Comparison

TriKey vs 4 bars Metronome

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

Head to head

TriKey

Composer's MIDI Keyboard

Pitched 4-bar Metronome

Free

🎵 Music

No ratingsView app →

About

TriKey

Read full description

TriKey is a composer's keyboard Control other iPad synths or external MIDI hardware! Features: - 3 configurable Keyboards with the ability to control CC Messages by moving your fingers up / down - Global Key and Scales prevent you from ever playing a wrong note - Save and toggle Chords - Advanced CC Options for each keyboard - Save / Load your own presets - Individual MIDI Ports & Channels for each Keyboard

About

4 bars Metronome

Features

Read full description

"4 bars Metronome" is a metronome that plays 4 bars bass notes. You can start jam session immediately with very simple operation. Features - Metronome that plays bass sound - Switchable number of measures (4 bars / 8 bars) - Switchable BPM (min. 40, max. 250) - Switchable reference frequency (440hz, 442hz) - Changeable bass tones - Switchable sequencer settings

Screenshots

4 bars Metronome3 screens

Verdict

The call

The clearest difference is price: 4 bars Metronome at Free against TriKey's $9.99. 4 bars Metronome also leads on update cadence (every 5 days vs every 2 months). TriKey's advantage is iOS requirement (12.0 vs 16.4). On 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

CostPrice · In-app purchases · Ads · Monetization

4 bars Metronome is free to download; TriKey costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

TriKey ships an update every 2 months, 4 bars Metronome every 5 days. The most recent releases landed on October 3, 2026 and September 24, 2026 respectively.

Scorecard3 real differences · 3 level

TriKey versus 4 bars Metronome: the parameters behind the verdict, then further details
Parameter	TriKey	4 bars Metronome
Price	$9.99	Free — better
Update frequency	Every 2 months	Every 5 days — better
Ads	No	No
In-app purchases	No	No
Devices	iPad	iPhone, iPad — better
Requires iOS	12.0 — better	16.4
Further details — not scored
Size	5 MB	26 MB
Age rating	4+	4+
Developer	Marcos Kohler	Hitoshi Yamaguchi

In-app purchases

None

TriKey

No in-app purchases

None

4 bars Metronome

No in-app purchases

Questions

Is TriKey free?

TriKey costs $9.99, with no in-app purchases.

Is 4 bars Metronome free?

4 bars Metronome is free to download, with no in-app purchases.

Do TriKey or 4 bars Metronome have ads?

Neither TriKey nor 4 bars Metronome shows ads.

Which is updated more often, TriKey or 4 bars Metronome?

TriKey ships an update every 2 months, and 4 bars Metronome every 5 days. Most recently, TriKey was updated on October 3, 2026 and 4 bars Metronome on September 24, 2026.