HotKup vs OTKAX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HotKup
This app allows you to control the temperature of your mug, boil water, brew beverages, and maintain your ideal drinking temperature. It offers both app and manual control, with versatile power options including battery, AC, and 12v car power.
- Boil water
- Brew coffee/tea
- Maintain perfect temperature
- App and manual control
- Battery, AC, and 12v power options
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Temperature control mug can boil water, brew coffee or tea, maintain perfect temperature. App or manual control. Battery, AC or 12v car power.
OTKAX
This app connects to your device via Bluetooth to control and test equipment. It also includes a feature to remind users to stay hydrated throughout the day.
- Bluetooth device connection
- Equipment control
- Equipment testing
- Water intake reminders
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Connect the device via Bluetooth; Control and test the equipment of the brand; Remind users to drink water.
Screenshots
Verdict
The clearest difference is review sentiment: OTKAX at 50% against HotKup's 0%. OTKAX also leads on rating (2.0 vs 1.5) and update cadence (every 3 weeks vs every 2 months). On price, ratings volume, ads and in-app purchases 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.
OTKAX holds the better App Store score, 2.0 against 1.5. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews point the same way: 0% of HotKup's written reviews are positive against 50% of OTKAX's.
HotKup ships an update every 2 months, OTKAX every 3 weeks. Both last shipped on October 24, 2026.
| Parameter | HotKup | OTKAX |
|---|---|---|
| Price | Free | Free |
| Rating | 1.5 (4 ratings) | 2.0 (4 ratings) — better |
| Positive reviews | 0.0% of reviews | 50.0% of reviews — better |
| Number of ratings | 4 | 4 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.4 | 12.0 — better |
| Further details — not scored | ||
| Size | 19 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Sinospec | 水金 陈 |
Customer experience
HotKup
OTKAX
In-app purchases
HotKup
No in-app purchases
OTKAX
No in-app purchases
