ChordUp vs Telemann 6 Duets
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ChordUp
This app is a musical instrument and MIDI controller that lets you play common chords instantly with a single touch. It offers multiple playing surfaces for chords, single notes, or strumming, and can control other music apps on the same or different devices.
- Instant chord selection with single touch
- Play full chords, single notes, or strum
- Control other music apps via MIDI
- 108 available chords
- 10 embedded instruments
- Smart sustain and chord locking
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ChordUp is a musical instrument and MIDI controller that allows you to play almost any common chord instantly. No need to configure presets for each song. Just grab ChordUp and start playing. SELECT CHORDS WITH A SINGLE TOUCH Unique chord selector allows you to play any available chord instantly. You don't need to make any pre-configurations or presets. Just tap on the key button and slide your finger to the required chord type. With a little practice you will be able to select any chord in a fraction of a second. PLAY FULL CHORDS, SINGLE NOTES OR STRUM Three playing surfaces allows you to easily play any rhythm pattern: full chords, bass and chord, strumming or arpeggios. CONTROL OTHER APPS ON THE SAME DEVICE You can use ChordUp to control your favourite soft or hard synthesizer through Core MIDI connection or though Audiobus 3 MIDI ports. CONTROL APPS ON ANOTHER IOS DEVICE OR YOUR MAC ChordUp can send MIDI notes to another iOS device through a Bluetooth MIDI connection. If you want to control an App running on your Mac you can connect through Bluetooth, Wi-Fi or USB. FEATURES • 108 available chords (9 chord types for each of the 12 notes). • 10 embedded instruments: Acoustic Piano, Electric Piano, Guitar, Organ, Accordion, Vibraphone, Strings, 3 synth sounds. • 12 pads surface (for piano like parts) • 6 strings surface (for guitar strumming, power chords and arpeggios) • Expression pad surface (allows to play full chords and control an expression parameter at the same time) • Smart sustain. With the sustain enabled, when you switch chords, only the notes of the current chord that don't belong to the next chord are muted. • Octave transposition. • Chord locking. You can lock one chord type for a chord button. • Buttons size adjustment on iPad. • CoreMIDI support. • Audiobus support (Audio sender port, MIDI sender port)
Telemann 6 Duets
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This App contain the Telemann 6 Duets for 2 Treble Recorders .Since it is independent of each part, by playing the other part, you can practice together. This app, do not go out together for a marker to play. This app will be replaced by the score in accordance with the progress of the song. It is A = 440Hz (modern pitch)and A= 415(baroque pitch).It is to be able to play at a speed of 6 stages. Along with how to practice to play for each movement, it is also possible to practice by playing through one song sonata.
Screenshots
Verdict
The clearest difference is update cadence: ChordUp at every 3 weeks against Telemann 6 Duets's every 15 months. Telemann 6 Duets's advantage is price ($0.99 vs $5.99). On ads, in-app purchases, device support and iOS requirement 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
ChordUp costs $5.99 and Telemann 6 Duets $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ChordUp ships an update every 3 weeks, Telemann 6 Duets every 15 months. The most recent releases landed on November 2, 2026 and October 12, 2026 respectively.
| Parameter | ChordUp | Telemann 6 Duets |
|---|---|---|
| Price | $5.99 | $0.99 — better |
| Rating | 4.4 (41 ratings) — better | — |
| Positive reviews | 94.3% of reviews | — |
| Number of ratings | 41 — better | — |
| Update frequency | Every 3 weeks — better | Every 15 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 30 MB | 311 MB |
| Age rating | 4+ | 4+ |
| Developer | Dmitrii Klochkov | masafumi sasaki |
In-app purchases
ChordUp
No in-app purchases
Telemann 6 Duets
No in-app purchases









