Comparison

GuiTuner vs Spark

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

Head to head
About

GuiTuner

This application offers a highly accurate and visually appealing way to tune your guitar. It provides a straightforward tuning experience without any advertisements or user tracking.

Highlights
  • High accuracy tuning
  • Pleasing graphics
  • Ad-free experience
  • No user tracking
  • Easy to use
Features
Read full description

An easy-to-use Guitar tuner, with high accuracy and nice graphics! No ads or tracking, just tune your guitar!

About

Spark

This intelligent amp and app combination creates a virtual band that learns your playing style to generate accompanying bass and drums. Access millions of songs with auto-displayed chords, over 10,000 tones, and voice command functionality. It's designed to enhance your practice and performance experience.

Highlights
  • Auto chord display for millions of songs
  • Smart Jam with AI-generated bass and drums
  • Voice command control
  • BIAS tone engine with 10,000+ presets
  • Tempo control and looping for practice
  • Realistic virtual tube amps and effects
Features
Read full description

The smart amp and app that jam along with you using intelligent technology. Play and practice with millions of songs and access over 10,000 tones powered by our award-winning BIAS tone engine. *Auto Chords* Automatically display chords for millions of songs. Choose any song, and Spark will auto display its chords in real-time as you play. Easy controls let you slow down the song’s tempo or loop a difficult section as you master playing it. *Smart Jam* The Spark amp and app work together to learn your style and feel, and then generate authentic bass and drums to accompany you. It’s a smart virtual band that goes wherever you go! *Voice Command* The Spark app responds to your voice commands. Tell it to stream a rock song or a blues backing track, or ask for a virtual band to follow your playing. *Tone Engine* Whether you play pristine melodies, crunchy chords or soaring leads, Spark gives you a full amp modeling and multi-effects engine, powered by Positive Grid’s state-of-the-art BIAS with the most realistic virtual tube amps and effects on the planet. *Requires Spark Amp* *10,000+ Tones* The Spark app provides over 10,000 killer guitar and bass amp -and-FX presets from famous guitarists, professional session players, expert studio engineers and hit-making producers from around the world. If you have any questions or feedback, contact us via https://help.positivegrid.com/hc/en-us/requests/new

Screenshots

GuiTuner2 screens
Spark4 screens

Verdict

The call

The clearest difference is review sentiment: Spark at 55% against GuiTuner's 0%. Spark also leads on update cadence (every 2 weeks vs every 46 months). GuiTuner's advantage is in-app purchases (none vs 1). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Spark sells 1 one-off in-app purchase. GuiTuner asks for nothing beyond the download.

UpkeepUpdate frequency

GuiTuner ships an update every 46 months, Spark every 2 weeks. The most recent releases landed on October 6, 2026 and October 17, 2026 respectively.

Scorecard4 real differences · 6 level
GuiTuner versus Spark: the parameters behind the verdict, then further details
ParameterGuiTunerSpark
PriceFreeFree
Rating—4.8 (25K ratings) — better
Positive reviews0.0% of reviews54.9% of reviews — better
Number of ratings—25K — better
Update frequencyEvery 46 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.4 — better15.0
Further details — not scored
Size15 MB562 MB
Age rating4+17+
DeveloperYUBIPositive Grid Inc

Customer experience

GuiTuner

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Spark

All ratings24,887 ratings
Positive97.4%
Neutral1.3%
Negative1.4%
Written reviews661 reviews
Positive54.9%
Neutral13.0%
Negative32.1%

Bugs and requests

GuiTuner

Not enough reviews yet to summarise bugs or requests.

Spark

Reported bugs

5 issues
  • App frequently disconnects from amp
  • Tone selection issues and inconsistencies
  • Sudden loud noises or feedback from amp
  • Firmware update process is cumbersome
  • Spotify integration not working as advertised

Requested features

6 requests
  • Add looping functionality
  • Improve auto-chord detection and playback
  • Allow more customization of signal chain and effects
  • Integrate with more music services beyond Spotify
  • Add EQ controls for Bluetooth speaker mode
Show 1 more
  • Sync saved tones across devices

In-app purchases

None

GuiTuner

No in-app purchases

1 purchases

Spark

One-time1
  • Experience Jimi Hendrix™$19.99

Questions

Is GuiTuner free?
GuiTuner is free to download, with no in-app purchases.
Is Spark free?
Spark is free to download, with in-app purchases available.
Do GuiTuner or Spark have ads?
Neither GuiTuner nor Spark shows ads.
Which is updated more often, GuiTuner or Spark?
GuiTuner ships an update every 46 months, and Spark every 2 weeks. Most recently, GuiTuner was updated on October 6, 2026 and Spark on October 17, 2026.

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