Capo Helper vs Modsync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Capo Helper
Instantly translate chords for any capo position, helping musicians play along with guitarists using capos. It can also suggest capo placements and chord shapes based on a song's key.
- Instant chord translation for any capo position
- Translates in both directions (capo to sounding, key to capo)
- Handles complex and real chords
- Suggests optimal capo positions for song keys
- Displays chord fingerings with capo
- Stage mode with high contrast and screen lock
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Put a capo on the third fret, play a G shape, and what everyone hears is a Bb. If the bass player or the keyboard player wants to play along, someone has to work that out. Capo Helper does it for you. Set the fret the capo is on and every chord is translated instantly, so the rest of the band knows what's actually sounding and the guitar player can use their capo as much as they want. It works the other way round too. Tell it what key the song is in and it will show you where to put the capo and which shapes to play. WHAT IT DOES • Translates every chord for any capo position, in both directions • Handles real chords — Am7, Csus4, F#m7b5, D/F# — not just root notes • Spells them correctly for the key: Bb in flat keys, A# in sharp keys • Finds the best capo position for a song's key, ranked by which frets give you open chords • Shows you how to actually play each chord with the capo where it is • Stage mode: oversized, high contrast, and the screen stays awake on a music stand CAPO HELPER PRO One purchase. No subscription. • Every alternate fingering for a chord, up and down the neck • Alternate tunings — Eb standard, Drop D, DADGAD, Open G and Open D • Partial capos, where each string can sit at its own fret • Bb, Eb and F transpositions for horns, plus a harmonica position finder • Nashville numbers No ads. No tracking. No account. No internet connection needed — all of it works offline. Bought Capo Helper years ago, when it cost a dollar? Tap Restore and Pro is yours. You already paid for it.
Modsync
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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.
Screenshots
Verdict
The clearest difference is in-app purchases: Modsync at none against Capo Helper's 1. On price, ads, 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
Both are free to download. Capo Helper sells 1 one-off in-app purchase. Modsync asks for nothing beyond the download.
| Parameter | Capo Helper | Modsync |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) — better | — |
| Positive reviews | 37.5% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 12 months | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 19 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | YsApps | AKER SARL |
In-app purchases
Capo Helper
- Capo Helper Pro$5.99
Modsync
No in-app purchases









