Sci vs Pebble Core
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sci
Customize your home screen with unique sci-fi themed widgets. Display various information like clocks, calendars, system stats, and fitness data with extensive styling options. Create multiple widgets in different sizes with personalized layouts, backgrounds, fonts, and colors.
- Customizable sci-fi widget styles
- Display clocks, calendars, system info
- Show fitness data (steps, distance)
- Multiple widget sizes (Large, Medium, Small)
- Personalize layout, background, fonts, colors
- Use custom background images
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Add some Sci-Fi to your Home Screen. This widget making tool is for displaying many types of information with great styling customization. You can display multiple widgets, all with their own unique style and info in Large, Medium, and Small widget sizes You can change the layout, background, fonts and colors, and even use your own images. *Offline contains the pre-made template backgrounds, but the background selection section needs internet to download from online. DISPLAYABLE INFORMATION: • Digital clock • Analog clock (some with second hand to show a little animation) • Calendar • Date/Day • System info (battery, brightness, memory, storage) • Countdown/Days since • Step count - Distance - Floors • Display contacts (just opens this widget app) These are generic sci-fi styles to to keep the coolness of how designers imagined future interfaces past and present on low and high budgets, but actual display real information instead of meaningless gobbledygook. * Please do not ask in reviews or by mail to include any trademarked names, logos, images or other properties. NSTEnterprises respects copyrights and will not include them.
Pebble Core
Manage your Pebble smartwatch, Index 01 ring, and other Core Devices products. Pair devices, customize settings, and explore a gallery of watchfaces, apps, and tools. Sync health data and control notifications.
- Bluetooth pairing
- Watchface and app gallery
- Firmware updates
- Notification control
- Health data sync
- Developer tools
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Pebble Core is the official iPhone app for managing your Pebble smartwatch, Pebble Index 01 ring and other Core Devices products. Pair your watch and/or ring, customize your settings, and discover a growing ecosystem of watchfaces, apps, and tools designed for your device. Features include: • Bluetooth pairing and reconnection • Watchface and app gallery browsing • Firmware updates and bug reporting • Notification control and preferences • Health data sync (steps, sleep, heart rate*) • Developer tools for sideloading and debugging This app supports all Core Devices smartwatches (Pebble 2 Duo, Pebble Time 2, Pebble Round 2), Pebble Index 01 ring, and older Pebble models (Pebble, Pebble Steel, Pebble Time, Time Steel, Time Round, and Pebble 2) Built for long battery life, fast sync, and full compatibility. This app is open source - https://github.com/coredevices/mobileapp.
Screenshots
Verdict
The clearest difference is price: Pebble Core at Free against Sci's $3.99. Pebble Core also leads on rating (4.5 vs 4.0) and update cadence (every 11 days vs every 3 months). On ratings volume, ads, in-app purchases and monetization model 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
Pebble Core is free to download; Sci costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Pebble Core holds the better App Store score, 4.5 against 4.0. Both are backed by a comparable volume of ratings — 48 and 74 respectively. Written reviews point the same way: 56% of Sci's written reviews are positive against 70% of Pebble Core's.
Sci ships an update every 3 months, Pebble Core every 11 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.
| Parameter | Sci | Pebble Core |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 4.0 (48 ratings) | 4.5 (74 ratings) — better |
| Positive reviews | 55.6% of reviews | 70.5% of reviews — better |
| Number of ratings | 48 | 74 — better |
| Update frequency | Every 3 months | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 186 MB | 164 MB |
| Age rating | 4+ | 12+ |
| Developer | NSTE, LLC | Core Devices LLC |
Customer experience
Sci
Pebble Core
User reviews
Sci
From 48 App Store ratingsWhat we love
- 👍 Great Star Trek theme
- 👍 Highly customizable widgets
- 👍 Good for sci-fi fans
- 👍 Developer responsive to issues
- 👍 Can complete LCARS look
Room to improve
- 🐛 Doesn't work on iPhone 14
- 🐛 Widgets not recognized
- 🐛 Limited templates
- 🐛 Crashes frequently
- 🐛 Layout not showing correctly
Pebble Core
From 74 App Store ratingsWhat we love
- 🚀 Usable for basic functionality
- 👍 Works great
- 👍 No issues since installing
- 👍 Supports legacy Pebble watches
- 👍 Excited for the future
Room to improve
- 🔒 Requires restrictive Rebble login
- 🔒 Violates privacy
Bugs and requests
Sci
Reported bugs
19 issues- Empty box shown
- Unable to add widgets to lock screen
- Widgets not recognized
- Directions are vague
- Step-by-step directions disappear
Show 14 moreShow fewer
- App crashes
- Widgets are not flexible
- Old layout not possible after update
- Fonts not showing up same as in app
- Layout not showing up same as in app
- Preview differs from actual widget
- Stuck in build a clock settings
- Does not apply changes
- Not available in app store for iPhone SE 2022
- Clock is slow to refresh
- Widget does not update to military time
- No options to save clock design
- Does not work on Lock Screen
- Doesn't let you save it
Requested features
12 requests- More customization for widget backgrounds
- Option to make rectangle widgets bigger on iPad
- More options for Home and Lock Screen
- Add more templates
- Improve flexibility of templates
Show 7 moreShow fewer
- Add military time option
- Provide clear instructions for use
- Add more customization options
- Make app available for iPhone SE 2022
- Add more themes
- Improve widget refresh rate
- Make app work on Lock Screen
Pebble Core
Reported bugs
1 issue- None mentioned
Requested features
1 request- Standard email registration option
In-app purchases
Sci
No in-app purchases
Pebble Core
No in-app purchases









