Comparison

FOLD Stereo to Mono vs Capoflip

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

Head to head
About

FOLD Stereo to Mono

This audio utility app allows musicians to adjust stereo width and fold down stereo signals to mono. It functions as an AUv3 plugin for compatible hosts, offering real-time phase correlation metering and output gain control. It's designed for seamless integration into music production workflows.

Highlights
  • Variable stereo width control
  • Click-free mono fold-down
  • Output trim gain stage
  • Real-time phase correlation meter
  • AUv3 plugin support
  • Host automation compatibility
Read full description

FOLD is a stereo width and mono fold-down utility for iOS. Use it as an AUv3 plugin in any compatible host. FEATURES Width — Continuously variable stereo width from mono to full stereo. Drag the knob or tap to enter an exact value. Width changes are smoothed to avoid clicks. Mono — One tap collapses your stereo signal to mono with a click-free ramp. Instantly check how your mix translates to a single speaker, earbuds, or phone. Output Trim — ±12 dB gain stage after the width processing. Compensate for any perceived loudness shift when narrowing a wide mix. Phase Correlation Meter — Real-time bar display with a numeric readout. Green means your signal is mono-compatible and safe. Amber indicates partial cancellation. Red flags phase cancellation issues that will cause problems on mono playback devices. WORKS AS AN AUv3 PLUGIN Load FOLD in Loopy Pro, GarageBand, AUM, Audiobus, Cubasis, n-Track, or any AU-compatible host on iPhone or iPad. The AUv3 extension exposes all parameters for host automation. Free. No in-app purchases. No ads. No account required.

About

Capoflip

Features
Read full description

Freeze a performance edition of your setlist with each song’s concert key, capo position and matching written chord shapes, then export the complete PDF book. HOW IT WORKS 1. Create a setlist from saved charts, then open Gig Book from Setlists. 2. Create an edition, choose concert roots and capo positions, and add performance notes. Read each written-shape chart. 3. Save the edition, build its complete PDF, preview it and share the PDF with its edition record. Transpose, capo suggestions, Nashville numbers, setlist Stage Mode, samples and chart history remain available. Stage Mode now displays the written chord shapes that match its recommended capo. Long PDF charts flow across pages without silently clipping their final text. WHAT TO KNOW Up to 20 songs per book and 50 saved editions. Source charts are copied into the edition, so later library edits do not change it. Transposition is chromatic; minor labeling does not reharmonize a song. Use a standard full capo and verify the arrangement before performing. Share only charts you have permission to distribute. iPhone and iPad.

Screenshots

FOLD Stereo to Mono1 screens
Capoflip3 screens

Verdict

The call

The clearest difference is price: FOLD Stereo to Mono at Free against Capoflip's $0.99. FOLD Stereo to Mono also leads on iOS requirement (13.0 vs 17.0). On update cadence, 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

FOLD Stereo to Mono is free to download; Capoflip costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 7 level
FOLD Stereo to Mono versus Capoflip: the parameters behind the verdict, then further details
ParameterFOLD Stereo to MonoCapoflip
PriceFree — better$0.99
Rating5.0 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size11 MB4 MB
Age rating4+4+
DeveloperShelbybark LLCRobert Corbin

In-app purchases

None

FOLD Stereo to Mono

No in-app purchases

None

Capoflip

No in-app purchases

Questions

Is FOLD Stereo to Mono free?
FOLD Stereo to Mono is free to download, with no in-app purchases.
Is Capoflip free?
Capoflip costs $0.99, with no in-app purchases.
Do FOLD Stereo to Mono or Capoflip have ads?
Neither FOLD Stereo to Mono nor Capoflip shows ads.
Which is updated more often, FOLD Stereo to Mono or Capoflip?
FOLD Stereo to Mono ships an update fortnightly, and Capoflip fortnightly. Most recently, FOLD Stereo to Mono was updated on October 24, 2026 and Capoflip on October 25, 2026.

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