Solar Arc vs BatchMark
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Solar Arc
Track the sun and moon's position and light conditions throughout the day. Ideal for photographers, hikers, and stargazers, it provides precise golden hour timings and a 52-week forecast for optimal planning.
- Live gradient line and arc visualizations
- Scrub through the day with drag gestures
- Sun, moon, or dual view
- Precise golden hour and blue hour timing
- 52-week forecast
- Activity-specific modes
- Multiple home screen widgets
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Golden hour happens every single day. Most people miss it. SolarArc makes sure you don't. - Chasing golden hour for a photo? Know the exact minute it starts. - Planning a sunrise hike? See the best trail windows at a glance. - Wondering when the moon rises tonight? It's right there on your screen. SolarArc is a sun and moon tracker that feels like looking out the window. Every view shifts with the real sky - warm when the light is warm, dark when the sky is dark. THE GRADIENT LINE Your entire day, painted in one line. Dawn amber bleeds into midday blue, then sunset orange, then deep navy night. Golden hour glows. Blue hour cools. You can read the exact times, or just glance at the color and know where you are in the day. THE ARC The sun and moon traced across your sky in real time. Watch them rise, climb, and fall against a live gradient that shifts with the actual light outside your window. Drag your finger across the arc to scrub through the day - the sky, the times, and the numbers all move with you. View the sun alone, the moon alone, or both together. THE MOON Know when to look up. SolarArc renders tonight's moon with the correct phase shape on the arc. Plan around full moons. Catch a crescent at dusk. Know exactly how dark the sky will be. 52-WEEK FORECAST What will golden hour look like three Saturdays from now? How much daylight will you have on that hiking trip in April? Pick any date in the next year and see the full picture - sun, moon, and light - before you commit. FIVE WAYS TO USE THE SKY Photography - Golden hour and blue hour, down to the minute. Stop guessing when to shoot. Hiking - Best trail windows and how much daylight is left. Know when to turn around. Screens - A screen curfew that follows the sun. Wind down as the sky does. Gardening - When to water, when to protect, and how many sun hours your plants get today. Stargazing - When true darkness begins. The best window to see everything above you. FEATURES - Live gradient line and arc visualizations - Drag to scrub through any moment of the day - Sun view, moon view, or dual view - Golden hour and blue hour timing - Moonrise, moonset, phase, and illumination - 52-week forecast for any date - Five activity modes - Seven Home Screen widgets: sun and moon, line and arc, medium and large - Notifications for sunrise, sunset, and golden hour - Multi-location with automatic timezone handling - Available in English, Spanish, French, German, Italian, Portuguese, Korean, Japanese, Chinese (Simplified and Traditional), Ukrainian, and Russian - Built on NOAA solar and Meeus lunar algorithms - Fully offline. No tracking. No account required. WHAT IS GOLDEN HOUR? Golden hour is the short window after sunrise and before sunset when the light turns soft, warm, and directional. Photographers chase it. Hikers love it. SolarArc tells you exactly when it happens, wherever you are. EVERYTHING INCLUDED All seven widgets, the 52-week forecast, unlimited saved places, all five modes, and golden hour, sunrise, and sunset alerts. One purchase. No subscription. No ads. No in-app purchases. Made by Spruzzo Labs - a creative lab. Questions or ideas? hello@spruzzolabs.com
BatchMark
Easily add text or logo watermarks to multiple photos simultaneously. Enhance your images with frames, combine them into long stories, and extract color palettes. All processing is done on your device with no ads.
- Batch watermarking (text/logo)
- Photo framing and matting
- Create photo stories
- Customizable watermark templates
- Color palette extraction
- Batch filter application
- On-device processing
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Add text or logo watermarks to photos in batches with BatchMark. Apply your signature, combine photos into a long image, and finish your images with frames. Photo Stories (New) Turn finished photos into a story. BatchMark creates a cover that blends the colors of your photos, then saves the story as one long image or a full set of photos, ready for social posts or a photo album. Artwork Library (New) Your artworks, drafts, and Photo Stories live in one place. Pick up a draft anytime, and save Live Photos with their motion. Batch Processing, Up to 100 Photos BatchMark Pro lets you process up to 100 photos at once. Add text or logo watermark overlays, signature stamps, or tiled anti-theft watermarks in batches to protect your copyright. Fully Customizable Watermarks Adjust position, size, opacity, font, and spacing. Save your brand settings as templates and apply them again anytime, perfect for ecommerce product photos. Photo Framing Give your favorite photos gallery-style frames, mats, and layouts, so they feel more like a finished piece of art worth keeping. Color Walk Palettes Choose a photo, extract its colors, and turn them into a shareable color palette card. Pick from 17 layouts, including postcard, instant photo, calendar, stamp and circle frame. Five animated layouts save as Live Photos, and you can edit the date and the small label on every card. Color Walk also supports Live Photos, so the finished result can keep its motion. Batch Filters Apply the same filter to a selection of photos, then export in full resolution. Photos Stay on Your Device Photo editing and rendering happen on your device. Your photos are not uploaded to BatchMark. No ads. How It Works 1. Select your photos 2. Add a watermark, frame, filter, or story 3. Export and you are done Made For Photographers, online sellers, content creators, and anyone who wants a faster way to finish their photos. Subscriptions & Payments BatchMark offers auto-renewable subscriptions and a lifetime purchase. Available plans and prices are shown before purchase and may vary by country or region. Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel subscriptions in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: BatchMark at Free against Solar Arc's $2.99. BatchMark also leads on review sentiment (100% vs 65%) and rating (5.0 vs 4.6). Solar Arc's advantage is in-app purchases (none vs 5) and ratings volume (34 vs 4). On update cadence, ads, device support and iOS requirement 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
BatchMark is free to download; Solar Arc costs $2.99 up front. BatchMark sells 5 in-app purchases, starting at $0.99 per 7 days. Solar Arc asks for nothing beyond the download.
BatchMark holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Solar Arc has 34 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 65% of Solar Arc's written reviews are positive against 100% of BatchMark's.
Both ship on a similar rhythm, roughly every 5 days. Both last shipped on November 9, 2026.
| Parameter | Solar Arc | BatchMark |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.6 (34 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 64.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 34 — better | 4 |
| Update frequency | Every 5 days | Every 5 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 — better | 17.1 |
| Further details — not scored | ||
| Size | 6 MB | 207 MB |
| Age rating | 4+ | 4+ |
| Developer | Spruzzo Labs Inc. | 晨龙 于 |
Customer experience
Solar Arc
BatchMark
In-app purchases
Solar Arc
No in-app purchases
BatchMark
- Weekly Pro3 Days trial$0.997 Days
- Monthly Pro$3.991 Month
- 年度会员$39.991 Year
- Lifetime Holiday$39.99
- Lifetime Pro$79.99









