A vs HAPPY
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
A
This app simplifies structural analysis for engineers and architects. It uses Direct Stiffness Analysis to calculate shear forces, bending moments, and deflections for beams, trusses, and frames. Get instant results and detailed reports for documentation and learning.
- Direct Stiffness Analysis
- Beam, truss, and frame analysis
- Shear force, bending moment, deflection calculations
- User-friendly interface
- Detailed analysis reports
- Educational resource
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A-Projects: Structural Analysis Simplified Unlock the power of structural analysis with A-Projects, your ultimate companion for engineers and architecture enthusiasts! Whether you’re designing beams, trusses, or frames, our app utilizes Direct Stiffness Analysis to deliver accurate solutions for shear forces, bending moments, and deflections. Key Features: User-Friendly Interface: Intuitive navigation that allows you to easily input data and visualize results. Comprehensive Design Tools: Analyze various structures including beams, trusses, and frames with precision. Instant Results: Get quick calculations for shear forces, bending moments, and deflections at your fingertips. Detailed Reports: Generate in-depth analysis reports to help in documentation and presentations. Educational Resource: Ideal for students and professionals alike, enhancing learning and reinforcing concepts in structural engineering. Transform your approach to structural design with smart analysis tools that fit in your pocket. Download A-Projects today and step confidently into the world of structural engineering!
HAPPY
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HappyQ is the iOS solution that brings together all the tools you need to collect, monitor, and analyze GNSS data in a single intuitive interface. With HappyQ you can: - Connect to GNSS receivers via BLE and receive real-time data - Monitor device status, even while the app is running in the background - Manage NTRIP connections to remote casters and receive differential corrections for improved positioning accuracy - View your current detected position on the map - Display detailed GNSS data in real time - Stream GNSS data to other compatible apps
Screenshots
Verdict
The clearest difference is price: HAPPY at Free against A's $8.99. HAPPY also leads on iOS requirement (16.6 vs 18.0). On update cadence, 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
HAPPY is free to download; A costs $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.
A ships an update every 3 weeks, HAPPY fortnightly. The most recent releases landed on September 23, 2026 and September 11, 2026 respectively.
| Parameter | A | HAPPY |
|---|---|---|
| Price | $8.99 | Free — better |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 38.5% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 16.6 — better |
| Further details — not scored | ||
| Size | 59 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Jutarus Ratanasethakul | HAPPY SURVEY Sagl |
In-app purchases
A
No in-app purchases
HAPPY
No in-app purchases
