我爱PDF vs Hearing test instruments
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
我爱PDF
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我爱PDF支持PDF转Word，Word转PDF，PDF转图片，图片转PDF，PDF转Excel，Excel转PDF，PDF转PPT，PPT转PDF，PDF转CAD，CAD转PDF，CAJ转PDF，PDF转OFD，OFD转PDF，PDF压缩，图片压缩，音频格式转换，视频格式转换...等116种文件格式互转，让您的工作和学习更高效更轻松。
Hearing test instruments
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一款连接蓝牙耳机调节音量大小的应用
Screenshots
Verdict
我爱PDF and Hearing test instruments 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.
我爱PDF ships an update every 2 months, Hearing test instruments every 5 weeks. The most recent releases landed on September 17, 2026 and September 15, 2026 respectively.
| Parameter | 我爱PDF | Hearing test instruments |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 | 12.1 — better |
| Further details — not scored | ||
| Size | 68 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Hainan Yidaosan Technology Co., Ltd. | Cemho Medical Technology (Guangdong) Co., Ltd |
In-app purchases
我爱PDF
No in-app purchases
Hearing test instruments
No in-app purchases
