SmartAquar vs KZJ
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SmartAquar
Remotely manage your aquarium's heating rod from any location. Supports controlling multiple devices simultaneously and allows for easy sharing with family members. Receive instant notifications about your tank's status.
- Remote heating rod control
- Multi-device support
- Automatic operation
- Device sharing
- Real-time condition alerts
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*Control your water tank heating rod anytime and anywhere *Supports multi device control, one device, automatic operation *Device sharing, intelligent life shared by the whole family *Push messages to keep track of water tank conditions at all times
KZJ
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This APP uses Bluetooth control mode to control the device, so that the device can only run within a specified time to realize automatic control.
Screenshots
Verdict
SmartAquar and KZJ are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.
| Parameter | SmartAquar | KZJ |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (3 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.5 | 15.1 — better |
| Further details — not scored | ||
| Size | 69 MB | 70 MB |
| Age rating | 17+ | 12+ |
| Developer | Gizwits IoT Technology Co., Ltd. | Zhongshan Kangzhijie Electrical Appliances Co., Ltd. |
In-app purchases
SmartAquar
No in-app purchases
KZJ
No in-app purchases
