GuiTuner vs Spark
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- High accuracy tuning
- Pleasing graphics
- Ad-free experience
- No user tracking
- Easy to use
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An easy-to-use Guitar tuner, with high accuracy and nice graphics! No ads or tracking, just tune your guitar!
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.
- 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
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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
Verdict
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
Both are free to download. Spark sells 1 one-off in-app purchase. GuiTuner asks for nothing beyond the download.
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.
| Parameter | GuiTuner | Spark |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (25K ratings) — better |
| Positive reviews | 0.0% of reviews | 54.9% of reviews — better |
| Number of ratings | — | 25K — better |
| Update frequency | Every 46 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.4 — better | 15.0 |
| Further details — not scored | ||
| Size | 15 MB | 562 MB |
| Age rating | 4+ | 17+ |
| Developer | YUBI | Positive Grid Inc |
Customer experience
GuiTuner
Spark
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
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- Sync saved tones across devices
In-app purchases
GuiTuner
No in-app purchases
Spark
- Experience Jimi Hendrix™$19.99









