量信 vs 长沙云OA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
量信
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量信是以密码技术为核心的企业加密通讯与安全协同办公平台。构建以“用密码定义边界”为宗旨的数据安全防护体系，保障企业数据从产生、传输、存储、分类、共享、销毁全生命周期的数据安全。集成密话、密信、密会、密视频、密线、密文、密盘、密友通讯录等八大加密应用，结合零信任、数据防泄漏、安全沙箱等多种安全技术，对企业通讯和办公场景下的云、管、端数据进行全程加密保护。
长沙云OA
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长沙云OA是一款政府单位内部使用的自动化办公管理系统移动端产品，以简化办公事务、规范办公流程、提高办公效率、节省办公成本为核心价值理念。主要功能有：移动审批、协调任务、工作汇报、项目管理、在线报餐、智能开门等，满足政府单位绝大部分OA办公使用场景。
Screenshots
Verdict
The clearest difference is update cadence: 量信 at every 9 days against 长沙云OA's every 6 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.
量信 ships an update every 9 days, 长沙云OA every 6 months. Both last shipped on October 30, 2026.
| Parameter | 量信 | 长沙云OA |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 days — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 154 MB | 56 MB |
| Age rating | 12+ | 4+ |
| Developer | Nanjing e-Quantum Information Technology Co., Ltd | Newtop LLC |
In-app purchases
量信
No in-app purchases
长沙云OA
No in-app purchases
