Tuniversal vs Scaler EQ
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tuniversal
This music practice tool offers a chromatic tuner, scale and interval practice, long note exercises, a metronome, and a pitch pipe. It's designed for woodwind and brass players, allowing customization for different instruments and tuning systems.
- Automatic chromatic tuner
- Scale and interval practice
- Long note practice with dynamics
- Metronome with tempo adjustment
- Pitch pipe for ear training
- Instrument transposition support
- Customizable tuning systems
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At last, a tuner app and practise tool that does not assume we are all guitar players! Tuniversal has been crafted to meet the needs of players of woodwind and brass instruments. No ads, sign-up or in app purchases! Tuniversal has 6 modes: (1) automatic tuner, (2) scale practise, (3) long note practise, (4) intervals practice, (5) metronome and (6) pitch pipe. Tuner: * Play a note, and Tuniversal will automatically detect the note you are playing and show if you are sharp or flat * Swipe between graphs showing the frequency of your note and the volume * Use this mode when you want Tuniversal to show if you are in tune. Scales, arpeggios, thirds and intervals: * Choose any key and scale type (major, harmonic minor, melodic minor, natural minor or chromatic) * Choose your practise mode (scales, thirds, arpeggios, intervals) and start note within the key * Tuniversal will count you in, show your chosen scale or notes, and track your pitch as you play * When you have finished, Tuniversal will score you for accuracy * You can also listen to your selected scale, thirds, intervals or arpeggio - great for training your ear. Just long press the play button! Long note practise: * Choose a note, the time you want to hold the note and dynamics (crescendo, decrescendo, swell or constant volume) * When you finish playing, Tuniversal will score you for accuracy in both dynamics and pitch! * Important: for best results, calibrate your loud and soft notes using the volume calibration feature under "settings" * Aim to keep your volume within the lines shown, whilst maintaining accurate pitch and a great tone. Pitch pipe: swipe to choose a note on the staff, and hit play to hear it. Use this mode to tune by ear. Metronome: set tempo using slider or tapping on the screen. Choose between traditional swinging metronome display or flashing metronome Settings: You can adjust: * Frequency of A: use this if your band or orchestra tunes to a frequency other than standard A440. You might also adjust the frequency of A if you are playing with a piano that has been tuned sharp or flat. * Your instrument : Tuniversal will automatically transpose the note played, based on your instrument choice. If you select a transposing instrument, the concert pitch note is also shown. Tuniversal will automatically adjust to the range and clef of your chosen instrument. * Volume calibration: Tuniversal will calculate the volume of your loud and soft notes, and use this information to score your long note practise * Tuning system: equal temperament or just intonation. See our website for more information! * Microphone sensitivity: Adjust to select how loud you must play for Universal to track your pitch. Set to “high” or “very high” if Tuniversal does not detect your playing. In noisy settings you might want to select “low” or “very low”. * Player skill: adjust to your ability. For beginners, Tuniversal will score your playing leniently. But for professionals, Tuniversal expects a high level of accuracy! * Centre frequency graph: You can tap on the frequency graph in tuner mode to clear and re-centre the graph. The graph will automatically centre on the frequency played, or tap to re-centre the graph on the note you have selected in "settings". * Force dark mode: You can choose to run the app in dark or light mode. * Headset mic: If you use Tuniversal with a headset, select whether you want to use the device mic or headset mic * Reset to defaults: Resets all settings
Scaler EQ
This application offers a unique approach to audio equalization by intelligently adjusting frequencies based on the detected key and scale of your music. It provides both musical enhancements and traditional EQ controls for detailed sound shaping.
