Sci vs Slideshow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sci
Personalize your device with a vast collection of sci-fi and space-themed wallpapers for your home and lock screens. Enhance your experience with customizable Home Screen Image Widgets, allowing you to display your favorite images.
- 250+ widget backgrounds
- Variety of home/lock screen wallpapers
- Customizable Home Screen Image Widget
- Add your own images to widgets
- Parody sci-fi display styles
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Customize your iPhone or iPad with Sci-Fi and Space wallpapers, Home Screen Image Widgets, and Clock/Date Widgets. INCLUDES: - 260+ square and rectangle Image Widget Backgrounds in many styles (or add your own images) - 130+ backgrounds or use a color gradient for the Clock/Date Widget - Icon packs in 13 styles with 2,000+ icons to set with the Shortcuts app - A large variety of wallpaper for Home / Lock screens to perfectly fit every size iPhone / iPad (Always adding more wallpaper, so check periodically) WIDGET DIRECTIONS Add a widget to your home screen in the usual way (long press the home screen and when in jiggly mode press the '+' on top. Scroll down to Sci-Fi Themes and select the size you want [do this for each size you want]). Long press the widget to change the theme from the images you set in the app. Some of the Sci-Fi styles are modeled after popular sci-fi shows and movies. The look like they should work, even with indecipherable meaning or function. And just like the props, iOS gives them the same functionality - NONE. It's parody how the sci-fi designers thought future displays would look while being impossible to use. *These are generic images. Please do not ask me in reviews or by mail to include any trademarked names, logos, images or other properties. I respect copyrights and will not include them. If used in tandem with my calculator widget, icon maker, widget maker, keyboard, and ringtones apps, you can really create a fuller theme.
Slideshow
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【Photo Slideshow】is a professional-grade mobile video editor designed for creating polished slideshows and video projects with intuitive controls and local AI processing. AI-Powered Editing Utilize on-device AI features to enhance your videos and photos with automatic scene detection, smart cropping, and style recommendations. Advanced Timeline Editing Organize your media with a precise timeline editor that supports multiple tracks, drag-and-drop reordering, and frame-accurate adjustments. Sleek Dark Interface Work comfortably in any environment with a modern dark-themed UI that reduces eye strain and keeps the focus on your content. Privacy-Focused Processing All editing operations are performed locally on your device, ensuring your personal media remains secure and never uploaded to external servers. Local-First Architecture Experience fast, responsive editing with no dependence on internet connectivity, as all features and processing happen directly on your device. Photo Slideshow combines professional editing capabilities with privacy-first design, making it suitable for users who value both creative control and data security. Premium Account Pricing and Terms $ 4.99/week* $ 39.99/year* *Prices shown are in U.S. dollars; actual charges may be converted to your local currency. Payment will be charged to your iTunes account at confirmation of purchase. Subscriptions automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period, and the renewal cost will be provided. Subscriptions can be managed by the user. Turning off auto-renewal may be done by going to your account settings after purchase. Cancellation of the current subscription is not allowed during the active subscription period. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://ruychao.xyz/huandengxiangce/privacy.html
Screenshots
Verdict
The clearest difference is price: Slideshow at Free against Sci's $3.99. Slideshow also leads on update cadence (every 6 weeks vs every 6 months). Sci's advantage is in-app purchases (none vs 2) and chart position (#25 vs unranked). On 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
Slideshow is free to download; Sci costs $3.99 up front. Slideshow sells 2 in-app purchases, starting at $4.99 per 7 days. Sci asks for nothing beyond the download.
Sci ships an update every 6 months, Slideshow every 6 weeks. The most recent releases landed on October 30, 2026 and October 9, 2026 respectively.
| Parameter | Sci | Slideshow |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 3.3 (55 ratings) — better | — |
| Positive reviews | 53.7% of reviews | — |
| Number of ratings | 55 — better | — |
| Update frequency | Every 6 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Best chart rank | #25 — better | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.6 | 16.0 — better |
| Further details — not scored | ||
| Size | 44 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | NSTE, LLC | Hong Kong Trillion Industrial Technology Group Limited |
Bugs and requests
Sci
Reported bugs
10 issues- Unknown error when downloading wallpapers
- Widgets not showing as an option to add
- Wallpapers slightly off on iPhone 16 Pro Max
- Widgets don't refresh quickly
- Cannot add photo widget / Photo widget not working well
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- App doesn't work on iPad / Cannot use arrow button to download
- Error message when trying to download photos
- Lock screen widgets go over desired parts of wallpaper
- Widget doesn't show as an option in adding widgets
- When pinned on iPhone, says 'sc fi themes' under each widget
Requested features
10 requests- Update for newer iPhone models (iPhone 17)
- More animated wallpapers/live wallpaper options
- More variety in sci-fi themes (e.g., Star Wars)
- Ability to have multiple different widgets
- Widgets that don't display app name
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- More customization for widgets (e.g., colors, animation)
- Fix alignment issues for specific phone models (iPhone 15 Pro Max, iPhone 13 Pro Max)
- More wallpaper options per size
- Option to have same wallpaper in both horizontal and vertical
- More comprehensive theme packages (including icons)
Slideshow
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sci
No in-app purchases
Slideshow
- Weekly Max3 Days trial$4.997 Days
- Yearly Max$39.991 Year









