# UltiCloud vs Fill Storage Pro

The clearest difference is ads: UltiCloud at none against Fill Storage Pro's shown. UltiCloud also leads on update cadence (every 5 days vs every 2 months) and monetization model (free vs ad-supported). On price, rating, ratings volume and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for UltiCloud against 5.0 for Fill Storage Pro. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UltiCloud ships an update every 5 days, Fill Storage Pro every 2 months. The most recent releases landed on November 5, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | UltiCloud | Fill Storage Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/ulticloud/id6748047196/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/fill-storage-pro/id6755057653/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 2 months |
| Monetization | **Free** | Ad-supported |
| Size | 118 MB | 13 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shen zhen ACE Battery Co,Ltd](https://appshunter.io/developer/1750410878) | [Arum Communications Corp.](https://appshunter.io/developer/1851627253) |

## What reviewers say

### UltiCloud

[App page](https://appshunter.io/ios/app/ulticloud/id6748047196)

This platform integrates PV, battery storage, EV charging, and heat pump control into a single AI-powered hub. Monitor energy flow, optimize efficiency, and adjust production and consumption with real-time visualization and intelligent automation. Make smarter energy decisions with natural language interaction and predictive insights.

**Highlights:** Integrated PV, battery, EV charging, and heat pump control, Real-time energy flow visualization, Configurable operation modes (self-consumption, TOU, etc.), AI-driven automation and optimization, Natural language device interaction, Predictive energy generation and weather insights

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

**In-app purchases:** none


### Fill Storage Pro

[App page](https://appshunter.io/ios/app/fill-storage-pro/id6755057653)

This utility app helps users simulate low storage conditions for testing or securely erase deleted data by filling device storage with dummy files. It offers customizable filling options and easy cleanup.

**Highlights:** Low storage simulation for testing, Securely overwrite deleted data, Customizable storage filling (fixed sizes/percentage), One-tap cleanup of generated files, Ideal for developers and testers

**In-app purchases:** none


## Frequently asked questions

### Is UltiCloud free?

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

### Is Fill Storage Pro free?

Fill Storage Pro is free to download, with no in-app purchases.

### Which has better reviews, UltiCloud or Fill Storage Pro?

UltiCloud and Fill Storage Pro are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do UltiCloud or Fill Storage Pro have ads?

Fill Storage Pro shows ads; UltiCloud does not.

### Which is updated more often, UltiCloud or Fill Storage Pro?

UltiCloud ships an update every 5 days, and Fill Storage Pro every 2 months. Most recently, UltiCloud was updated on November 5, 2026 and Fill Storage Pro on October 30, 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.*