Geneva Moon vs Build24
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Geneva Moon
This app offers an astronomically accurate moon display for your Apple Watch. It provides a visually pleasing indication of the moon's current phase and orientation, matching what you see in the sky. You can also explore future moon phases by rotating the digital crown.
- Astronomically accurate moon display
- Visually rich or simplified appearance options
- Main display shows azimuth, elevation, phase, and orientation
- Time travel through moon phases
- Compass integration for moon location (Series 5+)
- Complications for all watch face types
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I've always liked wearing a lunar complication on my Apple Watch. There is something both visually delightful but yet also slightly geeky about it. But I was unable to find a complication that provided an astronomically accurate moon display...which just kinda bothered me. So I made Geneva Moon. Geneva Moon seeks to provide a highly accurate, visually pleasing indication of what the moon looks like right now, right where you are. My goal was to make it so that if you look down at your wrist and then up into the sky the images you see should match. It includes a robust set of complications for every watch face type. Choose between either a visually rich 'actual ' appearance or a more simplified version, to fit your own personal style. The main display indicates the current azimuth and elevation of the moon along the horizon along with a visual indication of its phase and orientation. Rotate the Digital Crown to shift forward and backwards through time and see how the moon will shift (tap on the screen to reset to now) On Apple Watches equipped with a compass (Series 5) you can have Geneva Moon orient itself towards the actual moon to make it easier to locate the moon in the sky. Thank you for considering Geneva Moon, I hope you enjoy having the moon on your wrist as much I do. —Dave
Build24
This app offers 41 construction calculators for estimating materials, checking dimensions, and converting measurements. It includes tools for concrete, framing, roofing, and more, supporting both imperial and metric units. Users can export reports and save frequently used calculators.
- 41 construction calculators
- Material estimation
- Dimension checking
- Measurement conversion
- Imperial and metric units
- PDF report export
- Favorites for quick access
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Build24 brings 41 construction calculators together for contractors, carpenters and home projects. Estimate materials, check dimensions and convert measurements from one app. Find tools for concrete slabs, footings and post holes; framing stud counts, stairs and decking; roofing area and pitch; brick, block, gravel and soil; drywall, tile and paint. Measurement tools cover feet and inches, fractions, area, volume and unit conversion. Choose imperial or metric units where supported. Use search and Favorites to get back to the calculators you use most. Export and share PDF reports with the calculator name, date, inputs and results. Privacy Policy: https://prismandforge.com/apps/build24/legal/privacy_policy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Geneva Moon at none against Build24's 2. Geneva Moon also leads on update cadence (every 2 days vs every 4 weeks) and device support (3 vs 1). On price and ads 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. Build24 sells 2 in-app purchases, starting at $29.99 per year. Geneva Moon asks for nothing beyond the download.
Geneva Moon ships an update every 2 days, Build24 every 4 weeks. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.
| Parameter | Geneva Moon | Build24 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (97 ratings) — better | — |
| Positive reviews | 49.4% of reviews | — |
| Number of ratings | 97 — better | — |
| Update frequency | Every 2 days — better | Every 4 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Freemium — better |
| Devices | iPhone, iPod, Apple Watch — better | iPhone |
| Requires iOS | 15.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 3 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Cross Forward Consulting, LLC | Yerlan Kussainov |
In-app purchases
Geneva Moon
No in-app purchases
Build24
- Build24 Premium Yearly7 Days trial$29.991 Year
- Lifetime Premium$39.99







