VELO Player vs OpenString
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VELO Player
This music app allows dance teachers to adjust song tempo in real-time without altering pitch. It helps organize music by dance style and offers studio connectivity for seamless practice sessions.
- Real-time tempo adjustment
- Pitch-preserving audio
- Playlist organization by dance style
- Studio Link device connectivity
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VELO Player - Dance Tempo Player for dance teachers. Adjust music tempo in real-time without changing pitch. Organize playlists by dance styles. Connect devices via Studio Link.
OpenString
This app provides essential tools for guitarists, including a tuner, metronome, chord handbook, and a personal songbook. It offers all features upfront with no subscriptions or in-app purchases, allowing users to manage their own song charts and practice effectively offline.
- Guitar tuner
- Metronome with tempo and meter settings
- Chord handbook with fingerings and voicings
- Personal songbook for lyrics and chords
- Key transposition and capo preference
- Scale and shape finder
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Every guitar practice tool is included: tuner, metronome, chord handbook, and a personal songbook. No subscription, no account, and no catalog paywall. OpenString is built for guitarists who want the tools on their phone, not a rented song library. Install it from the App Store. You get the tuner, metronome, chords, and songbook. There is nothing left to unlock later. WHAT YOU GET Guitar tuner Tune a standard six-string guitar with the microphone. Choose a preset, let the app pick the string or choose it yourself, and play a reference note when you want a target pitch. Audio is processed on your iPhone. It is never recorded or uploaded. Metronome Keep time from 40 to 240 BPM. Tap a tempo, set the meter, choose subdivisions and accents, run a practice timer, or mute the click and follow the beat visually. Chord handbook Look up common major, minor, and seventh fingerings in standard guitar tuning. Search the handbook, save favorites, hear a reference voicing, and jump to alternate positions on the neck. Personal songbook Keep your own lyrics and chords. Transpose the displayed key and save a capo preference without rewriting the source chart. Add song metadata, build named setlists, practice with autoscroll, jump to chords used in a song, and import ChordPro. Create and edit on your phone, then export a backup to a destination you choose and restore it later. Song to chords Pick a song and get its chords and words together in one tap, ready to play and sing. Scale and shape finder Type a scale like A minor pentatonic and see its box shapes on the neck, with the fret positions you actually play them in. HOW THIS IS DIFFERENT There are no in-app purchases and no subscription. Every current tool is included with the app. The tuner, metronome, chord handbook, and songbook are not split across plans. No commercial song catalog is included. Your songbook is filled by you, whether you type it or import ChordPro. That is the point: your charts, your lyrics, your practice. The app works offline and needs no account. No feed. No ads in the app. WHO IT IS FOR Players who want a tuner, metronome, chord diagrams, and their own charts in one place. People who write songs, type lyrics and chords they already play, or import ChordPro. WHO IT IS NOT FOR OpenString does not rent you a library of popular songs or official tabs. If you want a commercial catalog behind a monthly plan, this is not that app. OpenString is built for guitar practice on iPhone.
Screenshots
Verdict
The clearest difference is update cadence: OpenString at daily against VELO Player's every 6 weeks. OpenString also leads on monetization model (free vs free with in-app purchases). On price, rating, review sentiment and ratings volume 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. VELO Player sells 2 in-app purchases, starting at $3.99 per month and OpenString sells 1 one-off in-app purchase. 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 VELO Player against 5.0 for OpenString. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
VELO Player ships an update every 6 weeks, OpenString daily. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.
| Parameter | VELO Player | OpenString |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 6 weeks | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 4 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Markus Homm | Techguyver Labs, LLC |
Customer experience
VELO Player
OpenString
In-app purchases
VELO Player
- VELO Pro (Monthly)7 Days trial$3.991 Month
- VELO Pro (Yearly)7 Days trial$34.991 Year
OpenString
- OpenString Pro$9.99









