Comparison

Sting 25 vs GuitarKampus

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

GuitarKampus

This music app features a precision tuner, a customizable metronome, and a smart sheet music library supporting various formats. It also includes an intelligent slow player to help master challenging musical passages by adjusting speed and pitch.

Highlights
  • Precision tuner with standard and custom modes
  • Customizable metronome with tempo and time signatures
  • Smart sheet music library for PDF and Guitar Pro files
  • Intelligent slow player for speed and pitch adjustment
  • Looping functionality for practice sections
Features
Read full description

Core Feature Highlights:​​ ​Precision Tuner​ The built-in high-accuracy tuner supports ​standard and custom tuning modes, enabling fast calibration to keep your instrument perfectly in tune. ​Pro Metronome​ Customize ​tempo, time signatures, and sound effects​ to sharpen your rhythm skills and elevate your performance precision. ​Smart Sheet Music Library​ Import and view scores in ​PDF, Guitar Pro (GPX/GP5/GP)​, and other formats. Practice anytime, anywhere, and organize your collection effortlessly with advanced management tools. ​Intelligent Slow Player​ Tackle challenging phrases! Import audio to ​adjust speed and pitch independently, loop specific sections, and master every note with crystal-clear clarity.

Screenshots

Sting 253 screens
GuitarKampus4 screens

Verdict

The call

The clearest difference is review sentiment: Sting 25 at 65% against GuitarKampus's 0%. Sting 25 also leads on rating (3.9 vs 1.0) and update cadence (monthly vs every 3 months). GuitarKampus's advantage is monetization model (free vs paid). On price, ads, in-app purchases and device support 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Sting 25 holds the better App Store score, 3.9 against 1.0. That said, the two scores are not equally well evidenced: Sting 25 has 15 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 65% of Sting 25's written reviews are positive against 0% of GuitarKampus's.

UpkeepUpdate frequency

Sting 25 ships an update monthly, GuitarKampus every 3 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

Scorecard6 real differences · 4 level
Sting 25 versus GuitarKampus: the parameters behind the verdict, then further details
ParameterSting 25GuitarKampus
PriceFreeFree
Rating3.9 (15 ratings) — better1.0 (2 ratings)
Positive reviews64.5% of reviews — better0.0% of reviews
Number of ratings15 — better2
Update frequencyMonthly — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better14.0
Further details — not scored
Size1.6 GB28 MB
Age rating4+4+
DeveloperRadicalMedia, LLCZHU QIONG

Customer experience

Sting 25

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

GuitarKampus

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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

GuitarKampus

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Sting 25

No in-app purchases

None

GuitarKampus

No in-app purchases

Questions

Is Sting 25 free?
Sting 25 is free to download, with no in-app purchases.
Is GuitarKampus free?
GuitarKampus is free to download, with no in-app purchases.
Which has better reviews, Sting 25 or GuitarKampus?
Sting 25 is rated higher. Sting 25 averages 3.9 out of 5 from 15 ratings, while GuitarKampus averages 1.0 from 2 ratings.
Do Sting 25 or GuitarKampus have ads?
Neither Sting 25 nor GuitarKampus shows ads.
Which is updated more often, Sting 25 or GuitarKampus?
Sting 25 ships an update monthly, and GuitarKampus every 3 months. Most recently, Sting 25 was updated on November 1, 2026 and GuitarKampus on October 30, 2026.

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