# ERIS Mobile vs NAV Drone

The clearest difference is review sentiment: ERIS Mobile at 100% against NAV Drone's 51%. NAV Drone's advantage is rating (4.5 vs 4.3) and ratings volume (24 vs 6). 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.

NAV Drone holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 6 and 24 respectively. Written reviews complicate that: 100% of ERIS Mobile's written reviews are positive against 51% of NAV Drone's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 26, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | ERIS Mobile | NAV Drone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (6 ratings)](https://appshunter.io/ios/app/eris-mobile/id1478421653/reviews) | **[4.5 (24 ratings)](https://appshunter.io/ios/app/nav-drone/id1541014888/reviews)** |
| Number of ratings | 6 | **24** |
| Positive reviews | **100.0% of reviews** | 50.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Free | Free |
| Size | 26 MB | 356 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Environmental Risk Information Services ERIS](https://appshunter.io/developer/1478421652) | [NAV Canada](https://appshunter.io/developer/1541014890) |

## What reviewers say

### ERIS Mobile

[App page](https://appshunter.io/ios/app/eris-mobile/id1478421653)

This app helps environmental professionals conduct site visits for property due diligence. It allows users to capture photos, record notes, complete checklists, and access environmental data and historical maps related to a project.

**Highlights:** Site visit data capture, Photo and field note recording, Checklist completion, Interactive environmental data display, Access to historical maps, Property and surrounding area data

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

**In-app purchases:** none


### NAV Drone

[App page](https://appshunter.io/ios/app/nav-drone/id1541014888)

This app helps drone pilots in Canada fly safely and legally. It provides airspace information, allows flight planning, and automates authorization requests for controlled airspace.

**Highlights:** Airspace information, Flight planning, Flight authorization, Controlled airspace guidance, Automatic authorization responses

**In-app purchases:** none

**What reviewers like**

- 🚀 Fast flight authorization approval process
- 👍 Well-designed interface for beginners
- 📍 Helpful for compliance with airspace regulations
- ✅ Excellent customer support response times
- 🎯 Clear flight restriction information

**What reviewers complain about**

- 🔐 Constant forced logout requiring repeated login
- 🗺️ Difficult map drawing and zone boundary adjustment
- 🐛 Frequent app crashes and instability
- ❌ Inaccurate drone weight/model restrictions
- 🔄 Inconsistent airspace restriction information

**Reported bugs**

- App logs out constantly, sometimes mid-session
- Pilot license documents not saving/persisting
- Login credentials not retained between sessions
- App crashes during launch and landing functions
- Cannot save new flight areas

**Requested features**

- Biometric login (Face ID/fingerprint authentication)
- Remember email address on login screen
- Save default drone and flight operation preferences
- Numeric keypad for altitude and distance input instead of sliders
- Built-in NOTAM advisory information


## Frequently asked questions

### Is ERIS Mobile free?

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

### Is NAV Drone free?

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

### Which has better reviews, ERIS Mobile or NAV Drone?

NAV Drone is rated higher. ERIS Mobile averages 4.3 out of 5 from 6 ratings, while NAV Drone averages 4.5 from 24 ratings.

### Do ERIS Mobile or NAV Drone have ads?

Neither ERIS Mobile nor NAV Drone shows ads.

### Which is updated more often, ERIS Mobile or NAV Drone?

ERIS Mobile ships an update every 4 months, and NAV Drone every 4 months. Most recently, ERIS Mobile was updated on October 26, 2026 and NAV Drone on October 22, 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.*