# SolarPower Wi vs Construction Calc

The clearest difference is in-app purchases: SolarPower Wi at none against Construction Calc's 1. SolarPower Wi also leads on iOS requirement (11.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Construction Calc sells 1 one-off in-app purchase. SolarPower Wi asks for nothing beyond the download.

SolarPower Wi ships an update every 3 months, Construction Calc every 2 months. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | SolarPower Wi | Construction Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (35 ratings)](https://appshunter.io/ios/app/solarpower-wi-fi/id1491698936/reviews)** | — |
| Number of ratings | **35** | — |
| Positive reviews | 21.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 21 MB | 15 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [祥梯 孟](https://appshunter.io/developer/1070155084) | [Alona Nesterenko](https://appshunter.io/developer/1890650834) |

## What reviewers say

### SolarPower Wi

[App page](https://appshunter.io/ios/app/solarpower-wi-fi/id1491698936)

Monitor hybrid inverters via Wi-Fi module on your iOS device. View device status, configure settings, receive notifications for warnings or alarms, and record historical data.

**Highlights:** Monitor hybrid inverters, Wi-Fi module connectivity, Display device status, Configure device settings, Warning and alarm notifications, Record device data history

**Features:** macOS Compatibility

**In-app purchases:** none


### Construction Calc

[App page](https://appshunter.io/ios/app/construction-calc-toolbox/id6792015651)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $7.99 | one-time |


## Frequently asked questions

### Is SolarPower Wi free?

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

### Is Construction Calc free?

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

### Do SolarPower Wi or Construction Calc have ads?

Neither SolarPower Wi nor Construction Calc shows ads.

### Which is updated more often, SolarPower Wi or Construction Calc?

SolarPower Wi ships an update every 3 months, and Construction Calc every 2 months. Most recently, SolarPower Wi was updated on October 15, 2026 and Construction Calc on October 11, 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.*