# HydraGO vs Emlid Flow

The clearest difference is in-app purchases: HydraGO at none against Emlid Flow's 1. HydraGO also leads on iOS requirement (9.0 vs 16.0). Emlid Flow's advantage is update cadence (every 10 days vs every 24 months). On price, ads and device support there is nothing between them.

Both are free to download. Emlid Flow sells 1 in-app purchase, starting at $24.99 per month. HydraGO asks for nothing beyond the download.

HydraGO ships an update every 24 months, Emlid Flow every 10 days. The most recent releases landed on October 17, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | HydraGO | Emlid Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.9 (36 ratings)](https://appshunter.io/ios/app/emlid-flow/id1463967138/reviews)** |
| Number of ratings | — | **36** |
| Positive reviews | — | 55.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 10 days** |
| Monetization | — | Freemium |
| Size | 5 MB | 205 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Stevens Water Monitoring Systems, Inc.](https://appshunter.io/developer/503634320) | [Emlid Tech Kft.](https://appshunter.io/developer/1619099925) |

## What reviewers say

### HydraGO

[App page](https://appshunter.io/ios/app/hydrago/id1435520710)

**Features:** macOS Compatibility

**In-app purchases:** none


### Emlid Flow

[App page](https://appshunter.io/ios/app/emlid-flow/id1463967138)

Manage Emlid Reach receivers and perform positioning tasks like data collection and mapping. Offers free and pro plans for various survey workflows, with cloud sync and team collaboration features.

**Highlights:** Receiver management (base/rover setup), RTK/PPK configuration, Point collection and stakeout, Import/export various file formats, Coordinate system library, Cloud sync with Emlid Flow 360, Team collaboration

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Plan Individual Monthly | $24.99 | per month |


## Frequently asked questions

### Is HydraGO free?

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

### Is Emlid Flow free?

Emlid Flow is free to download, with in-app purchases available.

### Do HydraGO or Emlid Flow have ads?

Neither HydraGO nor Emlid Flow shows ads.

### Which is updated more often, HydraGO or Emlid Flow?

HydraGO ships an update every 24 months, and Emlid Flow every 10 days. Most recently, HydraGO was updated on October 17, 2026 and Emlid Flow on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*