卓信签Pro vs Notta
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
卓信签Pro
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卓信签Pro是一款安全便捷的移动安全认证产品，以密码技术为核心，融合密钥分割、数字签名等技术，结合数字证书为用户提供移动终端的可信身份，主要功能包括身份认证、数据签名、文档签章、数据查询、消息提醒，用户通过手机即可完成系统登录授权和业务签名。
Notta
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Notta 是一个本地优先的 iOS 笔记、阅读与 AI 对话应用。你可以写 Markdown 笔记、导入电子书、在阅读时提问，并让回答带着书籍出处；也可以把引文或对话做成分享图。AI 使用你自己配置的服务地址、模型与 API Key；密钥保存在设备 Keychain。笔记、电子书、日记和对话默认都留在本机。 首次打开会有欢迎笔记与种子书《Notta 的小故事》，帮助你了解如何把零散想法留下来。Notta 日记可按天自动整理你记过、聊过、读过的事；长期了解也默认保存在这台手机上。首版不开放 iCloud / CloudKit 同步。 English: Notta is a local-first iOS app for notes, reading, AI chat, and a private daily diary. Capture Markdown notes, import ebooks, ask questions while reading with source-aware answers, and share quotes or chat as images. AI uses the provider URL, model, and API key you configure. Notes, ebooks, diary entries, and chats stay on your device by default. The first release does not expose iCloud sync.
Screenshots
Verdict
The clearest difference is update cadence: Notta at weekly against 卓信签Pro's every 2 months. 卓信签Pro's advantage is iOS requirement (10.0 vs 16.6). 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.
卓信签Pro ships an update every 2 months, Notta weekly. The most recent releases landed on October 19, 2026 and October 6, 2026 respectively.
| Parameter | 卓信签Pro | Notta |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 10.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 12 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | 山东卓码信息技术有限公司 | 嘉奇 龙 |
In-app purchases
卓信签Pro
No in-app purchases
Notta
No in-app purchases
