Comparison

Sting 25 vs NuRack Auv3 FX Processor

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sting 25

Explore the 25-year solo career of a renowned musician through exclusive concert footage, interviews, and personal stories. Discover influences, activism, and artistry with unparalleled access to rare photos and handwritten lyrics.

Highlights
  • Exclusive concert footage
  • Behind-the-scenes access
  • In-depth interviews
  • Handwritten lyrics and journal entries
  • 360 degree instrument views
  • Chronological career chapters
Features
Read full description

To celebrate his 60th birthday, Sting performed at the Beacon Theatre with friends including Bruce Springsteen, Lady Gaga, Stevie Wonder, Robert Downey, Jr., and many more. In Sting 25, watch exclusive footage of performances from the benefit concert, then dive into an exploration of Sting's 25 year solo career: the life, influences, activism and artistry of one of the greatest musicians of our time. With unparalleled access to seminal performances, rare photos, and personal stories, this comprehensive appumentary depicts the past 25 years of Sting’s career as a renowned musician and humanitarian. Discover the evolution of Sting’s solo career, the influences that have shaped his music, and his ongoing efforts as a global citizen and activist. The many facets of his career come to life in this appumentary through handwritten lyrics and journal entries, rare and intimate photos, in-depth interviews, and a variety of live concert footage, including EXCLUSIVE, all-star performances from his Sixtieth Birthday Celebration at the Beacon Theatre. • Exclusive concert footage and behind-the-scenes access from Sting’s Sixtieth Birthday Celebration to benefit the Robin Hood Foundation, at New York City’s Beacon Theatre, featuring performances by: Bruce Springsteen, Lady Gaga, Stevie Wonder, Rufus Wainwright, Herbie Hancock, and Branford Marsalis. • Using dual-screen AirPlay, experience these performances wirelessly on your television while exploring additional content on your iPad. • Discover hours of concert footage, exclusive interviews, photos, music videos, and more in ten chronological chapters. • Learn about the inspirations, collaborations, and charitable endeavors that have shaped Sting’s 25 year solo career. • Interact with Sting’s signature instruments through 360 degree views and high definition zoom images. • Listen to Sting’s albums from your iPad’s library while browsing the app – you can also sample songs from each of his solo albums and purchase directly from the iTunes store. Sting 25 is generously supported by Chevrolet, with access provided by American Express, designed and developed by @radical.media.

About

NuRack Auv3 FX Processor

Design custom audio and MIDI effects racks with over 80 building blocks. Route audio in series or parallel and create unique interfaces for your sound processing needs.

Highlights
  • Design custom effects racks
  • Over 80 audio and MIDI building blocks
  • Full routing control (series/parallel)
  • Customizable interface builder
  • Seamless effect switching
  • 3 independent audio racks mode
  • Extensive automation options
Read full description

NuRack is an AUv3 based multi-channel audio and MIDI effects processor with a difference, it actually allows you to design your own custom effects using the 80+ building blocks provided. You have full control over routing which allows you to create complex audio paths in series or parallel. You can choose whether to use the stock interface or create your own custom interface using the built in Interface Builder which allows you to concentrate your audio components into a single customized effect. NuRack can run in one of two modes. The first providing 3 customizable effects racks which can be switched (manually or via MIDI), providing seemless switching (i.e. delay trails linger whilst another set of effects are faded in). The second mode allows you to route audio through 3 independent audio racks. A generaous number of over 80 audio and midi building blocks are provided covering 12 different categories of effects. Here are just some of those included in NuRack: Modulation Effects: Chorus, Flanger, Phaser, Tremolo, Vocal Doubler, TalkBox, UniVibe, Leslie & Vocoder. Time Based Effects: Stereo Delay, Tape Delay, Reverb and Reverse Delay. Spectral Effects: Parametric EQ, Graphic EQ, PitchShift, Auto-Pan, Bit-Crusher, Tube Overdrive, Distortion, Harmony, Harmonic Exciter and SlowMo. Dynamic Effects: VelocityControl, Compressor, Multi-Band Compressor, Noise Gate, Gate, and Limiter. Filter Effects: MultiFilter, LP/HP Filter, Frequency Splitter, MultiBand Splitter, Classic Filters, Formant Filter, Ring Modulation and Shelf Filter. MIDI Effects: MIDI Harmony, MIDI Velocity, MIDI Randomizer, MIDI Monitor, MIDI Mixer, MIDI Pads, MIDI Control, Strummer, MIDI Recorder, MIDI Modulation, MIDI Remap, CC Monitor, CC Generator, PitchBend, MIDI Time Clock, and ChordToMidi. Generator Modules: Noise, Audio Clip Launcher, SoundFont Player, Virtual Flute, Virtual Clarinet, Virtual Brass, FM Organ, FM Rhodes and Analog Sawtooth Synth. Automation: TouchPad, AutoMate, Pattern Automation, and Visual LFO. You also provide the ability to split and combine audio signal using splitters and mixer modules as well as a number of visual elements such as VU Meters, LED Meters, Scopes, Graphs etc. Some effects such as phaser and flanger are usually controlled by an LFO, but this can be detached and automated remotely. There are a number of modules that allow auomation based on direct touch (X/Y Pads), Visual LFO, Pattern Automation, MIDI input (CC data), or peak/rms level detection. These automation modules can remotely control knobs and sliders throughout your rack. Simply create a new rack and start adding modules to it. These modules are generally wired up automatically but these connections can be manually routed. Once you have your sound as you wish you can use it 'as is', or switch to Interface Builder mode where you can combine all your modules into a single interface. Elements can be dragged, dropped, resized and coloured as required. Add your own labels, image logos and custom backgrounds before saving your custom component. Use the X/Y Pad to control your modulation effects by detaching their LFO's. Use MIDI CC data to automate knobs. Use the velocity of an incoming signal to control the cutoff/resonance of a filter (wah) or volume level of a gain control (swell), as NuRack expands, so do the possibilities. Features: ○ Over 80 categorised modules. ○ 3 Input / Output busses supported. ○ Audio & MIDI effect. ○ Lots of audio & MIDI automation options. ○ Seemless transition between racks. ○ Manual audio path routing. ○ Open in presentation mode (auto hides controls). ○ Interface Builder to customize your rack. ○ AUv3 plugin runs in MIDI and none MIDI mode. ○ Add your own Text/Heading and Image/Logos and backgrounds to your design. ○ Compatibility options for DAW's not supporting multi-channels. ○ Dark/Light Modes Checkout the YouTube channel 'Paul the MusicMan' for demos and tutorials of NuRack.

