# elumen vs Gould Instruments

The clearest difference is update cadence: elumen at every 3 weeks against Gould Instruments's every 6 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

elumen ships an update every 3 weeks, Gould Instruments every 6 months. The most recent releases landed on September 15, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | elumen | Gould Instruments |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 months |
| Size | 72 MB | 66 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [WBS Technology](https://appshunter.io/developer/1375805672) | [Gould Instruments Pty Ltd](https://appshunter.io/developer/1613625674) |

## What reviewers say

### elumen

[App page](https://appshunter.io/ios/app/elumen/id1518147122)

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

**In-app purchases:** none


### Gould Instruments

[App page](https://appshunter.io/ios/app/gould-instruments/id1613625672)

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

**In-app purchases:** none


## Frequently asked questions

### Is elumen free?

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

### Is Gould Instruments free?

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

### Do elumen or Gould Instruments have ads?

Neither elumen nor Gould Instruments shows ads.

### Which is updated more often, elumen or Gould Instruments?

elumen ships an update every 3 weeks, and Gould Instruments every 6 months. Most recently, elumen was updated on September 15, 2026 and Gould Instruments on September 10, 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.*