Accelerando vs Just A 2nd
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Accelerando
This music player dynamically adjusts song tempo to match your physical activity. It integrates with popular music services and local files, offering a personalized listening experience for workouts and commutes.
- Real-time music speed adjustment
- GPS-based tempo control
- SoundCloud integration
- iTunes library access
- Local audio file support
- Background playback
- Customizable presets
Read full descriptionHide full description
Accelerando is a revolutionary music player that automatically adjusts playback speed based on your movement. Perfect for running and other activities. Features: • Real-time music speed adjustment based on GPS • Access to millions of tracks from SoundCloud • Access to your iTunes music library • Supported local audio files: .m4a, .mp3, .flac, .wav, .aiff, .aif, .aifc, .caf, .aac, .mp4, .m4p, .m4b, .3gp, .3g2, .amr, .ac3, .eac3, .mp1, .mp2, .au, .snd • Background playback with lock screen controls • Simple playlist organization • 3 customizable presets (music tempo & movement speed) • Speed unit and language selection The run, bicycle, and car presets work exactly the same - you can use them for any type of activity. Whether you're warming up or sprinting, Accelerando keeps your music in sync with your pace! Do not use this app while driving a vehicle. This application is designed to be used only as a passenger. Safety is important.
Just A 2nd
Improve your music theory and ear training skills with quick daily exercises. This app helps you understand music better, whether you're learning an instrument or appreciating songs.
- Daily ear training exercises
- Music theory drills
- Instrument learning support
- Music appreciation enhancement
- Pocket-sized trainer
Read full descriptionHide full description
Say goodbye to boring music theory drills! Whether you are learning a new instrument or want to understand the music you love, Just A 2nd is your new pocket-sized trainer. Spend a few seconds a day and improve your hearing skills!
Screenshots
Verdict
The clearest difference is rating: Just A 2nd at 5.0 against Accelerando's 4.0. Accelerando's advantage is update cadence (every 3 days vs monthly) and monetization model (free vs free with in-app purchases). On price, ads, in-app purchases and device support 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
Both are free to download. Accelerando sells 1 one-off in-app purchase and Just A 2nd sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Just A 2nd holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
Accelerando ships an update every 3 days, Just A 2nd monthly. The most recent releases landed on October 28, 2026 and October 22, 2026 respectively.
| Parameter | Accelerando | Just A 2nd |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (3 ratings) | 5.0 (1 ratings) — better |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 3 days — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 2 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | ALBEDO JACEK FRANKOWSKI | 俊荣 陆 |
Customer experience
Accelerando
Just A 2nd
In-app purchases
Accelerando
- Full version$6.99
Just A 2nd
- Just A 2nd Pro$0.99
