Comparison

Scale Study vs Dodast

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Scale Study

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
Read full description

Piano scale practice is a core part of building technique, but improving means more than playing the right notes. You need to increase tempo while staying accurate and in control. Scale Study helps you practice scales and improve your tempo in a clear and measurable way. Connect a MIDI keyboard or digital piano and play your scales as usual. The app listens to your playing, confirms when a scale is correct, and records the fastest tempo you can play it cleanly. This helps you see which scales are improving and which need more work. You can start slowly to build accuracy, then increase the tempo over time. Scale Study keeps a record of your progress so you can see your speed improve through regular practice. Practice Anywhere mode is also included for when you do not have a keyboard. This is a simple tapping mode that helps you practice rhythm and timing, but the full scale detection and tempo tracking requires a MIDI keyboard. Features • Practice major and minor scales using a MIDI keyboard • See the fastest tempo you can play each scale accurately • Track your progress over time • Focus on both speed and accuracy • Practice Anywhere tapping mode for rhythm and timing This is useful for piano students preparing for exams such as ABRSM, and for anyone who wants to improve their scale tempo and overall technique. Scale Study is a small, focused app made by an independent developer. I am Shane, and I read every review and message. The goal is simple. Help you improve your scales and increase your tempo through regular, focused practice. Try it free, then upgrade with a yearly or lifetime purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Dodast

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
Read full description

Turn every phone in the room into one speaker. Dodast is an offline music player and video player for the files already on your device, and it syncs playback across phones so everyone hears the same song at the same instant. SYNC MUSIC ACROSS PHONES One phone hosts. Everyone else joins over the same Wi-Fi, or over the host's hotspot when there is no network around. From that moment every device plays as one: no echo, no drift, no lag you can hear. Stack phones into a fuller, louder speaker setup in seconds and fill a kitchen, a backyard, a tent or a car. No Bluetooth speaker needed. A REAL OFFLINE MUSIC PLAYER Dodast is a local music player you would use every day, sync or not. It scans the MP3, FLAC, WAV, M4A and other audio and video files already on your phone, reads tags and album art, then stays out of your way. • Browse by songs, albums, artists and folders • Build playlists and reorder them freely • Fast search across your whole library • Equalizer to shape the sound the way you like • Sleep timer for the end of the night • Background playback and lock screen controls • Works with no internet connection at all THE MUSIC ALREADY ON YOUR IPHONE Dodast plays the music library already on your iPhone: the songs you bought and downloaded, tracks you imported from your Mac or PC, files saved in the Files app, and anything shared to Dodast from another app. Years of collecting, finally playing on every phone in the room at once. No more passing one earbud back and forth. Everyone listens on their own headphones, at the same instant. Music from a streaming subscription stays protected by its provider and cannot be played by any third-party app. WATCH TOGETHER, HEAR IT ON EVERY PHONE Put a video on one screen and let the whole room hear it in sync on their own headphones. One device carries the picture, every other phone carries the sound. Made for the moments a speaker would ruin: a show after the house is asleep, a film on a long flight, a room where everyone wants their own volume. EVERYONE KEEPS CONTROL Each guest sets their own volume from their own phone. If one device runs a hair ahead or behind, a simple slider brings it back in line. Nobody has to shout across the room. SHARE THE MUSIC, NOT YOUR FILES Nothing is uploaded and nothing is copied. Your library stays on your phone and the devices talk straight to each other on the local network. No account, no sign-up, no cloud. WHAT YOU NEED • Dodast installed on each iPhone or iPad • A shared Wi-Fi network, or one device acting as a hotspot • Your own music and video files Great for road trips, house parties, picnics, dorm rooms, hotel rooms, camping, study sessions and late night movie nights. Any moment worth hearing together. Line up the phones. Press play together. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Scale Study3 screens
Dodast4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard1 real difference · 8 level
Scale Study versus Dodast: the parameters behind the verdict, then further details
ParameterScale StudyDodast
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 2 weeks — betterFortnightly
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.615.0 — better
Further details — not scored
Size20 MB74 MB
Age rating4+12+
DeveloperDiem LimitedMohammad Khakpaki

Customer experience

Scale Study

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Dodast

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Scale Study

Subscriptions1
  • Scale Study Annual Subscription$0.991 Year
One-time1
  • Scale Study Lifetime Purchase$2.99
2 purchases

Dodast

Subscriptions2
  • premium$0.997 Days
  • premium$9.991 Year

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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