Modsync vs Anacru
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Modsync
Instantly calculate LFO frequencies in Hz that sync with your music's tempo. Achieve tighter, more musical modulations that enhance rhythm. Perfect for producers and sound designers.
- Tempo-synced LFO calculations
- 6 rhythmic divisions
- Straight, dotted, and triplet variations
- One-tap copy to clipboard
- Minimalist interface
- Offline functionality
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Make your modulations groove with your music. When your LFO rate matches your track's tempo, modulations rise and fall naturally with the beat. This creates tighter, more musical movement where the modulation enhances the rhythm instead of fighting it. Modsync calculates LFO frequencies in Hz instantly based on your BPM and note division. Just copy the values into your synth or plugin. FEATURES - Instant tempo-synced LFO calculations - 6 rhythmic divisions from whole notes to 1/32 - Straight, dotted, and triplet variations - One-tap copy to clipboard - Beautiful, minimalist interface - Haptic feedback - Works completely offline PRO TIP With iCloud Universal Clipboard enabled, tap any value on your iPhone and paste it directly into your synth or DAW on Mac. No typing required. Perfect for music producers, sound designers, and synth enthusiasts who want their modulations to feel musical, not random. Made with love by AKER.
Anacru
Build complex rhythms with interlocking meters, tempo changes, and nested tuplets. Visualize and hear intricate polyrhythms and metric modulations. Export your creations as MIDI files for use in digital audio workstations.
- Construct advanced rhythms
- Interlocking meters and phase shifts
- Metric modulation with tempo changes
- Nested tuplets
- Interactive visual wheel
- Export MIDI files to DAWs
- Private by design, no account needed
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Anacru is a scratchpad for constructing advanced rhythm. Most rhythm apps measure time — Anacru builds it. Instead of tapping along to a click, you assemble the rhythm you're hearing in your head from its parts: interlocking meters, tempo modulations, phase shifts, and tuplets nested inside tuplets. Then you play it back, watch it move, and export it to your DAW. Built for composers, drummers, producers, and teachers who work past 4/4 — and for students trying to finally *feel* how these ideas fit together. WHAT YOU CAN BUILD • Polymeter — stack independent layers, each with its own meter, subdivision, accent pattern, and phase offset. Watch 5/4 drift against 4/4 and snap back into alignment, locked to one shared pulse. • Metric modulation — pick the note value before and after a tempo change and get the exact new BPM instantly, with the direction never ambiguous. Chain modulations into a timeline the playback steps through as it loops. • Nested tuplets — put a quintuplet inside a triplet inside a bar. The engine handles the math; you just stack them. • Phase & accents — tap a pulse to accent it, or drag a layer's ring to rotate its phase. The wheel is the instrument. THE INTERACTIVE WHEEL Every layer is a ring of pulses on a single wheel, color-coded and voiced so you can follow each stream by eye and by ear. A playhead sweeps the cycle so you can see the relationships, not just hear them. HEAR IT PROPERLY Each layer gets its own pitch, stereo position, and selectable voice — woodblock, marimba, pluck, sine, or a kick/hi-hat drum kit — so interlocking parts read as separate instruments instead of one wash. SEE IT NOTATED Each layer is rendered on its own staff with correct meter, beaming, accents, and tuplet brackets. TAKE IT WITH YOU • Save and recall your patterns on-device. • Export a MIDI file — a clean tempo map carrying your modulation timeline, plus one track per layer — and drop it straight into any DAW. PRIVATE BY DESIGN No account. No sign-up. No tracking. No internet required. Everything lives on your device. One purchase, yours to keep.
Screenshots
Verdict
The clearest difference is price: Modsync at Free against Anacru's $4.99. On rating, ratings volume, ads and in-app purchases 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
Modsync is free to download; Anacru costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Modsync against 5.0 for Anacru. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
| Parameter | Modsync | Anacru |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Number of ratings | 1 | 2 — better |
| Update frequency | — | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 14.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 6 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | AKER SARL | EVAN TRACEN POWERS |
In-app purchases
Modsync
No in-app purchases
Anacru
No in-app purchases