Screenshots

Sting 253 screens
NuRack Auv3 FX Processor4 screens

Verdict

The call

The clearest difference is price: Sting 25 at Free against NuRack Auv3 FX Processor's $12.99. Sting 25 also leads on iOS requirement (8.0 vs 13). NuRack Auv3 FX Processor's advantage is rating (4.7 vs 3.9) and review sentiment (84% vs 65%). On ratings volume, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Sting 25 is free to download; NuRack Auv3 FX Processor costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

NuRack Auv3 FX Processor holds the better App Store score, 4.7 against 3.9. Both are backed by a comparable volume of ratings — 15 and 41 respectively. Written reviews point the same way: 65% of Sting 25's written reviews are positive against 84% of NuRack Auv3 FX Processor's.

UpkeepUpdate frequency

Sting 25 ships an update monthly, NuRack Auv3 FX Processor every 3 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
Sting 25 versus NuRack Auv3 FX Processor: the parameters behind the verdict, then further details
ParameterSting 25NuRack Auv3 FX Processor
PriceFree — better$12.99
Rating3.9 (15 ratings)4.7 (41 ratings) — better
Positive reviews64.5% of reviews84.4% of reviews — better
Number of ratings1541 — better
Update frequencyMonthlyEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better13
Further details — not scored
Size1.6 GB26 MB
Age rating4+4+
DeveloperRadicalMedia, LLC4Pockets.com

Customer experience

Sting 25

All ratings14 ratings
Positive71.4%
Neutral7.1%
Negative21.4%
Written reviews124 reviews
Positive64.5%
Neutral8.1%
Negative27.4%

NuRack Auv3 FX Processor

All ratings42 ratings
Positive92.9%
Neutral2.4%
Negative4.8%
Written reviews32 reviews
Positive84.4%
Neutral6.3%
Negative9.4%

Bugs and requests

Sting 25

Reported bugs

13 issues
  • Concert video playback fails or crashes
  • No audio or sound in video content
  • App hangs at splash screen and won't load
  • Videos freeze and buffer continuously
  • App crashes when tapping on concert footage
Show 8 more
  • Downloaded videos won't play after updates
  • App becomes unresponsive and requires force-quit
  • Incompatibility with iOS 11+ and newer iOS versions
  • Purchase links redirect to iTunes instead of in-app purchase
  • App icon remains after deletion and cannot be reinstalled
  • Voice-over accessibility completely disabled
  • Slow loading of images and content
  • Music stops playing when switching apps

Requested features

9 requests
  • Full concert performances available for purchase or download
  • Release entire concert on Blu-Ray
  • Regular content updates with new concert footage and behind-the-scenes material
  • Ability to purchase and download birthday concert performances
  • Background music persistence when switching between apps
Show 4 more
  • Better accessibility support for vision-impaired users
  • Improved video streaming performance
  • Information on acting projects and collaborations
  • Offline playback capability for downloaded videos

NuRack Auv3 FX Processor

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Sting 25

No in-app purchases

None

NuRack Auv3 FX Processor

No in-app purchases

Questions

Is Sting 25 free?
Sting 25 is free to download, with no in-app purchases.
Is NuRack Auv3 FX Processor free?
NuRack Auv3 FX Processor costs $12.99, with no in-app purchases.
Which has better reviews, Sting 25 or NuRack Auv3 FX Processor?
NuRack Auv3 FX Processor is rated higher. Sting 25 averages 3.9 out of 5 from 15 ratings, while NuRack Auv3 FX Processor averages 4.7 from 41 ratings.
Do Sting 25 or NuRack Auv3 FX Processor have ads?
Neither Sting 25 nor NuRack Auv3 FX Processor shows ads.
Which is updated more often, Sting 25 or NuRack Auv3 FX Processor?
Sting 25 ships an update monthly, and NuRack Auv3 FX Processor every 3 weeks. Most recently, Sting 25 was updated on November 1, 2026 and NuRack Auv3 FX Processor on November 3, 2026.

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