Nebula vs PerfectFit® Ring Sizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nebula
Discover a vast collection of stunning, high-quality live wallpapers with fluid animations and vibrant colors. Generate custom live wallpapers from your music or voice, featuring animated sound waveforms. This app offers a unique way to personalize your device's background.
- Stunning live wallpaper collection
- High-quality fluid animations
- Vibrant colors
- Generate live wallpapers from music
- Generate live wallpapers from voice
- Animated sound waveforms
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Temporary promotional sale from $2.99 to just $0.99. Don't miss it. The Worlds Best Collection Of Live Wallpapers for iOS. Nebula is a collection of some of the most stunning, mesmerizing, most sought out live wallpapers on the App Store. High quality, fluid animations and vibrant colors that are unmatched,really! We've also included a highly unique feature that allows you to Generate Live Wallpapers using your favorite music or voice. You can then send those to your loved ones and they'll have the waveform generated by your sound animating their wallpaper that they'll see hundreds of times a day! We’ve set out to create,acquire the worlds most unique and best Live Wallpapers. With Nebula we’ve created, acquired,curated some of the best live wallpapers with the help of some of our users. We started with a large library of wallpapers and curated them and now we’ve got the very best and we’re going to be bringing more and more as we shift more of our attention from the development phase to the launch phase. We’re exited to bring another Live Wallpapers app and this one is our best one yet! Note: Live Wallpapers only work on devices that support 3D Touch, as of now the only devices that support 3D Touch are the following: iPhone X iPhone 8 Plus iPhone 8 iPhone 7 iPhone 7 Plus iPhone 6s iPhone 6s Plus If your device does not support 3D Touch you will be able to view the wallpapers and they will be animated, however you will not be able set them as Live Wallpapers, but only as stills. To activate the live wallpapers make sure you're not using 'low power mode' and use more pressure on the lock screen to activate the animation. All wallpapers are either created, owned or licensed by Unicorn Apps. By downloading you agree to the terms of use. Read: www.unicornapps.com/nebula-terms-of-use/ If you have any questions please reach out at: support@unicornapps.com © Unicorn Apps 2017
PerfectFit® Ring Sizer
Accurately measure your ring size for any finger using advanced technology. This app eliminates the need for manual fittings and seamlessly integrates with online jewelry stores, solving sizing issues for e-commerce.
- Accurate to 1/8 sizes
- Works on any mobile device
- International sizing conversion
- E-commerce integration
- Customizable skinning
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The ring size measuring app that gives you an accurate ring size for any finger in just a few clicks. Our patent-pending technology provides a seamless solution that takes away the need for a manual fitting, solving the sizing issue for any jewelry e-tailer. - Accuracy down to 1/8 sizes for any finger - Works on any mobile device - Easy conversion to international sizing - Seamless integration with e-commerce sites - No more sending out sizers - Available to be custom skinned
Screenshots
Verdict
The clearest difference is review sentiment: Nebula at 56% against PerfectFit® Ring Sizer's 0%. Nebula also leads on rating (4.5 vs 2.5) and ratings volume (251 vs 2). PerfectFit® Ring Sizer's advantage is update cadence (every 2 months vs every 6 months) and chart position (#198 vs unranked). On price, 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
Nebula costs $0.99 and PerfectFit® Ring Sizer $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Nebula holds the better App Store score, 4.5 against 2.5. That said, the two scores are not equally well evidenced: Nebula has 251 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 56% of Nebula's written reviews are positive against 0% of PerfectFit® Ring Sizer's.
Nebula ships an update every 6 months, PerfectFit® Ring Sizer every 2 months. The most recent releases landed on October 19, 2026 and October 14, 2026 respectively.
| Parameter | Nebula | PerfectFit® Ring Sizer |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 4.5 (251 ratings) — better | 2.5 (2 ratings) |
| Positive reviews | 55.9% of reviews — better | 0.0% of reviews |
| Number of ratings | 251 — better | 2 |
| Update frequency | Every 6 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | — | #198 — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 10.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 37 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Ronan Stark | Radius Technologies |
Customer experience
Nebula
PerfectFit® Ring Sizer
Bugs and requests
Nebula
Reported bugs
8 issues- Animations not working
- Wallpapers not loading
- App crashes when viewing wallpapers
- Music sync creator not working
- Border not working, only keyboard
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- Compatibility problem with iOS 12
- Images lose quality upon download
- Poor quality makes screen look old
Requested features
6 requests- Make animations work
- Improve wallpaper loading speed
- Ensure compatibility with all devices/iOS versions
- Provide high-resolution wallpapers for all phone sizes
- Fix music/sound functionality
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- Allow microphone use for sounds
PerfectFit® Ring Sizer
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Nebula
No in-app purchases
PerfectFit® Ring Sizer
No in-app purchases
Questions
Is Nebula free?
Is PerfectFit® Ring Sizer free?
Which has better reviews, Nebula or PerfectFit® Ring Sizer?
Do Nebula or PerfectFit® Ring Sizer have ads?
Which is updated more often, Nebula or PerfectFit® Ring Sizer?
Other comparisons
