# Jazz Disk Bench Pro vs 证件水印

The clearest difference is rating: 证件水印 at 5.0 against Jazz Disk Bench Pro's 4.5. 证件水印 also leads on review sentiment (92% vs 79%) and price ($1.99 vs $2.99). Jazz Disk Bench Pro's advantage is update cadence (every 5 days vs every 14 months). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Jazz Disk Bench Pro costs $2.99 and 证件水印 $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

证件水印 holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 30 and 12 respectively. Written reviews point the same way: 79% of Jazz Disk Bench Pro's written reviews are positive against 92% of 证件水印's.

Jazz Disk Bench Pro ships an update every 5 days, 证件水印 every 14 months. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Jazz Disk Bench Pro | 证件水印 |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | [4.5 (30 ratings)](https://appshunter.io/ios/app/jazz-disk-bench-pro/id1298441490/reviews) | **[5.0 (12 ratings)](https://appshunter.io/ios/app/id1582930176/reviews)** |
| Number of ratings | **30** | 12 |
| Positive reviews | 79.2% of reviews | **92.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 14 months |
| Monetization | Paid | Paid |
| Size | 22 MB | 2 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Baofeng County Jixu Education Information Consulting Co., Ltd.](https://appshunter.io/developer/1298441489) | [阳理 江](https://appshunter.io/developer/1645314423) |

## What reviewers say

### Jazz Disk Bench Pro

[App page](https://appshunter.io/ios/app/jazz-disk-bench-pro/id1298441490)

This tool measures storage performance for SSDs, SD cards, and internal/external drives. It provides accurate data on throughput using industry-standard testing methods for sequential speeds, random IOPS, and stress testing.

**Highlights:** Sequential Speed Test, 4K Random IOPS, Pro Stress Test, External Storage Support, Benchmark Details

**Features:** Vision Pro support

**In-app purchases:** none


### 证件水印

[App page](https://appshunter.io/ios/app/id1582930176)

This utility app allows users to add text watermarks to documents and photos, protecting personal information from misuse. It supports batch processing for up to 50 images and can export in PDF or image formats, including an A4 print mode.

**Highlights:** Add text watermarks, Protect privacy information, A4 copy print mode, Export PDF or image, Batch watermark up to 50 photos, No network requests

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Jazz Disk Bench Pro free?

Jazz Disk Bench Pro costs $2.99, with no in-app purchases.

### Is 证件水印 free?

证件水印 costs $1.99, with no in-app purchases.

### Which has better reviews, Jazz Disk Bench Pro or 证件水印?

证件水印 is rated higher. Jazz Disk Bench Pro averages 4.5 out of 5 from 30 ratings, while 证件水印 averages 5.0 from 12 ratings.

### Do Jazz Disk Bench Pro or 证件水印 have ads?

Neither Jazz Disk Bench Pro nor 证件水印 shows ads.

### Which is updated more often, Jazz Disk Bench Pro or 证件水印?

Jazz Disk Bench Pro ships an update every 5 days, and 证件水印 every 14 months. Most recently, Jazz Disk Bench Pro was updated on October 29, 2026 and 证件水印 on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*