SMI Chat vs OpenIoTHub
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SMI Chat
This communication platform facilitates group and individual messaging, file sharing, and voice/video calls within a secure, encrypted environment. It allows seamless interaction with other apps in its ecosystem and offers features like read receipts and searchable history across devices.
- Group chat rooms
- Message, image, video, file sharing
- 1-on-1 and conference voice/video calls
- End-to-end encryption
- Read receipts
- Matrix.org ecosystem integration
- Searchable chat history
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Built around group chat rooms, SMI Chat can interact with other SMI apps and lets you share messages, images, videos and files among team members. SMI Chat is the center of all communications of the team’s collaborative environment. Features include: • Instantly share messages, images, videos and files of any kind within groups of any size • Voice and video 1-1 and conference calling via WebRTC • End-to-end encryption using Olm (https://matrix.org/git/olm) • See who's reading your messages with read receipts • Communicate with users anywhere in the Matrix.org ecosystem. • Participate in guest-accessible public rooms • Highly scalable - supports hundreds of rooms and thousands of users • Fully synchronized message history across multiple devices and browsers • Finely configurable notification settings, synchronized over all devices • Infinite searchable chat history • Permalinks to messages
OpenIoTHub
This tool provides remote access and management for various IoT devices and intranet services. It supports multiple protocols and integrates with popular private cloud solutions and hardware.
- Remote IoT device management
- Intranet penetration access
- Supports TCP, UDP, HTTP, FTP
- Integrates with private clouds (CasaOS, ZimaOS, etc.)
- Supports various hardware and Docker interfaces
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IoT device management and intranet penetration access tool, supporting various open-source and third-party devices (Feixun plug, Feixun R1 speaker, ONVIF camera, etc.) 1. Support TCP, UDP, HTTP, FTP intranet penetration 2. Support intelligent hardware, including open-source switches, Feixun power strips, etc 3. Support the following private clouds - CasaOS - ZimaOS - Green Union NAS can manually add and access web pages - Feiniu NAS manually adds access to various Docker interfaces - Unraid - Synology - QNAP - docker
Screenshots
Verdict
The clearest difference is rating: OpenIoTHub at 5.0 against SMI Chat's 4.0. OpenIoTHub also leads on update cadence (weekly vs every 3 weeks). SMI Chat's advantage is ads (none vs shown) and review sentiment (100% vs 67%). On price, ratings volume, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
OpenIoTHub holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews complicate that: 100% of SMI Chat's written reviews are positive against 67% of OpenIoTHub's, so the app with the better star average is not the one people write more warmly about.
SMI Chat ships an update every 3 weeks, OpenIoTHub weekly. The most recent releases landed on October 6, 2026 and October 17, 2026 respectively.
| Parameter | SMI Chat | OpenIoTHub |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 66.7% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 9.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 79 MB | 155 MB |
| Age rating | 4+ | 4+ |
| Developer | Siliconmotion | Hefei Yunyilian Intelligent Technology Co., Ltd |
Customer experience
SMI Chat
OpenIoTHub
In-app purchases
SMI Chat
No in-app purchases
OpenIoTHub
No in-app purchases









