TNAS mobile

476 reviews
Content rating
Everyone
10K+
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About this app

TNAS Mobile is the dedicated mobile application for TerraMaster TNAS devices.

With TNAS Mobile, users can manage files, back up photos, and browse documents remotely from their phone. The app also provides a portable monitoring center to check the status of the TOS system and manage NAS devices anytime and anywhere.

During remote access sessions, TNAS Mobile uses a foreground service to maintain an active network connection between the mobile device and the NAS device. This ensures continuous communication while the user is actively accessing the NAS from external networks.

This persistent network session enables reliable execution of user-initiated tasks such as photo backup and large file transfer, even under unstable network conditions or when the app is running in the background.

When logging into a TOS6 device, TNAS mobile will use VPN connection technology. By enabling the VPN service on your mobile device, a secure, encrypted tunnel is established over the internet, ensuring fast and secure data transmission between you and your TNAS device, thus making the remote access experience smoother and more convenient. TOS7 does not require this service.

Please note that the F2-210 and F4-210 models are currently not compatible with TNAS Mobile version 3. To enjoy the optimal user experience, we recommend downloading the compatible TNAS Mobile app version from the following official link: https://download2.terra-master.com/TNASmobile_Android_2.4.20.apk.
A dedicated mobile app for TerraMaster NAS.
Updated on
Jul 6, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Audio
  • Data is encrypted in transit

Ratings and reviews

442 reviews
Eric Gillette
August 28, 2026
I have to agree with everyone else: backward compatibility should be an obvious thing for the app. Since my NAS is still running TOS 5 my phone app will no longer connect. That's not smart from a user perspective. You essentially just locked a bunch of people out of their NAS systems who were connecting with the phone app. Sure I can connect from a computer with no problem, but imagine if I was having my NAS app on the phone backup my phone, which incidentally is exactly what I was doing.
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Terramaster
September 4, 2026
We’re sorry for the inconvenience. Due to TOS system upgrade requirements, TNAS mobile cannot support compatibility across multiple TOS versions. You can download the TNAS mobile version compatible with TOS 5 from the link below: https://download3.terra-master.com/Apps/TNAS%20mobile/android/TNASmobile_Android3.4.045.apk
Joe McCombs
January 19, 2025
Based on reviews, I didn't think this app was legit. Tried it out, and had no problems. Was able to login to my TNAS (TOS v6.1), tell it to backup my camera photos automatically, but only when connected to wifi, and set what camera folder specifically and where to put them on the NAS. I haven't a need for it to do anything else yet, but for that purpose, it works well and could not have been easier to setup
17 people found this review helpful
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Samuel Crozier
July 24, 2026
since a recent update I was logged out and can't log back in because of the nas os being incompatiable is what the error said. I also noticed the app at least on my device is very slow to mark as installed unlike other apps. At best this app was a nas file manager on your phone. Honestly, you would recieve the same if not more fuctionaility on a laptop just through the laptops file explorer.
4 people found this review helpful
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What’s new

1. Added compatibility adaptation for TOS7 new initialization.
2. Added adaptation for Thunderbolt direct network connection.
3. Fixed the issue of abnormal display of location album cover in Photos module.
4. Fixed the issue of abnormal backup progress update in Task Center.
5. Fixed several other known issues.
Content rating
Everyone
Users Interact
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App support

About the developer
周彤彦
support@terra-master.com
福荣路蓝湾半岛E栋502 福田区, 深圳市, 广东省 China 518000

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