Contract Lab vs NoteDri
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
NoteDri
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NoteDri is your all-in-one vehicle logbook and health tracker for cars and EVs. Track fuel, costs and maintenance in seconds — by hand, by voice, or straight from a photo of your dashboard or receipt. Get timely reminders before your inspection, insurance or registration expires, and watch your Vehicle Health Score update automatically as you log data. KEY FEATURES • Fuel & odometer logging — snap a photo of your dashboard or receipt (OCR), or just speak the numbers • Cost & consumption reports — see exactly where your money goes, plus a year-in-review recap • Maintenance reminders — never miss an oil change, inspection or registration deadline • Automatic GPS trip tracking — starts and stops on its own as you drive, with a route map and a driving score • Nearby fuel stations & EV charging points on the map • Vehicle Health Score — a simple score built from your vehicle's age, service history and driving data • OBD2 diagnostics — connect a Bluetooth ELM327/Vgate adapter to read live engine data (RPM, speed, coolant temperature, fuel level) and diagnostic trouble codes; DTC lookup works even without an adapter or Premium • Multi-vehicle garage — manage every car and EV you own in one place NoteDri also works at notedri.com, so your data stays in sync between the web and the app. Fuel consumption, cost and health-score figures are estimates based on the data you enter and are for reference only — they do not replace manufacturer, inspection-authority or professional advice.
Screenshots
Verdict
The clearest difference is in-app purchases: Contract Lab at none against NoteDri's 1. Contract Lab also leads on ads (none vs shown). NoteDri's advantage is iOS requirement (16.0 vs 18.0). On price, update cadence 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. NoteDri sells 1 one-off in-app purchase. Contract Lab asks for nothing beyond the download.
Contract Lab ships an update every 4 days, NoteDri weekly. Both last shipped on October 31, 2026.
| Parameter | Contract Lab | NoteDri |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days — better | Weekly |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 80 MB | 108 MB |
| Age rating | 4+ | 4+ |
| Developer | 奇 林 | LUONG SANG NGUYEN |
In-app purchases
Contract Lab
No in-app purchases
NoteDri
- Lifetime Premium$3.99









