Lehmann Gallery vs AstroHelm
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lehmann Gallery
Discover art exhibitions, fairs, and cultural events in Portugal. Save favorite articles and news for later reading. Stay updated on the latest in the art world.
- Exhibition listings
- Art fair information
- Cultural event updates
- News articles
- Favorite content saving
- Later reading list
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This app is an exclusive feature of Lehmann gallery that lists exhibitions, art fairs, news, and special cultural events in Portugal. It also allows the user to select and create a list of favourite art reviews and news, as well as saving them for later reading.
AstroHelm
This astronomy app uses on-device plate solving to guide your manual telescope or telephoto lens. It analyzes star patterns in real-time to help you precisely center celestial objects without expensive motorized mounts.
- On-device plate solving
- Real-time star pattern analysis
- Push-to guidance
- Hardware-agnostic compatibility
- Expansive deep-sky object database
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Find galaxies, nebulae, star clusters, and planets without struggling with star hopping. AstroHelm turns your iPhone into a smart push-to finder for almost any manual telescope. Using fast, on-device plate solving, AstroHelm recognizes the stars in your camera view, determines exactly where your telescope is pointing, and guides you to your target. No proprietary telescope. No motorized GoTo mount. Just attach your iPhone with a rigid phone mount and start exploring. NOT SURE WHAT TO OBSERVE? AstroHelm can help with that too. Best Tonight highlights bright, interesting objects visible from your location, so you can spend less time planning and more time observing. HOW IT WORKS Mount: Attach your iPhone securely to your telescope tube, or to your camera using a standard bracket or hot-shoe mount. Choose: Pick a galaxy, nebula, star cluster, planet, or other target from AstroHelm's catalog. Point: Move your telescope while following the on-screen guidance. AstroHelm repeatedly plate-solves the sky and shows you exactly how to reach your target. CENTER: When the reticle reaches the target, look through the eyepiece—or start your exposure. BUILT FOR THE GEAR YOU ALREADY OWN AstroHelm works with manual telescopes and cameras without requiring a specific telescope brand or proprietary accessory. It can also integrate with compatible astronomy software and equipment using standard telescope-control protocols. Whether you're exploring the sky with a Dobsonian or framing a deep-sky object with a camera, AstroHelm gets you from “I want to see that” to “there it is.”
Screenshots
Verdict
The clearest difference is in-app purchases: Lehmann Gallery at none against AstroHelm's 3. Lehmann Gallery also leads on rating (5.0 vs 4.6) and iOS requirement (14.0 vs 17.0). AstroHelm's advantage is update cadence (every 2 weeks vs every 40 months) and ratings volume (7 vs 1). On price, 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
Both are free to download. AstroHelm sells 3 one-off in-app purchases. Lehmann Gallery asks for nothing beyond the download.
Lehmann Gallery holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: AstroHelm has 7 ratings behind it against 1, so its average is the more settled of the two.
Lehmann Gallery ships an update every 40 months, AstroHelm every 2 weeks. The most recent releases landed on October 9, 2026 and October 21, 2026 respectively.
| Parameter | Lehmann Gallery | AstroHelm |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.6 (7 ratings) |
| Positive reviews | — | 87.5% of reviews |
| Number of ratings | 1 | 7 — better |
| Update frequency | Every 40 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 9 MB | 73 MB |
| Age rating | 12+ | 4+ |
| Developer | Loba | Pacizu LLC |
Customer experience
Lehmann Gallery
AstroHelm
In-app purchases
Lehmann Gallery
No in-app purchases
AstroHelm
- AstroHelm Plus$9.99
- Plus to Pro Upgrade$19.99
- AstroHelm Pro$29.99






