Comparison

云证签 vs Contract Lab

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

云证签

Features
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云证签,中国金融认证中心CFCA为您打造的用于安全认证的数字签名工具!为无纸化办公、在线交易、电子合同等各种业务场景提供安全合规的数字证书,为您的业务保驾护航。 主要功能有: 1.配置服务地址:云证签支持内网部署服务,可通过扫码或手动输入地址的方式与服务连接。 2.证书下载:同时支持SM2及RSA证书安装到手机端,用于身份认证和扫码签名等。 3.证书登录:支持直接选择手机端安装的用户证书进行手机端APP登录。 4.扫码登录:用户在PC端访问业务系统时,业务系统会产生安全二维码,使用云证签APP扫码签名可协助用户登录业务系统。 5.扫码签名:用户在业务系统进行业务处理时,可使用云证签APP扫码签名以保证业务的真实有效。 6.手写签章、免认证设置:支持用户通过手写签名申请一张服务器托管证书,用户PC端电子合同等应用使用,并且可以进行免认证时间设置。

About

Contract Lab

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ContractLab is an analytical calculator for the trade-up contract mechanic inside Counter-Strike 2. It helps players plan material combinations before they execute contracts inside Valve's official game client. This is a calculator and reference tool. ContractLab does NOT: • Execute any in-game actions or interact with Valve game servers • Facilitate buying, selling, or trading of virtual items between users • Provide financial, investment, or trading advice • Operate any form of gambling, loot box, or lottery mechanic — FEATURES — • Knapsack-based contract solver: compute optimal material combinations under wear-value and quantity constraints • Wear-value precision calculator down to 7 decimal places • Multi-platform market price reference (Buff, Steam Market, C5, YouPin, CSFloat, EcoSteam) — data is fetched from each platform's public API on user request, ContractLab does not store or proxy purchase data • Skin database with collection / rarity / wear-tier metadata • Local-first compute: contract analysis runs entirely on-device — DISCLAIMER — ContractLab is an independent tool developed by fans, not affiliated with, endorsed by, or sponsored by Valve Corporation. Counter-Strike, CS:GO, CS2, and all related marks are trademarks of Valve Corporation. Market price data is informational only and may not reflect real-time prices. Virtual item prices fluctuate; nothing in this app constitutes investment, financial, or trading advice. Use at your own discretion. — PRIVACY — ContractLab does not track you across other apps or websites. We do not use the IDFA. Third-party market account credentials are stored only in your device's Keychain and never transmitted to our servers. See the in-app privacy notice for full details. Questions or feedback: support@cs-contract.com

Screenshots

云证签4 screens
Contract Lab4 screens

Verdict

The call

The clearest difference is update cadence: Contract Lab at weekly against 云证签's every 2 months. 云证签's advantage is iOS requirement (11.0 vs 18.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

云证签 ships an update every 2 months, Contract Lab weekly. The most recent releases landed on September 29, 2026 and October 4, 2026 respectively.

Scorecard2 real differences · 4 level
云证签 versus Contract Lab: the parameters behind the verdict, then further details
Parameter云证签Contract Lab
PriceFreeFree
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPod — betteriPhone
Requires iOS11.0 — better18.0
Further details — not scored
Size58 MB69 MB
Age rating4+4+
Developer中国金融认证中心奇 林

In-app purchases

None

云证签

No in-app purchases

None

Contract Lab

No in-app purchases

Questions

Is 云证签 free?
云证签 is free to download, with no in-app purchases.
Is Contract Lab free?
Contract Lab is free to download, with no in-app purchases.
Do 云证签 or Contract Lab have ads?
Neither 云证签 nor Contract Lab shows ads.
Which is updated more often, 云证签 or Contract Lab?
云证签 ships an update every 2 months, and Contract Lab weekly. Most recently, 云证签 was updated on September 29, 2026 and Contract Lab on October 4, 2026.

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