# Subsurface Maps Offline vs Accupulse

The clearest difference is iOS requirement: Accupulse at 13.0 against Subsurface Maps Offline's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Subsurface Maps Offline ships an update every 4 weeks, Accupulse every 3 weeks. The most recent releases landed on September 16, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Subsurface Maps Offline | Accupulse |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/subsurface-maps-offline/id6654924764/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 81 MB | 35 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ben Hill](https://appshunter.io/developer/1645876200) | [S.J. ELECTRO SYSTEMS, INC.](https://appshunter.io/developer/1091625289) |

## What reviewers say

### Subsurface Maps Offline

[App page](https://appshunter.io/ios/app/subsurface-maps-offline/id6654924764)

Access and edit your maps offline on your iOS device. Download maps from the cloud, make changes, and mark new points. Sync your edits back to the cloud for team access.

**Highlights:** Download maps for offline use, View and edit map features, Mark new points, Sync changes to the cloud, Turn map layers on/off

**In-app purchases:** none


### Accupulse

[App page](https://appshunter.io/ios/app/accupulse/id6756187339)

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

**In-app purchases:** none


## Frequently asked questions

### Is Subsurface Maps Offline free?

Subsurface Maps Offline is free to download, with no in-app purchases.

### Is Accupulse free?

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

### Do Subsurface Maps Offline or Accupulse have ads?

Neither Subsurface Maps Offline nor Accupulse shows ads.

### Which is updated more often, Subsurface Maps Offline or Accupulse?

Subsurface Maps Offline ships an update every 4 weeks, and Accupulse every 3 weeks. Most recently, Subsurface Maps Offline was updated on September 16, 2026 and Accupulse on September 15, 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.*