# VoltSense vs Map Memos

The clearest difference is in-app purchases: VoltSense at none against Map Memos's 1. VoltSense also leads on device support (3 vs 1) and iOS requirement (15.6 vs 18.0). Map Memos's advantage is update cadence (every 3 days vs every 6 months). On price and ads there is nothing between them.

Both are free to download. Map Memos sells 1 in-app purchase, starting at $9.99 per year. VoltSense asks for nothing beyond the download.

VoltSense ships an update every 6 months, Map Memos every 3 days. The most recent releases landed on October 24, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | VoltSense | Map Memos |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/map-memos-location-notes/id6661034128/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 80 MB | 30 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Purpletail OU](https://appshunter.io/developer/1761328539) | [Minima Software](https://appshunter.io/developer/352283598) |

## What reviewers say

### VoltSense

[App page](https://appshunter.io/ios/app/voltsense/id6621183757)

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

**In-app purchases:** none


### Map Memos

[App page](https://appshunter.io/ios/app/map-memos-location-notes/id6661034128)

Pin locations on a map and add custom notes to them. Easily share annotated maps with others for travel planning, local guides, property management, and more. Organize your world geographically with custom icons and offline access.

**Highlights:** Tap and add notes to map locations, Create custom points of interest, Share annotated maps easily, Categorize notes with customizable icons, Offline access to notes, Plan trips and record memories, Create personalized city guides

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $9.99 | per year |


## Frequently asked questions

### Is VoltSense free?

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

### Is Map Memos free?

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

### Do VoltSense or Map Memos have ads?

Neither VoltSense nor Map Memos shows ads.

### Which is updated more often, VoltSense or Map Memos?

VoltSense ships an update every 6 months, and Map Memos every 3 days. Most recently, VoltSense was updated on October 24, 2026 and Map Memos 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.*