- In-key EQ with harmonic band types
- Automatic key and scale detection
- Familiar EQ controls with added color
- Magic Shelf for enhanced low and high frequencies
- Mastering-grade limiters and meters
- Dynamic band control and sidechain input
- Standalone and AUv3 host compatibility
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Following on from the award-winning Scaler music theory plugin, Scaler EQ offers a remarkable new way to EQ with musicality and colour. By detecting the key and scale of your audio and enhancing only note frequencies in key with your song, and reducing only note frequencies that aren’t, Scaler EQ can provide a new spin on working with cuts and boosts, increasing the tonality behind your music and providing new harmonic avenues. And for when you just want a regular, fully-featured, modern EQ, Scaler EQ has you covered with its familiar workflow, large choice of band types, mid/side operation, dynamic bands, peak limiters, and stereo enhancement. You can easily apply classic mixing and mastering techniques used by professionals, with an extra optional musical edge. NOTE: We have designed Scaler EQ for iPad. It works on iPhone too with identical functionality but relies more on the two finger tap to zoom function. -The World’s First In-Key EQ -Simple Key Detection -Musician- and Producer-Friendly Band Types -The Magic Shelf -Mastering Grade Limiters and Meters -All the Mod EQ Cons Main Features: Patent pending musical EQ with harmonic band types that boost in-key frequencies and cut out-of-key frequencies Familiar EQ controls translate to a regular workflow – but one that adds more colour Choice of band types for traditional boost/cut EQ or harmonic EQ Magic Shelf bands deliver punchier low end and smoother highs Simple key detection identifies the key and scale of your audio and sets the EQ’s target scale Scale Switching allows for scale and key changes in your track Dial in dynamics for any band (Threshold, Ratio, Attack, Release) Control any shape dynamically via sidechain input Add or remove scale notes for a specific colour (eg, four-note chords or just fifths) Input And Output Peak Limiters Adjustable input and output levels with peak and RMS metering Create unique EQ responses by combining magic shelves, harmonic filters and cuts Each band can be set to work on stereo, mid or side channels Enhance stereo width and collapse low frequencies to mono Minimum phase, zero latency EQ Standalone and compatible with AUv3 host apps such as Logic Pro, GarageBand, Auria, AUM, and Cubasis. Closable Panels and iOS zoom functions What can Scaler EQ be used for? Music Production: Ideal for musicians and producers looking to enhance the musicality of their tracks by ensuring all instruments are in harmony with the chosen scale. Audio Editing: Simplify EQ processes by targeting and cleaning up frequency bands to remove audio that doesn’t belong and enhance audio naturally present with the chosen scale. Audio Engineering: Dynamically soothe audio by suppressing in-harmonic frequencies or expanding harmonic frequencies using dynamic compression and expansion. Mastering: Place on your master channel to broaden your stereo width, focus your bass, increase loudness, and enhance your mix. Sound Designers: Easily create playable instruments from any recorded sound source using the Sound Design presets and musical resonator FX. DJing: DJs can use it to ensure that the tracks they mix are in harmony by detecting the key and scale whilst balancing the mix of each track. -"Scaler EQ is plugin that offers an innovative way to equalise with musicality and colour. It is a plugin that deserves to be tried by anyone." DJ Mag Italia -"Scaler EQ is a groundbreaking advancement in the world of audio engineering. The harmonic EQ technology is a game-changer." Song Mix Master -"Scaler EQ can make subtle harmonic changes or be a hugely creative plugin, but either way it makes your mixes sound better." Computer Music July 2024 -"Scaler EQ delivers harmonic processing we didn’t know we needed, but once heard, we might just apply it to everything." Music Radar -"Scaler EQ is a valuable tool for musicians, producers and audio professionals. It just might be the only EQ you need going forward’ 24bit Electronic Music Production
Screenshots
Verdict
The clearest difference is review sentiment: Tuniversal at 100% against Scaler EQ's 50%. Tuniversal also leads on price (Free vs $12.99) and update cadence (every 2 weeks vs every 2 months). Scaler EQ's advantage is rating (4.6 vs 4.3) and ratings volume (27 vs 4). On 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
Tuniversal is free to download; Scaler EQ costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Scaler EQ holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: Scaler EQ has 27 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 100% of Tuniversal's written reviews are positive against 50% of Scaler EQ's, so the app with the better star average is not the one people write more warmly about.
Tuniversal ships an update every 2 weeks, Scaler EQ every 2 months. The most recent releases landed on September 17, 2026 and October 2, 2026 respectively.
| Parameter | Tuniversal | Scaler EQ |
|---|---|---|
| Price | Free — better | $12.99 |
| Rating | 4.3 (4 ratings) | 4.6 (27 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 4 | 27 — better |
| Update frequency | Every 2 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 14 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Peter Hallett | Scaler Music |
Customer experience
Tuniversal
Scaler EQ
In-app purchases
Tuniversal
No in-app purchases
Scaler EQ
No in-app purchases









