UBAA vs Echo EFB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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。
Echo EFB
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Echo EFB是一款电子飞行包，完全离线使用 可以导入eaipchina官方网站上的航图数据和数字化数据进行使用 可以使用本机gps或者接入gdl90设备（连接模拟飞行设备）使用 具体有如下功能： - 数字化航图 搜索航点、机场信息 展示空域、航路、航点、机场信息 GPS功能 GDL90模拟GPS功能 - 电子手册 收藏功能 多标签PDF浏览器 多级目录 - 数据管理 AIRAC数据版本识别 数据切换和删除
Screenshots
Verdict
The clearest difference is update cadence: UBAA at fortnightly against Echo EFB's every 3 months. 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.
UBAA ships an update fortnightly, Echo EFB every 3 months. The most recent releases landed on October 1, 2026 and October 5, 2026 respectively.
| Parameter | UBAA | Echo EFB |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Fortnightly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 55 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | 沐衡 李 | 从哲 黄 |
In-app purchases
UBAA
No in-app purchases
Echo EFB
No in-app purchases
