# Emoncms vs MAP Energy

The clearest difference is review sentiment: MAP Energy at 100% against Emoncms's 56%. MAP Energy also leads on rating (5.0 vs 4.4) and update cadence (every 8 days vs every 17 months). Emoncms's advantage is in-app purchases (none vs 2) and ratings volume (5 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. MAP Energy sells 2 in-app purchases, starting at $3.99 per month. Emoncms asks for nothing beyond the download.

MAP Energy holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Emoncms has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 56% of Emoncms's written reviews are positive against 100% of MAP Energy's.

Emoncms ships an update every 17 months, MAP Energy every 8 days. The most recent releases landed on September 27, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Emoncms | MAP Energy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (5 ratings)](https://appshunter.io/ios/app/emoncms/id1169483587/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/map-energy/id6756628340/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 55.6% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 8 days** |
| Monetization | **Free** | Freemium |
| Size | 36 MB | 59 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Megni](https://appshunter.io/developer/1169190655) | [Aptica Limited](https://appshunter.io/developer/1861896570) |

## 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


### MAP Energy

[App page](https://appshunter.io/ios/app/map-energy/id6756628340)

Monitor and control your Tesla Powerwall energy usage with real-time data and historical performance tracking. Automate backup reserves and export behavior using intelligent tools.

**Highlights:** Live energy flow monitoring, Historical performance tracking, Automated backup reserve control, Intelligent export behavior automation, Tesla Powerwall integration

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $3.99 | per month |
| Premium Yearly | $39.99 | per year |


## Frequently asked questions

### Is Emoncms free?

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

### Is MAP Energy free?

MAP Energy is free to download, with in-app purchases available.

### Which has better reviews, Emoncms or MAP Energy?

MAP Energy is rated higher. Emoncms averages 4.4 out of 5 from 5 ratings, while MAP Energy averages 5.0 from 1 ratings.

### Do Emoncms or MAP Energy have ads?

Neither Emoncms nor MAP Energy shows ads.

### Which is updated more often, Emoncms or MAP Energy?

Emoncms ships an update every 17 months, and MAP Energy every 8 days. Most recently, Emoncms was updated on September 27, 2026 and MAP Energy on October 5, 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.*