frequently asked questions

### Is Nova for physics free?

Nova for physics is free to download, with in-app purchases available.

### Is Xplain free?

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

### Do Nova for physics or Xplain have ads?

Neither Nova for physics nor Xplain shows ads.

### Which is updated more often, Nova for physics or Xplain?

Nova for physics ships an update monthly, and Xplain every 9 days. Most recently, Nova for physics was updated on October 3, 2026 and Xplain on October 24, 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.*