# MasterPlan AR vs 21energy

The clearest difference is in-app purchases: 21energy at none against MasterPlan AR's 1. 21energy also leads on update cadence (fortnightly vs every 3 months). MasterPlan AR's advantage is review sentiment (33% vs 17%) and iOS requirement (11.4 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. MasterPlan AR sells 1 in-app purchase, starting at $4.49 per year. 21energy asks for nothing beyond the download.

MasterPlan AR ships an update every 3 months, 21energy fortnightly. The most recent releases landed on October 5, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | MasterPlan AR | 21energy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/masterplan-ar/id1443757987/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **33.3% of reviews** | 16.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 16 MB | 43 MB |
| Requires iOS | **11.4** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ziemann.IT](https://appshunter.io/developer/556846201) | [21energy GmbH](https://appshunter.io/developer/1741551485) |

## What reviewers say

### MasterPlan AR

[App page](https://appshunter.io/ios/app/masterplan-ar/id1443757987)

Streamline your construction business with this app that simplifies on-site measurements and cost estimations. Generate professional offers and send them to clients directly from the job site, saving valuable time.

**Highlights:** On-site object measurement, Automated cost estimate creation, Direct email sending of estimates, Unlimited materials, projects, and rooms (Pro), Cloud sync between devices (Pro), Ad-free experience (Pro)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MasterPlan Pro | $4.49 | per year |


### 21energy

[App page](https://appshunter.io/ios/app/21energy/id6497953701)

Easily set up and configure your Ofen and Ofen Pro heaters. Connect your device via Bluetooth to your local WiFi and manage your mining pool settings with just a few taps.

**Highlights:** Easy setup and configuration, Bluetooth connectivity, WiFi connection, Mining pool configuration, Ofen and Ofen Pro support

**In-app purchases:** none


## Frequently asked questions

### Is MasterPlan AR free?

MasterPlan AR is free to download, with in-app purchases available.

### Is 21energy free?

21energy is free to download, with no in-app purchases.

### Do MasterPlan AR or 21energy have ads?

Neither MasterPlan AR nor 21energy shows ads.

### Which is updated more often, MasterPlan AR or 21energy?

MasterPlan AR ships an update every 3 months, and 21energy fortnightly. Most recently, MasterPlan AR was updated on October 5, 2026 and 21energy on October 3, 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.*