# Digital Documentation vs NeRV

The clearest difference is ads: Digital Documentation at none against NeRV's shown. Digital Documentation also leads on iOS requirement (11.0 vs 15.0). NeRV's advantage is update cadence (every 8 months vs every 37 months). On price, 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.

Digital Documentation ships an update every 37 months, NeRV every 8 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Digital Documentation | NeRV |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 37 months | **Every 8 months** |
| Size | 122 MB | 857 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Historic Environment Scotland](https://appshunter.io/developer/1240194863) | [Digitalnauts Limited](https://appshunter.io/developer/1653192283) |

## What reviewers say

### Digital Documentation

[App page](https://appshunter.io/ios/app/digital-documentation/id1246843208)

**Features:** macOS Compatibility

**In-app purchases:** none


### NeRV

[App page](https://appshunter.io/ios/app/nerv-futures-close/id6482481951)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Digital Documentation free?

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

### Is NeRV free?

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

### Do Digital Documentation or NeRV have ads?

NeRV shows ads; Digital Documentation does not.

### Which is updated more often, Digital Documentation or NeRV?

Digital Documentation ships an update every 37 months, and NeRV every 8 months. Most recently, Digital Documentation was updated on November 2, 2026 and NeRV on November 4, 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.*