Head-to-head · Musical Tuner Apps
JustATuner vs insTuner
JustATuner leads on 0 checks, insTuner on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreJustATuner · 7.4/10
- Free planboth
JustATuner scores higher on our rubric for musical tuner apps: 7.4 against 6.9 out of 10; our editors rank them #5 and #8.
On available platforms, JustATuner gives you Desktop where insTuner offers Ios.
JustATuner is the better fit for desktop users exploring advanced intonation. insTuner is the better fit for iOS users needing visual tuning analysis.
- JustATuner fits best
Desktop users exploring advanced intonation
- insTuner fits best
iOS users needing visual tuning analysis
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Side by side
| Feature | JustATuner 7.4/10 Visit ↗ | insTuner 6.9/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 7.4 | 6.9 |
| Ranking | #5 in Musical Tuner Apps | #8 in Musical Tuner Apps |
| Best for | Desktop users exploring advanced intonation | iOS users needing visual tuning analysis |
| Pricing model | Free | Free plan + paid |
| Starting price | Not published | Not published |
| Free plan | ✓ | ✓ |
| Free trial | — | — |
| Deployment | Desktop | Mobile |
| Platforms | Windows, macOS, Linux | iOS |
| Support | ||
| Built for | Solo | Solo, Small business |
| Features JustATuner 3/5 · insTuner 3/5 | ||
| Strobe display | ✓ | ✓ |
| Alternate tunings | Not published | Not published |
| Custom reference pitch | ✓ | ✓ |
| Intonation monitoring | ✓ | ✓ |
| Offline mode | Not published | Not published |
| Specs | ||
| Available platforms | Desktop | Ios |
| Our review | ||
| Pros |
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| Cons |
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| Our verdict | JustATuner is a free, open-source desktop tuner for musicians who want more than a basic pitch indicator. Its core is a 12-wheel chromatic stroboscopic tuner, supported by configurable reference pitch, transposition for concert, B♭, E♭,… Read the review → |
insTuner is a chromatic tuner for guitar, bass, piano, bowed strings, brass, woodwinds, drums, and other instruments. It detects pitch through a device microphone, line-in, or configurable input channels. The app is aimed at iOS musicians… Read the review → |
Strengths and trade-offs
JustATuner — where it wins
- 12-wheel chromatic stroboscopic tuner with live cents readout
- Just-intonation drones with selectable roots, voicings, and sounds
- Free, open-source support for Windows, macOS, and Linux
Where it doesn't
- Desktop-only coverage excludes phone and tablet tuning
- The broad visualizer set may feel excessive for basic tuning
- Advanced bias and transposition controls require focused setup
insTuner — where it wins
- Free plan includes instant tuning and tone generation
- Pro adds strobe, FFT, spectrogram, and tuning history
- Supports custom temperaments, transposition, and adjustable A4
Where it doesn't
- Available only on iOS
- Advanced analysis features require the Pro plan
- Paid listing version history displayed ends in 2015
- JustATuner7.4/10 · Free plan
A deep, free tuner for desktop musicians working beyond basic pitch matching.
Visit JustATunerFull verdict → - insTuner6.9/10 · Free plan
A capable iOS tuner for musicians who want visual pitch analysis and flexible references.
Visit insTunerFull verdict →
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All musical tuner apps comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
Last updated · How we research and update