商业易筋经 vs Contract Lab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
商业易筋经
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为创业者提供学习交流的平台,帮创业者打通商业任督二脉 用户可以发布动态、学习易筋经创业视频课程、查看商业资源、查看项目分析报告等
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
Verdict
The clearest difference is update cadence: Contract Lab at every 4 days against 商业易筋经's every 3 weeks. 商业易筋经's advantage is iOS requirement (10 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
商业易筋经 ships an update every 3 weeks, Contract Lab every 4 days. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.
| Parameter | 商业易筋经 | Contract Lab |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 10 — better | 18.0 |
| Further details — not scored | ||
| Size | 38 MB | 80 MB |
| Age rating | 4+ | 4+ |
| Developer | Hangzhou Facing the Sea Technology Co., Ltd | 奇 林 |
In-app purchases
商业易筋经
No in-app purchases
Contract Lab
No in-app purchases








