# Evergen vs BPI Calc

The clearest difference is in-app purchases: Evergen at none against BPI Calc's 1. BPI Calc's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. BPI Calc sells 1 in-app purchase, starting at $299.99 per year. Evergen asks for nothing beyond the download.

Evergen ships an update every 2 months, BPI Calc every 3 weeks. The most recent releases landed on September 27, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Evergen | BPI Calc |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 14.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 165 MB | 40 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Pacific 2022 Bidco C Pty Limited](https://appshunter.io/developer/1160577601) | [The CM Group.net Pty Ltd](https://appshunter.io/developer/1787544551) |

## What reviewers say

### Evergen

[App page](https://appshunter.io/ios/app/evergen/id1160577602)

Optimize and monitor your renewable energy system's performance. Set energy usage goals, track power generation and consumption, and align savings with your billing cycles. Take control of energy costs and reduce environmental impact.

**Highlights:** Set energy usage goals, Monitor power generation and usage, Track solar, battery, and home performance, Synchronize usage with bill cycles, Optimize system performance

**Features:** macOS Compatibility

**In-app purchases:** none


### BPI Calc

[App page](https://appshunter.io/ios/app/bpi-calc/id6739940689)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BPI Calc Pro Annual | $299.99 | per year |


## Frequently asked questions

### Is Evergen free?

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

### Is BPI Calc free?

BPI Calc is free to download, with in-app purchases available.

### Do Evergen or BPI Calc have ads?

Neither Evergen nor BPI Calc shows ads.

### Which is updated more often, Evergen or BPI Calc?

Evergen ships an update every 2 months, and BPI Calc every 3 weeks. Most recently, Evergen was updated on September 27, 2026 and BPI Calc on September 12, 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.*