# KeyStage vs TB Equalizer

The clearest difference is price: TB Equalizer at $9.99 against KeyStage's $29.99. TB Equalizer also leads on in-app purchases (none vs 7) and update cadence (monthly vs every 3 months). On rating, review sentiment, ratings volume and ads there is nothing between them.

KeyStage costs $29.99 and TB Equalizer $9.99 up front. KeyStage sells 7 one-off in-app purchases. TB Equalizer asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for KeyStage against 4.6 for TB Equalizer. Both are backed by a comparable volume of ratings — 37 and 66 respectively. Written reviews are what separate them: 91% of KeyStage's written reviews are positive against 85% of TB Equalizer's.

KeyStage ships an update every 3 months, TB Equalizer monthly. The most recent releases landed on September 18, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | KeyStage | TB Equalizer |
| --- | --- | --- |
| Price | $29.99 | **$9.99** |
| Rating | **[4.7 (37 ratings)](https://appshunter.io/ios/app/keystage/id1406132634/reviews)** | [4.6 (66 ratings)](https://appshunter.io/ios/app/tb-equalizer/id1473111210/reviews) |
| Number of ratings | 37 | **66** |
| Positive reviews | **91.0% of reviews** | 85.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 61 MB | 11 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ali Gokturk](https://appshunter.io/developer/1406132633) | [ToneBoosters](https://appshunter.io/developer/1472446500) |

## What reviewers say

### KeyStage

[App page](https://appshunter.io/ios/app/keystage/id1406132634)

This app acts as a master controller, AUv3 host, and audio mixer for keyboard players. It allows simultaneous control of multiple hardware and software instruments via MIDI, with advanced mapping, scripting, and audio mixing capabilities.

**Highlights:** Connect multiple MIDI controllers to instruments, Load AUv3 instruments, effects, and MIDI processors, Create complex keyboard splits and layers, Advanced MIDI mapping and scripting, Audio mixer with volume and pan control, Play and automate audio files, View PDF and JPG files

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Instrument Units | Free | one-time |
| Effect Units | Free | one-time |
| Player, Input, and Mixer Units | Free | one-time |
| MIDI Units | Free | one-time |
| Small Tip | $0.99 | one-time |
| Medium Tip | $3.99 | one-time |
| Large Tip | $9.99 | one-time |


### TB Equalizer

[App page](https://appshunter.io/ios/app/tb-equalizer/id1473111210)

This professional audio plug-in offers advanced equalization with a dynamic workflow and warm, non-linear filters. It processes microphone input in real-time and integrates with AUv3-compatible host apps for music production.

**Highlights:** Mastering grade equalizer, Integrated spectrum and dynamics analyzer, Up to 16 filter sections, Dynamic or static filter modes, AI-powered equalization suggestions, Oversampling and anti-aliasing, Mid/side/left/right processing

**In-app purchases:** none

**What reviewers like**

- 🎶 Professional sound quality
- 💡 Intuitive and easy to use
- 💰 Excellent value for money
- 🚀 Powerful features
- ✨ High-quality product

**What reviewers complain about**

- 📱 UI size is too small on iPhones
- 🤏 Microscopic menus and icons
- 🎛️ Popup window for node selections is redundant
- 🖥️ Takes away valuable screen space on smaller devices
- 🚫 Popup cannot be disabled

**Reported bugs**

- Popup window for node selections cannot be disabled
- Plug-in not being read correctly
- Destroys mixed tracks
- App crashes LumaFusion as a plug-in
- Makes audio sound flat

**Requested features**

- Disable popup window for node selections
- Larger UI for iPhones
- Fix plug-in reading issues
- Mouse compatibility
- Improve LFO maximum frequency


## Frequently asked questions

### Is KeyStage free?

KeyStage costs $29.99, and also offers in-app purchases.

### Is TB Equalizer free?

TB Equalizer costs $9.99, with no in-app purchases.

### Which has better reviews, KeyStage or TB Equalizer?

KeyStage is rated higher. KeyStage averages 4.7 out of 5 from 37 ratings, while TB Equalizer averages 4.6 from 66 ratings.

### Do KeyStage or TB Equalizer have ads?

Neither KeyStage nor TB Equalizer shows ads.

### Which is updated more often, KeyStage or TB Equalizer?

KeyStage ships an update every 3 months, and TB Equalizer monthly. Most recently, KeyStage was updated on September 18, 2026 and TB Equalizer on September 21, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*