# Span Installer vs Lunar Energy

The clearest difference is review sentiment: Lunar Energy at 100% against Span Installer's 0%. Lunar Energy also leads on rating (5.0 vs 3.7). On price, ratings volume, 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.

Lunar Energy holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 13 and 13 respectively. Written reviews point the same way: 0% of Span Installer's written reviews are positive against 100% of Lunar Energy's.

Span Installer ships an update fortnightly, Lunar Energy every 2 weeks. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Span Installer | Lunar Energy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (13 ratings)](https://appshunter.io/ios/app/span-installer/id1477128965/reviews) | **[5.0 (13 ratings)](https://appshunter.io/ios/app/lunar-energy/id6615061613/reviews)** |
| Number of ratings | 13 | 13 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 weeks |
| Monetization | Free | Free |
| Size | 104 MB | 83 MB |
| Requires iOS | 17.6 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Span.io, Inc](https://appshunter.io/developer/1477128844) | [Lunar Energy Limited](https://appshunter.io/developer/1400433604) |

## What reviewers say

### Span Installer

[App page](https://appshunter.io/ios/app/span-installer/id1477128965)

This app streamlines the installation and servicing of new and existing SPAN panels. It offers enhanced navigation, an improved breaker labeling process, and integrated troubleshooting support. Users can also confirm communications with battery systems and program setpoints for energy management.

**Highlights:** Faster new SPAN Panel commissioning, Simplified user navigation, Improved breaker labeling, Integrated troubleshooting and support, Confirm hardware communications, Program setpoints with SPAN PowerUp

**In-app purchases:** none


### Lunar Energy

[App page](https://appshunter.io/ios/app/lunar-energy/id6615061613)

Monitor your home's solar energy production, consumption, and storage in real-time. Gain confidence during power outages with backup duration estimates and maximize savings with automatic Lunar Mode. Participate in Virtual Power Plant programs to earn money.

**Highlights:** Real-time energy monitoring, Backup power duration estimates, Automatic savings optimization (Lunar Mode), Virtual Power Plant program enrollment, Energy usage reports

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

**In-app purchases:** none


## Frequently asked questions

### Is Span Installer free?

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

### Is Lunar Energy free?

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

### Which has better reviews, Span Installer or Lunar Energy?

Lunar Energy is rated higher. Span Installer averages 3.7 out of 5 from 13 ratings, while Lunar Energy averages 5.0 from 13 ratings.

### Do Span Installer or Lunar Energy have ads?

Neither Span Installer nor Lunar Energy shows ads.

### Which is updated more often, Span Installer or Lunar Energy?

Span Installer ships an update fortnightly, and Lunar Energy every 2 weeks. Most recently, Span Installer was updated on October 15, 2026 and Lunar Energy on October 7, 2026.

---

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