TTHotel vs Carbon
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TTHotel
Manage and control smart hotel locks remotely. Adjust settings, update firmware, and cancel access cards for hotel guests. This tool simplifies hotel lock administration.
- Add and manage hotel locks
- Adjust lock clock settings
- Update lock firmware
- Cancel access cards
- Remote lock control
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It is the tool of smart hotel system. It can be used to add and manage hotel locks, such as adjusting clock, updating firmware, cancelling cards, and etc.
Carbon
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Carbon-Adjust is a pioneering global platform that empowers homeowners to perform end-to-end energy-efficient home improvements. It offers a comprehensive one-stop-shop marketplace for home energy efficiency and carbon offsetting, providing a wide range of products and services such as energy audits, energy-saving devices, insulation services, and installations like solar panels and HVAC systems, energy plans, the option to speak to an energy consultant, a free carbon footprint tracker, personalized climate transition score, a scheduler for optimal decarbonization of your home, a free energy guide E-book and so much more available on the platform.
Screenshots
Verdict
The clearest difference is update cadence: Carbon at every 6 days against TTHotel's every 3 weeks. 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.
TTHotel ships an update every 3 weeks, Carbon every 6 days. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.
| Parameter | TTHotel | Carbon |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (4 ratings) — better | — |
| Positive reviews | 28.6% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 weeks | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 77 MB | 231 MB |
| Age rating | 4+ | 4+ |
| Developer | Hangzhou Sciener Smart Technology | Escrow-Tech Limited |
In-app purchases
TTHotel
No in-app purchases
Carbon
No in-app purchases
