# Emoncms vs Zap Panels

The clearest difference is in-app purchases: Emoncms at none against Zap Panels's 1. Emoncms also leads on iOS requirement (13.0 vs 17.0). Zap Panels's advantage is update cadence (every 3 weeks vs every 17 months). On price, ads and device support there is nothing between them.

Both are free to download. Zap Panels sells 1 one-off in-app purchase. Emoncms asks for nothing beyond the download.

Emoncms ships an update every 17 months, Zap Panels every 3 weeks. The most recent releases landed on November 2, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Emoncms | Zap Panels |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (5 ratings)](https://appshunter.io/ios/app/emoncms/id1169483587/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 36 MB | 15 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Megni](https://appshunter.io/developer/1169190655) | [William Lee](https://appshunter.io/developer/1893165176) |

## What reviewers say

### Emoncms

[App page](https://appshunter.io/ios/app/emoncms/id1169483587)

This application allows users to view energy, temperature, and environmental data dashboards from Emoncms servers. It is an open-source tool designed for processing, logging, and visualizing environmental information.

**Highlights:** View Emoncms dashboards, Supports MyElectric dashboards, Connects to emoncms.org, Connects to custom Emoncms servers, Open-source application, Visualizes energy data, Visualizes environmental data

**Features:** macOS Compatibility

**In-app purchases:** none


### Zap Panels

[App page](https://appshunter.io/ios/app/zap-panels/id6762159840)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zap Panels Premium | $4.99 | one-time |


## Frequently asked questions

### Is Emoncms free?

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

### Is Zap Panels free?

Zap Panels is free to download, with in-app purchases available.

### Do Emoncms or Zap Panels have ads?

Neither Emoncms nor Zap Panels shows ads.

### Which is updated more often, Emoncms or Zap Panels?

Emoncms ships an update every 17 months, and Zap Panels every 3 weeks. Most recently, Emoncms was updated on November 2, 2026 and Zap Panels on October 24, 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.*