# Hydro vs Tracesmap

The clearest difference is update cadence: Tracesmap at fortnightly against Hydro's monthly. Tracesmap also leads on iOS requirement (18.6 vs 26.0). 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.

Hydro ships an update monthly, Tracesmap fortnightly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Hydro | Tracesmap |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tracesmap/id6759117548/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | — | Free |
| Size | 9 MB | 11 MB |
| Requires iOS | 26.0 | **18.6** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Patrick](https://appshunter.io/developer/385768716) | [Tracestrack Map Service](https://appshunter.io/developer/1015383535) |

## What reviewers say

### Hydro

[App page](https://appshunter.io/ios/app/hydro-aquatic-data-hub/id6477622181)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Tracesmap

[App page](https://appshunter.io/ios/app/tracesmap/id6759117548)

Record GPS tracks and contribute to OpenStreetMap by editing points of interest. Improve the world's free map by uploading your journeys and adding/editing map data directly from your mobile device.

**Highlights:** Record GPX traces, Direct OpenStreetMap upload, Add and edit POIs, Live dashboard with stats, Multiple map styles, Background recording, Cloud sync

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

**In-app purchases:** none


## Frequently asked questions

### Is Hydro free?

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

### Is Tracesmap free?

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

### Do Hydro or Tracesmap have ads?

Neither Hydro nor Tracesmap shows ads.

### Which is updated more often, Hydro or Tracesmap?

Hydro ships an update monthly, and Tracesmap fortnightly. Most recently, Hydro was updated on October 30, 2026 and Tracesmap on October 28, 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.*