HappyGo CERA vs OpenGS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HappyGo CERA
Control CERA+ smart mugs and portable coffee machines from your phone. Monitor battery and working status, set precise temperatures, and schedule brewing times. This app offers a user-friendly interface for managing your connected CERA+ devices.
- Control CERA+ devices
- Monitor battery status
- Monitor working status
- Set custom temperatures
- Schedule brewing times
- Temperature presets
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This APP is a mobile tool for controlling CERA+ series devices. It mainly supports smart mugs and portable coffee machines. The APP can display the device's battery status, working status and usage. You can set the temperature in the mug through your phone, with time appointment and temperature preset functions. The APP has a clean interface and is easy to operate, making it a powerful assistant for CERA+ series devices.
OpenGS
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Bring Your AI to Life: The Ultimate Programmable Vessel for AI Agents Meet Open GS (Open GhostShell), the most advanced, open-architectured iOS client designed to give artificial intelligence a true "vessel" and "soul." Inspired by the frontier of autonomous agents, Open GS goes beyond simple chat interfaces, allowing you to craft, manage, and evolve truly intelligent AI companions right from your iPhone. Whether you are an AI enthusiast, a developer, or a power user looking for the ultimate OpenClaw-style experience on mobile, Open GS provides the infrastructure your AI needs to think, remember, and act.
Screenshots
Verdict
The clearest difference is price: HappyGo CERA at Free against OpenGS's $1.99. HappyGo CERA also leads on iOS requirement (13.0 vs 17.0). OpenGS's advantage is update cadence (daily vs every 4 months). On ads, 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
HappyGo CERA is free to download; OpenGS costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
HappyGo CERA ships an update every 4 months, OpenGS daily. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.
| Parameter | HappyGo CERA | OpenGS |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 2.6 (5 ratings) — better | — |
| Positive reviews | 25.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 4 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 30 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Zhuhai Luckyman Technology Co.,ltd. | 鉴 郗 |
In-app purchases
HappyGo CERA
No in-app purchases
OpenGS
No in-app purchases
