# Velocity Pro vs Magnetometer ∞

The clearest difference is ads: Velocity Pro at none against Magnetometer ∞'s shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Velocity Pro sells 1 one-off in-app purchase and Magnetometer ∞ sells 2 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on September 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Velocity Pro | Magnetometer ∞ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (58 ratings)](https://appshunter.io/ios/app/magnetometer/id6753061844/reviews)** |
| Number of ratings | — | **58** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 16 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [alitasoft](https://appshunter.io/developer/1602244146) | [Fawkes Wei](https://appshunter.io/developer/432767536) |

## What reviewers say

### Velocity Pro

[App page](https://appshunter.io/ios/app/velocity-pro/id6751172567)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Expert Mode | $1.99 | one-time |


### Magnetometer ∞

[App page](https://appshunter.io/ios/app/magnetometer/id6753061844)

Visualize magnetic fields in real-time with precision charts and monitor X, Y, Z axis readings. Ideal for scientific research, education, and field work, this app offers professional-grade accuracy and an intuitive interface for easy data interpretation.

**Highlights:** Real-time magnetic field visualization, X, Y, Z axis readings in microteslas, Scientific research tool, Educational aid, Field work companion, Intuitive interface

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Velocity Pro free?

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

### Is Magnetometer ∞ free?

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

### Do Velocity Pro or Magnetometer ∞ have ads?

Magnetometer ∞ shows ads; Velocity Pro does not.

### Which is updated more often, Velocity Pro or Magnetometer ∞?

Velocity Pro ships an update every 2 weeks, and Magnetometer ∞ every 2 weeks. Most recently, Velocity Pro was updated on September 24, 2026 and Magnetometer ∞ on October 11, 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.*