PDF离线版 vs UBAA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF离线版
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金软天下pdf加密方案包括在线和离线方案，这个阅读器属于离线方案阅读器部分，用来安全分发pdf加密文档，防止用户对文档编辑拷贝
UBAA
A cross-platform campus service aggregator designed for Beihang University students. It provides a one-stop solution for academic needs including class schedules, exams, grades, attendance, and teaching evaluations.
- Class schedule management
- Exam and grade tracking
- Attendance monitoring
- Teaching evaluation system
- Cross-platform compatibility
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面向北航学生的跨平台校园服务聚合客户端，一站式覆盖课表、考试、成绩、签到、评教等校园场景。
Screenshots
Verdict
The clearest difference is iOS requirement: PDF离线版 at 11.0 against UBAA's 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | PDF离线版 | UBAA |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (5 ratings) — better |
| Number of ratings | — | 5 — better |
| Update frequency | — | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 22 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Tianjin Jinruan Tianxia Technology Co., Ltd. | 沐衡 李 |
In-app purchases
PDF离线版
No in-app purchases
UBAA
No in-app purchases
