# SolarEdge Mapper vs MG J20

SolarEdge Mapper and MG J20 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

SolarEdge Mapper ships an update every 5 weeks, MG J20 every 6 weeks. The most recent releases landed on November 1, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | SolarEdge Mapper | MG J20 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (649 ratings)](https://appshunter.io/ios/app/solaredge-mapper/id432768469/reviews)** | — |
| Number of ratings | **649** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Monetization | Free | — |
| Size | 50 MB | 68 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SolarEdge Technologies](https://appshunter.io/developer/384374350) | [南京辉煌智行科技有限公司](https://appshunter.io/developer/1738384876) |

## What reviewers say

### SolarEdge Mapper

[App page](https://appshunter.io/ios/app/solaredge-mapper/id432768469)

Streamline new system registration for installers by mapping physical layouts directly within the cloud monitoring platform. Create, edit, and verify system layouts on-site, and easily scan and assign power optimizer serial numbers to their correct locations.

**Highlights:** Onsite system registration, System physical layout creation, Onsite layout editing, Onsite layout verification, Power optimizer serial number scanning, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- ✅ Seamless integration with Designer and monitoring apps
- 📱 Functional for onsite work
- 🎯 QR code scanning works well
- ⚡ Improved functionality in recent updates

**What reviewers complain about**

- 🐛 Excessive bugs and glitches throughout app
- ⏱️ Extremely slow loading times for sites
- 😕 Unintuitive and complicated user interface
- 🔧 Difficult setup and configuration process
- 📸 Camera/barcode scanning unreliable

**Reported bugs**

- Error 1001 when loading sites
- Site creation fails with errors
- Camera stops working for barcode scanning
- Endless loading screens when creating sites
- Invalid state validation errors in dropdown menus

**Requested features**

- iPad/tablet version of the app
- Ability to delete old sites and declutter home screen
- Array number option in array builder
- Easier scanning and array building process
- Customer/owner read-only access to mapper functions


### MG J20

[App page](https://appshunter.io/ios/app/mg-j20/id6748111740)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SolarEdge Mapper free?

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

### Is MG J20 free?

MG J20 is free to download, with no in-app purchases.

### Do SolarEdge Mapper or MG J20 have ads?

Neither SolarEdge Mapper nor MG J20 shows ads.

### Which is updated more often, SolarEdge Mapper or MG J20?

SolarEdge Mapper ships an update every 5 weeks, and MG J20 every 6 weeks. Most recently, SolarEdge Mapper was updated on November 1, 2026 and MG J20 on November 8, 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.*