Harmonizer audio effect vs Wah Pedal
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Harmonizer audio effect
This real-time audio effect app shifts pitch and adds harmonies to your original sound. It functions as an Audio Unit plugin or a standalone effect using your device's microphone or external audio interfaces. The pitch shifting preserves the original timing and tempo.
- Real-time pitch shifting
- Two harmony voices
- Smooth pitch shift controls
- Adjustable voice volumes
- Master reverb effect
- Standalone mode via microphone
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Harmonizer is real time audio pitch shifter effect that can mix harmonies into the original signal or run as realtime pitch shifter. The app works as an Audio Unit plugin and can also be used as stand alone real time effect via the device microphone or using iRig or similar device. The pitch shifting does NOT affect timing so the tempo stays the same. Features: - 2 harmony voices - smooth pitch shift controls - half tones and cents - dry volume (original voice) - efx 1 volume (pitch shifted voice 1 volume) - efx 2 volume (pitch shifted voice 2 volume) - reverb (master reverb) - EFX on/off button (in stand alone mode) If you play acoustic instrument you can use headphones without a mic and put the phone close to your instrument so the app will work as realtime effect. Now you can play and sing with harmonies.
Wah Pedal
This app emulates a classic Italian-made wah pedal, famous for its use in iconic rock songs. It can be used as a standalone application, an AudioUnit v3 effect, or an Inter-App Audio effect.
- Classic wah pedal emulation
- Standalone app functionality
- AudioUnit v3 effect
- Inter-App Audio effect
- Iconic rock tone reproduction
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Nembrini Audio Wah is modeled on the Wah pedal created by Thomas Organ* Company and manufactured by JEN in Italy. This is the unmistakable wah tone heard on Hendrix classics like "Up From the Sky," "Voodoo Child (Slight Return)," "Little Miss Lover" and "Still Raining, Still Dreaming." The Nembrini Audio Wah reproduces these timbres. Works as a standalone app, AudioUnit v3 effect, or Inter-App Audio effect
Screenshots
Verdict
The clearest difference is price: Wah Pedal at Free against Harmonizer audio effect's $1.99. Wah Pedal also leads on review sentiment (67% vs 23%) and rating (4.2 vs 3.0). Harmonizer audio effect's advantage is update cadence (every 8 months vs every 47 months) and iOS requirement (10.0 vs 15). On ratings volume, 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
Wah Pedal is free to download; Harmonizer audio effect costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Wah Pedal holds the better App Store score, 4.2 against 3.0. Both are backed by a comparable volume of ratings — 9 and 11 respectively. Written reviews point the same way: 23% of Harmonizer audio effect's written reviews are positive against 67% of Wah Pedal's.
Harmonizer audio effect ships an update every 8 months, Wah Pedal every 47 months. The most recent releases landed on November 2, 2026 and November 11, 2026 respectively.
| Parameter | Harmonizer audio effect | Wah Pedal |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 3.0 (9 ratings) | 4.2 (11 ratings) — better |
| Positive reviews | 23.1% of reviews | 66.7% of reviews — better |
| Number of ratings | 9 | 11 — better |
| Update frequency | Every 8 months — better | Every 47 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 15 |
| Further details — not scored | ||
| Size | 14 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Aleksandar Mlazev | Nembrini Audio |
Customer experience
Harmonizer audio effect
Wah Pedal
In-app purchases
Harmonizer audio effect
No in-app purchases
Wah Pedal
No in-app purchases
Questions
Is Harmonizer audio effect free?
Is Wah Pedal free?
Which has better reviews, Harmonizer audio effect or Wah Pedal?
Do Harmonizer audio effect or Wah Pedal have ads?
Which is updated more often, Harmonizer audio effect or Wah Pedal?
Other comparisons
