ESi Centro vs Honest Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ESi Centro
Control your home's heating and cooling remotely with this smart thermostat. It offers sophisticated energy-saving features for enhanced comfort and control.
- Programmable room thermostat
- Quick installation
- Easy to use
- Energy saving features
- High level of control
- Enhanced comfort
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The ESi Centro range of programmable room thermostats are quick to install, easy to use and packed with energy saving, sophisticated features that give high levels of control and comfort for the homeowner.
Honest Mobile
This mobile network offers ethical and innovative SIM plans focused on customer and environmental well-being. It provides options for a second SIM with global roaming or an essential everyday SIM with fast 5G and monthly billing. Users benefit from strong UK signal coverage and accessible human customer support.
- Ethical and innovative SIM plans
- Unbeatable UK signal
- Free global roaming in 180+ countries
- Instant second SIM setup
- UK's fastest 5G
- Monthly dropping bills
- Friendly human customer support
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Honest is the network doing mobile right, by you and the planet. Unlike the big networks, we actually care about the same things you do. So you get straightforward, ethical and innovative SIM plans that don’t cost the earth (figuratively and literally). Smart SIM The ultimate second SIM: • Unbeatable UK signal on EE, O2, Three and Vodafone • Free global roaming in 180+ countries • Instant set up alongside your main SIM Classic SIM Your essential everyday SIM: • UK’s fastest 5G • A bill that drops every month • Free EU roaming (first 5 days of every trip) All backed by a team of real, friendly humans you can speak to in seconds. Ready for a bold new standard of mobile? Join the UK’s top-rated B Corp mobile network today.
Screenshots
Verdict
The clearest difference is monetization model: Honest Mobile at ad-supported against ESi Centro's paid. Honest Mobile also leads on update cadence (weekly vs every 5 weeks) and review sentiment (35% vs 17%). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ESi Centro ships an update every 5 weeks, Honest Mobile weekly. The most recent releases landed on September 19, 2026 and September 25, 2026 respectively.
| Parameter | ESi Centro | Honest Mobile |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 16.7% of reviews | 34.6% of reviews — better |
| Update frequency | Every 5 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.4 |
| Further details — not scored | ||
| Size | 42 MB | 123 MB |
| Age rating | 4+ | 4+ |
| Developer | ESI Controls Ltd | Honest Enterprises |
Customer experience
ESi Centro
Honest Mobile
User reviews
ESi Centro
From App Store reviewsWhat we love
- 👍 Works well once connected
- 👍 Basic functionality is good
- 👍 Integration with Alexa works well
- 👍 App works perfectly fine
- 👍 Basic functionality is generally good
Room to improve
- 🐛 Painful connection process
- 🐛 Frequent connection issues
- 🐛 App cannot find thermostat
- 🐛 Nightmare to connect
- 🐛 Barely works, sometimes not at all
Honest Mobile
From App Store reviewsWhat we love
- 🚀 Excellent coverage and signal
- 👍 User-friendly app
- 💡 Innovative features like Smart SIM
- 🌳 Eco-friendly company with carbon-negative initiatives
- ⭐ Great customer service and support
Room to improve
- 🐛 App stability and login issues
- 🔍 Limited app compatibility
- 💰 Relatively expensive compared to competitors
- 🤔 Misleading or unclear marketing claims
Bugs and requests
ESi Centro
Reported bugs
45 issues- Connection issues after updates
- App cannot find thermostat
- 5GHz WiFi issues
- Setup requires turning off 5GHz WiFi
- Permissions not requested at outset
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- Duplicate devices listed
- Cannot delete offline devices
- App crashes after updates
- Heating schedule resets
- Thermostat time incorrect
- Firmware update stuck
- Thermostat buttons unresponsive
- App freezes on login screen
- Incompatible with older devices
- App logs out frequently
- Room temperature not updating
- User interface design appalling
- Incorrect day reported
- No indication if boiler is on/off
- App crashes when accessing temperature control
- App crashes when trying to control heating
- App crashes when clicking thermostat
- App shuts down immediately
- App not working at all
- App crashes
- App doesn't sync
- App doesn't install properly
- App crashes on iOS 12
- Thermostat doesn't switch heating on
- Delays in thermostat switching heating on
- Thermostat doesn't call for heating
- Thermostat doesn't switch on without intervention
- App shows thermostat is off
- App keeps crashing
- App is always offline
- Device not found
- App ceased to work
- Device offline
- App not functional after upgrade
- App shuts down when clicking thermostat
- App opens briefly and crashes
- App crashes every time
- App struggles to find devices
- App cannot operate devices remotely
- App doesn't work on iOS 12
Requested features
11 requests- Option to rename devices
- 15/30 minute boost on heating
- Option for a 15/30 minute boost on heating
- Option to remove Hot Water for combi-boiler users
- Option to rename thermostats
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- Smart home integration like Homekit
- Geolocation integration
- Ability to rename thermostats
- Dark mode option
- Advanced analytics dashboard
- Option for a default home screen control
Honest Mobile
Reported bugs
3 issues- App freezes and crashes
- Inconsistent login and account management
- Billing and payment issues
Requested features
3 requests- Expand app compatibility to more popular apps
- Improve app navigation and user experience
- Provide more granular network switching controls
In-app purchases
ESi Centro
No in-app purchases
Honest Mobile
No in-app purchases
