# FDS Altis vs Renogy

FDS Altis and Renogy both sit at 3.9 stars, but that hides the real split: 40% of FDS Altis's written reviews are positive against 11% of Renogy's. Renogy's advantage is ratings volume (824 vs 10) and iOS requirement (13.0 vs 26.2). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 3.9 for FDS Altis against 3.8 for Renogy. That said, the two scores are not equally well evidenced: Renogy has 824 ratings behind it against 10, so its average is the more settled of the two. Written reviews are what separate them: 40% of FDS Altis's written reviews are positive against 11% of Renogy's.

FDS Altis ships an update every 3 weeks, Renogy every 2 weeks. The most recent releases landed on October 19, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | FDS Altis | Renogy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (10 ratings)](https://appshunter.io/ios/app/fds-altis/id1254991988/reviews)** | [3.8 (824 ratings)](https://appshunter.io/ios/app/renogy/id1495327014/reviews) |
| Number of ratings | 10 | **824** |
| Positive reviews | **40.0% of reviews** | 10.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 16 MB | 74 MB |
| Requires iOS | 26.2 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Casey Mongoven](https://appshunter.io/developer/1254991987) | [Renogy Suzhou Co.,Ltd.](https://appshunter.io/developer/1490992894) |

## What reviewers say

### FDS Altis

[App page](https://appshunter.io/ios/app/fds-altis/id1254991988)

Access the instructional manual for your product and connect to the system. By using this application, you agree to the Terms of Service and Privacy Policy.

**Highlights:** Product instructional manual access, System connection, Terms of Service agreement, Privacy Policy agreement

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

**In-app purchases:** none


### Renogy

[App page](https://appshunter.io/ios/app/renogy/id1495327014)

Monitor your off-grid solar energy systems in real-time, configure devices remotely, and connect with a community of solar enthusiasts. Share your DIY projects, learn from others, and access exclusive promotions and rewards.

**Highlights:** Real-time energy monitoring, Device settings configuration, Online DIY learning and sharing, Exclusive rewards and promotions, Access to online store

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to set up and configure
- 🚀 Plug and go functionality
- 🔋 Decent battery monitoring

**What reviewers complain about**

- 🐛 Frequent connectivity issues
- 🔍 Inaccurate or missing data
- 📱 Requires internet connection to function
- 🤖 Overly complex UI with unnecessary features

**Reported bugs**

- App crashes on launch after updates
- Login/account creation issues
- Bluetooth pairing problems

**Requested features**

- Detailed battery health and usage history
- Customizable alerts and notifications
- Apple Watch support
- Offline mode for remote monitoring


## Frequently asked questions

### Is FDS Altis free?

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

### Is Renogy free?

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

### Which has better reviews, FDS Altis or Renogy?

FDS Altis is rated higher. FDS Altis averages 3.9 out of 5 from 10 ratings, while Renogy averages 3.8 from 824 ratings.

### Do FDS Altis or Renogy have ads?

Neither FDS Altis nor Renogy shows ads.

### Which is updated more often, FDS Altis or Renogy?

FDS Altis ships an update every 3 weeks, and Renogy every 2 weeks. Most recently, FDS Altis was updated on October 19, 2026 and Renogy on October 26, 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.*