# BIAS AMP 2 vs AmpStamp

The clearest difference is ratings volume: BIAS AMP 2 at 651 against AmpStamp's 32. BIAS AMP 2 also leads on iOS requirement (11.0 vs 15.0). AmpStamp's advantage is device support (4 vs 2). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. BIAS AMP 2 sells 9 one-off in-app purchases and AmpStamp sells 10 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.4 for BIAS AMP 2 against 4.4 for AmpStamp. That said, the two scores are not equally well evidenced: BIAS AMP 2 has 651 ratings behind it against 32, so its average is the more settled of the two. Written reviews are what separate them: 50% of BIAS AMP 2's written reviews are positive against 55% of AmpStamp's.

BIAS AMP 2 ships an update monthly, AmpStamp every 5 weeks. The most recent releases landed on November 1, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | BIAS AMP 2 | AmpStamp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (651 ratings)](https://appshunter.io/ios/app/bias-amp-2-for-iphone/id807996795/reviews)** | [4.4 (32 ratings)](https://appshunter.io/ios/app/ampstamp/id1065273964/reviews) |
| Number of ratings | **651** | 32 |
| Positive reviews | 49.6% of reviews | **54.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 633 MB | 289 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Positive Grid Inc](https://appshunter.io/developer/751979910) | [The Musicology Group, Inc.](https://appshunter.io/developer/1061725506) |

## What reviewers say

### BIAS AMP 2

[App page](https://appshunter.io/ios/app/bias-amp-2-for-iphone/id807996795)

Design your dream amplifier with this virtual amp designer. Replicate classic and modern amps, or build new sounds by swapping components like tubes and cabinets. Access a vast community of shared tones for endless sonic inspiration.

**Highlights:** Component-level amp modeling, Design custom amplifiers, Swap tubes, preamps, and cabinets, Access ToneCloud community, Multi-mic speaker cabinet emulation, Integrated reverb effects

**Features:** Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GlassyPack | $3.99 | one-time |
| CrunchPack | $3.99 | one-time |
| MetalPack | $3.99 | one-time |
| Bass Pack | $3.99 | one-time |
| Blues Pack | $3.99 | one-time |
| BIAS Amp 2.0 Features Pack | $6.99 | one-time |
| Celestion Modern Vintage Pack | $7.99 | one-time |
| Celestion Classic Pack | $7.99 | one-time |
| BIAS Amp 2.0 Features Pack | $7.99 | one-time |

**What reviewers like**

- 🚀 Awesome sounds
- 🚀 Highly customizable
- 🚀 Great for live use
- 👍 Realistic amp modeling
- 👍 Excellent support

**What reviewers complain about**

- 🐛 Crashes and stability issues
- 🐛 Compatibility problems with iOS updates
- 💰 Have to pay twice for iPhone and iPad versions
- 💰 Expensive in-app purchases

**Reported bugs**

- Annoying static/feedback noises
- Amp match feature not working
- Unable to turn off cab simulation
- Wireless headphone connectivity issues

**Requested features**

- Add metronome
- Improve inter-app audio support
- Implement AUv3 support
- Allow restoring purchases across devices
- Increase interface size for iPhone


### AmpStamp

[App page](https://appshunter.io/ios/app/ampstamp/id1065273964)

This app recreates vintage guitar tones with models of classic amps, effects, and cabinets. Customize your sound, save presets, and use MIDI controllers for hands-free operation. Expand your sonic palette with individual purchases or an all-access subscription.

**Highlights:** Vintage amplifier modeling, Classic effects and cabinet simulations, Customizable sound presets, MIDI controller support, In-app Gear Shop, All-access subscription option

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AmpStamp | $4.99 | per month |
| AmpStamp | $49.99 | per year |
| WH100 Wah | Free | one-time |
| VG402C Amplifier | $3.99 | one-time |
| VG205E Amplifier | $3.99 | one-time |
| VG402B Amplifier | $3.99 | one-time |
| EC101C Echo | $3.99 | one-time |
| VG302E Amplifier | $3.99 | one-time |
| VG207A Amplifier | $3.99 | one-time |
| VG 2X12C 100W '68 Cabinet | $4.99 | one-time |


## Frequently asked questions

### Is BIAS AMP 2 free?

BIAS AMP 2 is free to download, with in-app purchases available.

### Is AmpStamp free?

AmpStamp is free to download, with in-app purchases available.

### Which has better reviews, BIAS AMP 2 or AmpStamp?

BIAS AMP 2 is rated higher. BIAS AMP 2 averages 4.4 out of 5 from 651 ratings, while AmpStamp averages 4.4 from 32 ratings.

### Do BIAS AMP 2 or AmpStamp have ads?

Neither BIAS AMP 2 nor AmpStamp shows ads.

### Which is updated more often, BIAS AMP 2 or AmpStamp?

BIAS AMP 2 ships an update monthly, and AmpStamp every 5 weeks. Most recently, BIAS AMP 2 was updated on November 1, 2026 and AmpStamp on November 11, 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.*