umbrelOS vs ZimaOS
umbrelOS and ZimaOS overlap: both have a one-click app store, both have a built-in photo library and both offer local AI apps. Pick umbrelOS if you want to run it on a Raspberry Pi.
umbrelOS or ZimaOS: which should you pick?
Built from the facts below. Neither is “best” for everyone; it comes down to your drives, budget and how much you want to learn.
Pick umbrelOS if…
- You want to run it on a Raspberry Pi
Anyone who wants a beautiful home cloud with local AI and doesn’t need advanced storage.
umbrelOS full profilePick ZimaOS if…
umbrelOS matches ZimaOS on our feature list, so pick ZimaOS if these strengths matter more to you:
- Polished, phone-like interface made for non-experts
- Built-in photo library with on-device AI search
- Free for small setups; Plus is a one-time $29
Families who want a good-looking photo and media box with little setup.
ZimaOS full profileumbrelOS vs ZimaOS features
| Feature | umbrelOS | ZimaOS |
|---|---|---|
| Free to useUsable with no licence fee for a normal home setup. | Yes | YesUp to 4 drives |
| One-click app storeInstall apps such as Plex, Jellyfin or Nextcloud from a catalog in the web interface. | Yes | Yes |
| Built-in photo libraryA photo app made by the NAS maker, not just a third-party app you install. | Yes | Yes |
| Local AI apps in the storeOllama or another local AI runtime can be installed from the official catalog or a built-in feature. | Yes | Yes |
| Mix drive sizes freelyAdd drives of different sizes over time and use their full capacity. | No | No |
| ZFS file systemZFS checks data for silent corruption and supports snapshots. It works best with matching drives and more RAM. | No | No |
| Runs on a Raspberry PiAn official or documented way to run it on a Raspberry Pi. | Yes | No |
| PriceOne-time prices in US dollars. | Free | Free · Plus $29 |
| Minimum RAMAs stated by the maker. | 4 GB | — |
Price, hardware and storage
Only the rows where they differ.
Local AI: hardware matters more than the system
Both answers above depend on your memory and graphics card. See what each kind of hardware can run.
Strengths and trade-offs
umbrelOS
Strengths
- Beautiful, app-first interface
- Runs on a Raspberry Pi 5 as well as PCs
- Local AI and photos built into the app store
Trade-offs
- Not open source: free for personal use only
- Storage features are simpler than TrueNAS or Unraid
- Raspberry Pi images start at 1.7.4 and update to 2.0 afterwards
ZimaOS
Strengths
- Polished, phone-like interface made for non-experts
- Built-in photo library with on-device AI search
- Free for small setups; Plus is a one-time $29
Trade-offs
- Free edition stops at 4 drives and 3 users
- 64-bit PCs with UEFI only; no Raspberry Pi
- Much younger than TrueNAS, Unraid or openmediavault
umbrelOS vs ZimaOS: common questions
Is umbrelOS or ZimaOS better for a home NAS?
It depends on what you need most. Pick umbrelOS if you want to run it on a Raspberry Pi. In short, umbrelOS suits anyone who wants a beautiful home cloud with local AI and doesn’t need advanced storage, and ZimaOS suits families who want a good-looking photo and media box with little setup.
Which is cheaper, umbrelOS or ZimaOS?
They cost the same to start. umbrelOS: Free for personal use; Umbrel Home and Pro hardware sold separately. ZimaOS: Free up to 4 drives and 3 users; Plus is a $29 one-time licence per device.
Which needs less hardware, umbrelOS or ZimaOS?
umbrelOS needs: Dual-core 64-bit Intel or AMD, or Raspberry Pi 5/4; RAM: 4 GB minimum, 8 GB+ recommended; system drive: 32 GB drive. ZimaOS needs: 64-bit Intel or AMD with UEFI; RAM: Not specified; system drive: Internal drive (Secure Boot off).
Can umbrelOS and ZimaOS run AI locally?
umbrelOS: Local AI apps (Ollama and agents) in the app store; an MCP server lets AI agents install apps and manage files. ZimaOS: ZimaOS Photos has on-device smart search; GPUs can be used for AI workloads; a guide covers running a local language model.
Can I mix drive sizes on umbrelOS or ZimaOS?
Neither is built for it. umbrelOS: FailSafe mirrors drives (RAID), with drive health shown in the interface. ZimaOS: RAID levels and JBOD from the web interface.
Which is easier for beginners, umbrelOS or ZimaOS?
We rate both beginner, based on how much a first-time NAS builder has to learn.
More NAS comparisons
Sources, checked October 19, 2026: umbrelOS README · umbrelOS downloads · What’s new in umbrelOS 2.0 · umbrelOS product page · ZimaOS pricing · ZimaOS on GitHub · ZimaOS 1.8 beta announcement · ZimaOS documentation. The level is our judgment of how much a first-time NAS builder has to learn.