Sampling Calculator vs Locus GTD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sampling Calculator
This tool helps calculate sampling plans based on ANSI/ASQ Z1.4 and MIL-STD-105E standards. It supports various sampling size code letters and AQLs for normal, tightened, and reduced inspections. It serves as an aid to understanding and applying these quality control standards.
- ANSI/ASQ Z1.4 2013 compliance
- MIL-STD-105E compliance
- Single sampling size code letters
- Normal, Tightened, and Reduced inspection
- AQLs from 0.065 to 15
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The sampling calculator conforms to ANSI/ASQ Z1.4 2013 and MIL-STD-105E Standards. NOTE: This calculator may be used as an aid to faster calculate the sampling plan needed, and always in conjunction or with the basic knowledge of the ANSI/ASQ Z1.4 standard. It does not replace the standards mentioned above. The sampling calculator covers single sampling size code letters I, II, III, S1, S2, S3 and S4. Normal, Tightened and Reduced with AQLs from 0.065 to 15.
Locus GTD
This app helps you manage tasks and projects efficiently with AI-powered planning, intelligent filtering, and customizable organization. It aims to bring clarity and control to your life, helping you find focus and master your workflow.
- AI-powered task breakdown
- Infinite-level projects
- Flexible tagging system
- Intelligent filtering and perspectives
- Customizable themes
- iCloud synchronization
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Turn everything on your mind into a clear next action. Locus GTD combines a complete GTD workflow with an AI agent that helps you plan, organize, and act. Capture ideas quickly, manage projects at any depth, and focus on the work that is truly available now. PLAN WITH LOCUS AI • Break complex outcomes into actionable tasks and subtasks • Ask the agent to create, find, update, and organize tasks through conversation • Review your inbox, projects, and schedule with useful context • Use the built-in AI with Locus Pro, or connect a supported custom provider PRACTICE GTD, END TO END • Capture tasks quickly into a trusted inbox • Organize work with projects, groups, tags, and action lists • Use sequential or parallel projects to reveal the right next action • Process your inbox and keep projects current with guided review workflows • Build custom Perspectives for the work and contexts that matter to you PLAN WITHOUT LOSING FOCUS • Schedule work separately from deadlines • See tasks and selected Apple Calendar events together • Use reminders, recurring tasks, flags, and location-based tags • Find anything with global search • Import from Apple Reminders or Things 3, and create portable backups MADE FOR APPLE DEVICES • iCloud keeps supported data in sync where Locus is available • Widgets and the Share extension make capture and review faster • The native Mac app provides Quick Capture, keyboard shortcuts, multi-select, and undo Locus is free to download. Eligible subscription plans may include a free trial. Optional Locus Pro subscriptions and lifetime access are available in the app; the App Store shows the current price for your region. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Locus GTD at Free against Sampling Calculator's $5.99. Locus GTD also leads on update cadence (every 4 days vs every 16 months) and review sentiment (75% vs 50%). Sampling Calculator's advantage is rating (5.0 vs 4.1) and in-app purchases (none vs 4). On ads 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
Locus GTD is free to download; Sampling Calculator costs $5.99 up front. Locus GTD sells 4 in-app purchases, starting at $1.19 per 7 days. Sampling Calculator asks for nothing beyond the download.
Sampling Calculator holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Locus GTD has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 50% of Sampling Calculator's written reviews are positive against 75% of Locus GTD's, so the app with the better star average is not the one people write more warmly about.
Sampling Calculator ships an update every 16 months, Locus GTD every 4 days. The most recent releases landed on September 28, 2026 and October 3, 2026 respectively.
| Parameter | Sampling Calculator | Locus GTD |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 4.1 (9 ratings) |
| Positive reviews | 50.0% of reviews | 75.0% of reviews — better |
| Number of ratings | 1 | 9 — better |
| Update frequency | Every 16 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 3 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | Juan Manuel Alfredo Sanchez | 嘉豪 栾 |
Customer experience
Sampling Calculator
Locus GTD
In-app purchases
Sampling Calculator
No in-app purchases
Locus GTD
- Locus Pro (1 Week)3 Days trial$1.197 Days
- Locus Pro (1 Month)7 Days trial$2.491 Month
- Locus Pro (1 Year)14 Days trial$24.991 Year
- Locus Pro (Lifetime)$79.99
