# ALLWEI vs Wallpaper Roll Calculator

The clearest difference is in-app purchases: ALLWEI at none against Wallpaper Roll Calculator's 3. ALLWEI also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Wallpaper Roll Calculator sells 3 in-app purchases, starting at $4.99 per 7 days. ALLWEI asks for nothing beyond the download.

ALLWEI ships an update every 3 weeks, Wallpaper Roll Calculator every 6 weeks. The most recent releases landed on October 25, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | ALLWEI | Wallpaper Roll Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (3 ratings)](https://appshunter.io/ios/app/allwei/id6743263657/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free | — |
| Size | 83 MB | 12 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Shenzhen Aowei Electronics Co., Ltd.](https://appshunter.io/developer/1802093434) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### ALLWEI

[App page](https://appshunter.io/ios/app/allwei/id6743263657)

This utility app uses AI to optimize energy consumption and track real-time prices for potential savings. It offers 3D visualization for managing photovoltaic dispatch, shifting peak loads, and controlling emergency functions.

**Highlights:** AI adaptive energy optimization, Real-time energy price tracking, 3D visualization for energy management, PV dispatch optimization, Peak load shifting, Emergency control functions

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Wallpaper Roll Calculator

[App page](https://appshunter.io/ios/app/wallpaper-roll-calculator/id6772282265)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Yearly | $24.99 | per year |
| Lifetime Pro | $49.99 | one-time |


## Frequently asked questions

### Is ALLWEI free?

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

### Is Wallpaper Roll Calculator free?

Wallpaper Roll Calculator is free to download, with in-app purchases available.

### Do ALLWEI or Wallpaper Roll Calculator have ads?

Neither ALLWEI nor Wallpaper Roll Calculator shows ads.

### Which is updated more often, ALLWEI or Wallpaper Roll Calculator?

ALLWEI ships an update every 3 weeks, and Wallpaper Roll Calculator every 6 weeks. Most recently, ALLWEI was updated on October 25, 2026 and Wallpaper Roll Calculator on October 16, 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.*