# Scale Study vs Dodast

The clearest difference is ads: Scale Study at none against Dodast's shown. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Scale Study sells 2 in-app purchases, starting at $0.99 per year and Dodast sells 2 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Scale Study against 5.0 for Dodast. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Scale Study ships an update every 2 weeks, Dodast fortnightly. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Scale Study | Dodast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/scale-study-tempo-practice/id6758663846/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/dodast-sync-music-player/id6790904205/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 20 MB | 74 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Diem Limited](https://appshunter.io/developer/1439019995) | [Mohammad Khakpaki](https://appshunter.io/developer/1273566481) |

## What reviewers say

### Scale Study

[App page](https://appshunter.io/ios/app/scale-study-tempo-practice/id6758663846)

Improve your piano scale technique by practicing tempo and accuracy. Connect a MIDI keyboard to log your fastest clean tempos and track progress over time. A tapping mode is available for rhythm practice without a keyboard.

**Highlights:** Practice scales with MIDI keyboard, Log fastest accurate tempos, Track progress over time, Focus on speed and accuracy, Rhythm and timing tapping mode

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scale Study Annual Subscription | $0.99 | per year |
| Scale Study Lifetime Purchase | $2.99 | one-time |


### Dodast

[App page](https://appshunter.io/ios/app/dodast-sync-music-player/id6790904205)

This app transforms multiple phones into a synchronized speaker system for offline music and video playback. It allows users to share audio and video experiences simultaneously across devices without needing a network connection, offering individual volume control for each participant.

**Highlights:** Synchronized playback across multiple phones, Offline music and video player, Wi-Fi or hotspot connectivity, Individual volume control, Playlist creation and management, Equalizer and sleep timer, Background playback and lock screen controls

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| premium | $0.99 | per 7 days |
| premium | $9.99 | per year |


## Frequently asked questions

### Is Scale Study free?

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

### Is Dodast free?

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

### Which has better reviews, Scale Study or Dodast?

Scale Study and Dodast are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Scale Study or Dodast have ads?

Dodast shows ads; Scale Study does not.

### Which is updated more often, Scale Study or Dodast?

Scale Study ships an update every 2 weeks, and Dodast fortnightly. Most recently, Scale Study was updated on October 10, 2026 and Dodast on September 30, 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.*