Comparison

Keelin vs PH

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Keelin

Features
Read full description

Keelin-Beacon is connected to our hardware STB1 device via Bluetooth for convenience. The STB1 is a BLE5.0de high-precision temperature sensor recorder that collects the ambient temperature of the device and uses Bluetooth broadcast to achieve 24-hour monitoring via Keelin-Beacon. 1. The current temperature value, voltage value and RSSI of nearby devices can be viewed through Bluetooth broadcast data. 2, historical data information (temperature + voltage + time, the most cocoa storage 4 days of data), at the same time can export data. Can be applied to logistics management, supply chain, warehouse, terminal and personal asset management.

About

PH

Features
Read full description

Through PH-SOLAR new energy monitoring platform, users can centrally monitor, store, analyze and display the data and operation status of the power station, so as to know the operation management status of the power plant and the data energy efficiency analysis, and estimate the revenue, so as to provide a substantial scientific basis for the economic operation and the design of the power station. Through real-time communication technology, the fault information is processed and diagnosed quickly, which provides technical support for the safe operation of the power station.

Screenshots

Keelin4 screens
PH4 screens

Verdict

The call

The clearest difference is update cadence: PH at fortnightly against Keelin's every 3 months. Keelin's advantage is iOS requirement (13.0 vs 15.6). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Keelin ships an update every 3 months, PH fortnightly. The most recent releases landed on September 13, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 4 level
Keelin versus PH: the parameters behind the verdict, then further details
ParameterKeelinPH
PriceFreeFree
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.0 — better15.6
Further details — not scored
Size7 MB46 MB
Age rating4+4+
Developer佳喜 肖Suzhou zhongchupuhua Electric Technology Co., Ltd

In-app purchases

None

Keelin

No in-app purchases

None

PH

No in-app purchases

Questions

Is Keelin free?
Keelin is free to download, with no in-app purchases.
Is PH free?
PH is free to download, with no in-app purchases.
Do Keelin or PH have ads?
Neither Keelin nor PH shows ads.
Which is updated more often, Keelin or PH?
Keelin ships an update every 3 months, and PH fortnightly. Most recently, Keelin was updated on September 13, 2026 and PH on October 25, 2026.

Other comparisons