典证 vs 勤学老师端
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
典证
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一款针对线下取证场景的专业取证工具，包含拍照取证、录像取证、录音取证以及录屏取证四大部分功能，还有文件存证、哈希存证功能。全场景覆盖，随时随地留存证据，侵权取证无一遗漏；司法公证+区块链技术双重背书，证据实时上链防篡改。适用多场景取证，满足不同取证需求，提供专业化服务为您的维权道路保驾护航。
勤学老师端
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勤学老师端是一款管理类应用，提供练习批改、考勤打卡和信息查看等功能，支持对教学活动的高效组织和学习进度的实时跟踪。
Screenshots
Verdict
The clearest difference is update cadence: 勤学老师端 at every 9 days against 典证's every 11 months. 典证's advantage is iOS requirement (13.0 vs 15.0). 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.
典证 ships an update every 11 months, 勤学老师端 every 9 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.
| Parameter | 典证 | 勤学老师端 |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.7 (3 ratings) — better |
| Number of ratings | — | 3 — better |
| Update frequency | Every 11 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 33 MB | 359 MB |
| Age rating | 17+ | 4+ |
| Developer | 安徽省池州市九华公证处 | 勤学云(上海)科技有限公司 |
In-app purchases
典证
No in-app purchases
勤学老师端
No in-app purchases
