Sound Tune vs FlexTune
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sound Tune
Enhance your car's audio system with advanced sound tuning capabilities. Easily adjust equalization, time alignment, and network modes directly from your smartphone to achieve high-end audio quality even with basic factory stereos.
- 31-band equalizer
- Time alignment
- 3-Way network mode
- Super "Todoroki" Sound
- Live simulation
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Pioneer’s Sound Tune app is a great way to bring the sound of high-end audio to a basic factory car stereo and speaker set. All operations are performed easily through a smartphone and a wide range of settings are accessible. Representative function 31BAND GEQ Time alignment 3-Way network mode Super "Todoroki" Sound Live simulation Compatible models DEQ-S1000A DEQ-S1000A2 Compatible OS iOS version11.0 or higer
FlexTune
Personalize your car's audio system with this app. Easily adjust bass, clarity, and other sound settings using a five-band equalizer and create custom profiles for different music or moods. Enjoy wireless control of your KICKER audio system.
- Variable Five-Band Parametric Equalizer
- Multiple Custom Presets
- Remote KICKER Subwoofer Gain
- Adjustable Center-Image Control
- Bluetooth LE Enabled
- Wireless Control
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Congratulations on your new vehicle. Now it’s time to make your sound personal! KICKER® FlexTune™ works seamlessly with your phone, tablet and your new KICKER audio system to personalize your sound. Increase the clarity? No problem. Want more KICKER bass? Turn one knob. Easily tweak the audio with a touch of the graphic five-band equalizer, right from your phone or tablet screen. You’ll hear how much better it sounds from the very first touch! When your sound is perfect, save it as your own personal profile, or make multiple profiles to match your tunes, your spouse’s tunes, the kids’ tunes – or your mood! Features: • Variable Five-Band Parametric Equalizer • Multiple Custom Presets • Remote KICKER Subwoofer Gain • Adjustable Center-Image Control • Bluetooth LE® Enabled • Completely Wireless Control
Screenshots
Verdict
The clearest difference is review sentiment: FlexTune at 40% against Sound Tune's 20%. FlexTune also leads on iOS requirement (8.2 vs 11.0). Sound Tune's advantage is rating (3.0 vs 2.8) and update cadence (every 2 months vs every 3 months). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Sound Tune holds the better App Store score, 3.0 against 2.8. Both are backed by a comparable volume of ratings — 35 and 10 respectively. Written reviews complicate that: 20% of Sound Tune's written reviews are positive against 40% of FlexTune's, so the app with the better star average is not the one people write more warmly about.
Sound Tune ships an update every 2 months, FlexTune every 3 months. Both last shipped on November 2, 2026.
| Parameter | Sound Tune | FlexTune |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (35 ratings) — better | 2.8 (10 ratings) |
| Positive reviews | 19.6% of reviews | 40.0% of reviews — better |
| Number of ratings | 35 — better | 10 |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 | 8.2 — better |
| Further details — not scored | ||
| Size | 112 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Pioneer Corporation | Kicker |
Customer experience
Sound Tune
FlexTune
In-app purchases
Sound Tune
No in-app purchases
FlexTune
No in-app purchases
