PDMreader vs 中科水族
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDMreader
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PDMreader can open PowerDesigner pdm file which encoded in xml,and show table list ,column details ,Indexes ,keys ,Procedures and triggers . you can use search bar to filter the tables which table name or table code or column name or column code match the key word.the app can also generate a simple creating table sql.
中科水族
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Fish farming artifact, aquarium black technology.
Screenshots
Verdict
The clearest difference is price: 中科水族 at Free against PDMreader's $1.99. 中科水族 also leads on update cadence (every 3 weeks vs every 39 months). On ads, in-app purchases, device support and iOS requirement 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
中科水族 is free to download; PDMreader costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
PDMreader ships an update every 39 months, 中科水族 every 3 weeks. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.
| Parameter | PDMreader | 中科水族 |
|---|---|---|
| Price | $1.99 | Free — better |
| Update frequency | Every 39 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 102 MB |
| Age rating | 4+ | 17+ |
| Developer | 鹏 王 | 世纪中科科技 |
In-app purchases
PDMreader
No in-app purchases
中科水族
No in-app purchases
