# ATN Obsidian 4 vs FeedSync Timer

The clearest difference is review sentiment: FeedSync Timer at 100% against ATN Obsidian 4's 16%. FeedSync Timer also leads on rating (5.0 vs 2.0) and iOS requirement (9.0 vs 15.0). ATN Obsidian 4's advantage is ratings volume (227 vs 4). 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.

FeedSync Timer holds the better App Store score, 5.0 against 2.0. That said, the two scores are not equally well evidenced: ATN Obsidian 4 has 227 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 16% of ATN Obsidian 4's written reviews are positive against 100% of FeedSync Timer's.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 8, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | ATN Obsidian 4 | FeedSync Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (227 ratings)](https://appshunter.io/ios/app/atn-obsidian-4/id1337731256/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/feedsync-timer/id1404140526/reviews)** |
| Number of ratings | **227** | 4 |
| Positive reviews | 16.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free | Free |
| Size | 85 MB | 3 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ATN](https://appshunter.io/developer/789970891) | [All Seasons Feeders INC](https://appshunter.io/developer/1484531460) |

## What reviewers say

### ATN Obsidian 4

[App page](https://appshunter.io/ios/app/atn-obsidian-4/id1337731256)

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.

**Highlights:** Live video streaming, Device settings adjustment, Review stored media, WiFi connectivity, Enhances ATN optic experience

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Fast live streaming
- 👍 Easy scope configuration
- 🔍 Useful viewfinder feature

**What reviewers complain about**

- 🐛 Frequent connection issues
- 🐛 App crashes and freezes
- 🐛 Unreliable video/photo gallery
- 🐛 Scope locking up when using app

**Reported bugs**

- App unable to discover scope
- Live view not working as expected
- Scope firmware updates causing issues

**Requested features**

- Add photo/video gallery to view media
- Improve app stability and reliability
- Allow profile editing directly on scope


### FeedSync Timer

[App page](https://appshunter.io/ios/app/feedsync-timer/id1404140526)

Control and monitor your feeder timer remotely from your mobile device. Manage charging, program multiple feeding schedules, and receive real-time feedback on battery, solar, and feed functions without needing cellular or internet service.

**Highlights:** Charge management for solar panels, Program multiple feed schedules, Test and remotely activate timer, Battery voltage feedback, Solar panel function monitoring, Feed function monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ATN Obsidian 4 free?

ATN Obsidian 4 is free to download, with no in-app purchases.

### Is FeedSync Timer free?

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

### Which has better reviews, ATN Obsidian 4 or FeedSync Timer?

FeedSync Timer is rated higher. ATN Obsidian 4 averages 2.0 out of 5 from 227 ratings, while FeedSync Timer averages 5.0 from 4 ratings.

### Do ATN Obsidian 4 or FeedSync Timer have ads?

Neither ATN Obsidian 4 nor FeedSync Timer shows ads.

### Which is updated more often, ATN Obsidian 4 or FeedSync Timer?

ATN Obsidian 4 ships an update every 3 months, and FeedSync Timer every 3 months. Most recently, ATN Obsidian 4 was updated on October 8, 2026 and FeedSync Timer on September 30, 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.*