# iStroboSoft vs Amazing Slow Downer

The clearest difference is in-app purchases: Amazing Slow Downer at none against iStroboSoft's 11. iStroboSoft's advantage is rating (4.3 vs 3.9) and price ($9.99 vs $14.99). On review sentiment, ratings volume, ads and chart position there is nothing between them.

iStroboSoft costs $9.99 and Amazing Slow Downer $14.99 up front. iStroboSoft sells 11 one-off in-app purchases. Amazing Slow Downer asks for nothing beyond the download.

iStroboSoft holds the better App Store score, 4.3 against 3.9. Both are backed by a comparable volume of ratings — 298 and 447 respectively. Written reviews point the same way: 76% of iStroboSoft's written reviews are positive against 69% of Amazing Slow Downer's.

iStroboSoft ships an update fortnightly, Amazing Slow Downer every 2 months. The most recent releases landed on September 25, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | iStroboSoft | Amazing Slow Downer |
| --- | --- | --- |
| Price | **$9.99** | $14.99 |
| Rating | **[4.3 (298 ratings)](https://appshunter.io/ios/app/istrobosoft/id308296029/reviews)** | [3.9 (447 ratings)](https://appshunter.io/ios/app/amazing-slow-downer/id308998718/reviews) |
| Number of ratings | 298 | **447** |
| Positive reviews | **76.0% of reviews** | 69.1% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | **#14** | #18 |
| Size | 5 MB | 6 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Peterson Tuners](https://appshunter.io/developer/308296032) | [Roni Music](https://appshunter.io/developer/308998721) |

## What reviewers say

### iStroboSoft

[App page](https://appshunter.io/ios/app/istrobosoft/id308296029)

**Currently charting:** #14 Top Paid · Music (US App Store)

This application provides highly accurate tuning for musical instruments, offering professional-grade precision with a real-time strobe display. It supports various tuning modes, temperaments, and input methods, making it suitable for both acoustic and electric instruments.

**Highlights:** 1/10th cent accuracy, Real-time strobe display, Guided Mode Tuning, 12 Temperaments with adjustable root, Assisted Low Note Detection, Drop/Capo mode, Adjustable Concert A

**Features:** Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extended Frequency Modes | $4.99 | one-time |
| Bluegrass Sweeteners | $5.99 | one-time |
| Buzz Feiten Pack | $5.99 | one-time |
| Guitar & Bass Sweeteners | $5.99 | one-time |
| Orchestral Sweeteners | $5.99 | one-time |
| World Sweetener Pack | $9.99 | one-time |
| Tuning Tools | $9.99 | one-time |
| Steel Guitar Sweeteners | $14.99 | one-time |
| Harmonic Tuning | $19.99 | one-time |
| Keyboard Sweeteners | $19.99 | one-time |
| Full Discounted Upgrade Pack | $59.99 | one-time |

**What reviewers like**

- 🚀 Extremely accurate
- 🔒 Reliable and stable
- 👍 Fantastic for instrument setup and intonation
- 👍 Portable and convenient
- 👍 Excellent value for the price

**What reviewers complain about**

- 🐛 Compatibility issues with iOS updates
- 💰 Expensive in-app purchases for additional features
- 🐛 Inconsistent performance, jumps between notes
- 🐛 Struggles with low and high notes
- 🐛 Microphone input not always reliable

**Reported bugs**

- App freezes or crashes on certain iOS versions
- Incorrect note detection on some instruments
- Display issues with newer iPhone/iPad models

**Requested features**

- Add support for more sweetened tunings and temperaments
- Improve display visibility and layout for newer devices
- Integrate with audio apps and allow routing through other apps
- Add Apple Watch app for quick tuning access
- Improve noise filtering and input sensitivity


### Amazing Slow Downer

[App page](https://appshunter.io/ios/app/amazing-slow-downer/id308998718)

**Currently charting:** #18 Top Paid · Music (US App Store)

This app allows musicians to adjust the playback speed of music without altering its pitch. It supports looping sections, changing tuning and key, and even speeding up audio. Ideal for learning songs, techniques, or improving transcription skills.

**Highlights:** Adjust playback speed (25%-200%), Maintain pitch while changing speed, Seamless looping, Change tuning and musical key, Supports Apple Music streaming

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Excellent for learning songs
- 👍 Great for transcribing and practicing
- 🎶 Allows slowing down and looping songs
- 💡 Useful for language learning
- 👍 Intuitive and easy to use

**What reviewers complain about**

- 🐛 Occasional bugs and crashes
- 🔌 Compatibility issues with Apple Music
- 💰 Considered expensive by some
- 🔍 Difficulty setting precise loop points
- 🔇 No volume control independent of device

**Reported bugs**

- Playback freezing or not working as expected
- Inability to access purchased songs from iTunes library
- Connectivity issues when trying to use with Spotify

**Requested features**

- Add ability to record and import voice memos
- Improve library management and organization
- Implement Audiobus support for looping in other apps
- Add more precise speed and pitch adjustment controls
- Provide option to display waveform for better visualization


## Frequently asked questions

### Is iStroboSoft free?

iStroboSoft costs $9.99, and also offers in-app purchases.

### Is Amazing Slow Downer free?

Amazing Slow Downer costs $14.99, with no in-app purchases.

### Which has better reviews, iStroboSoft or Amazing Slow Downer?

iStroboSoft is rated higher. iStroboSoft averages 4.3 out of 5 from 298 ratings, while Amazing Slow Downer averages 3.9 from 447 ratings.

### Do iStroboSoft or Amazing Slow Downer have ads?

Neither iStroboSoft nor Amazing Slow Downer shows ads.

### Which is updated more often, iStroboSoft or Amazing Slow Downer?

iStroboSoft ships an update fortnightly, and Amazing Slow Downer every 2 months. Most recently, iStroboSoft was updated on September 25, 2026 and Amazing Slow Downer on September 24, 2026.

### Which is more popular, iStroboSoft or Amazing Slow Downer?

iStroboSoft currently peaks at #14 in the App Store charts, and Amazing Slow Downer at #18. Chart position reflects recent download velocity rather than total install base.

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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.*