Pace Ruler vs ATN Obsidian 4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pace Ruler
This tool uses GNSS to measure distances accurately on foot. Survey results can be viewed on an iOS map and shared easily. Customize units, calculation methods, and accuracy settings for precise measurements.
- GNSS distance surveying
- iOS map integration
- File sharing of results
- Customizable units (meter, foot)
- Multiple distance calculation methods
- Adjustable GNSS accuracy
- Automatic shut-off
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This simple tool utilizes GNSS (Global Navigation Satellite System) to survey distances on foot. The survey results, or tracking data, can be conveniently checked using an iOS map and are easily shareable via file sharing. Settings: - Remove Ads: This option removes ads via in-app purchase and displays a toolbar. - Units: Choose between meter, international foot, or U.S. survey foot. - Distance Calculation Methods: Options include iOS Default, Haversine, Hubeny (Simple Formula), Bowring, or Hubeny (Original). Bowring's method offers the best accuracy. - Reference Ellipsoid: Choose between WGS84 or GRS80. - GNSS Accuracy: Specify the allowed range of error. - Automatic Shut Off: If there's no movement for about 5 minutes, surveying will stop automatically. - Do Not Use Thumbnail: This option hides thumbnails. - Use Light Mode for Maps: The map is displayed in light mode even if you are using dark mode. Notice: Continued use of GNSS running in the background can dramatically decrease battery life.
ATN Obsidian 4
Connect your smartphone or tablet to compatible ATN smart scopes via WiFi. Stream live video of your hunt, adjust device settings, and review recorded images and videos. Unlock the full capabilities of your ATN optics.
- Live video streaming
- Device settings adjustment
- Review stored media
- WiFi connectivity
- Enhances ATN optic experience
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This is the Future of Optics! The Obsidian 4 application is here to enhance your experience when using the ATN X-Sight 4K and/or the ThOR 4 product lines. This application connects your smart phone, or tablet, to your ATN device via Wifi. This connection allows you to watch a live video stream of your hunt on your smart phone or tablet. The Obsidian 4 app lets you to adjust/change the various settings on your ATN Smart scope, and review the images and videos stored on your scopes microSD card. Download the Obsidian 4 app today and Unlock the true potential of your Obsidian 4 device! Note: This application is for owners of ATN products who are using the new Obsidian 4 products. This application does not support SMART HD Obsidian 2 legacy devices. If you have any questions, comments or concerns, please contact us via email.
Screenshots
Verdict
The clearest difference is rating: Pace Ruler at 2.6 against ATN Obsidian 4's 2.0. Pace Ruler also leads on review sentiment (39% vs 16%). ATN Obsidian 4's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Pace Ruler sells 1 one-off in-app purchase. ATN Obsidian 4 asks for nothing beyond the download.
Pace Ruler holds the better App Store score, 2.6 against 2.0. That said, the two scores are not equally well evidenced: ATN Obsidian 4 has 234 ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 39% of Pace Ruler's written reviews are positive against 16% of ATN Obsidian 4's.
Pace Ruler ships an update every 6 months, ATN Obsidian 4 every 3 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | Pace Ruler | ATN Obsidian 4 |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (15 ratings) — better | 2.0 (234 ratings) |
| Positive reviews | 39.3% of reviews — better | 16.0% of reviews |
| Number of ratings | 15 | 234 — better |
| Update frequency | Every 6 months | Every 3 months — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 5 MB | 85 MB |
| Age rating | 4+ | 4+ |
| Developer | Takafumi AMANO | ATN |
Customer experience
Pace Ruler
ATN Obsidian 4
Bugs and requests
Pace Ruler
Not enough reviews yet to summarise bugs or requests.
ATN Obsidian 4
Reported bugs
3 issues- App unable to discover scope
- Live view not working as expected
- Scope firmware updates causing issues
Requested features
3 requests- Add photo/video gallery to view media
- Improve app stability and reliability
- Allow profile editing directly on scope
In-app purchases
Pace Ruler
- Remove Ads$1.99
ATN Obsidian 4
No in-app purchases
Questions
Is Pace Ruler free?
Is ATN Obsidian 4 free?
Which has better reviews, Pace Ruler or ATN Obsidian 4?
Do Pace Ruler or ATN Obsidian 4 have ads?
Which is updated more often, Pace Ruler or ATN Obsidian 4?
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