Comparison

moForte Guitar vs WretchUp

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

Head to head
About

moForte Guitar

This virtual guitar app uses physical modeling to replicate the expressive sound and performance techniques of a real electric guitar. It offers a vast chord library, customizable effects, and recording capabilities for musicians.

Highlights
  • Physical modeling sound engine
  • Strumming and PowerChord modes
  • Modeled feedback and distortion
  • 9,500+ chords
  • Customizable effects chain
  • Recording and sharing performances
  • Chart creation tool
Features
Read full description

The Classic moForte Guitar, introduced in 2012, is the first virtual guitar based on modeling the physics and performance techniques of the guitar. Because the moForte Guitar is modeled rather than based on playing back samples, the performance experience is uniquely expressive and interactive. Based on based on the Physical Modeling research of Dr. Julius O. Smith III of Stanford/CCRMA. Features include: - Strumming and PowerChord modes. - Modeled feedback and distortion like a real metal guitar. - A selection of models for popular types of electric guitars. - Recording and sharing of performances. - 9,500+ chords. - Powerful authoring tool for chart creation - supports custom chords and effect presets. - Modeled guitar articulations including: harmonics, pinch harmonics, slides, palm muting, string scraping, damping and auto-strum. - Fully programmable effects chain including: distortion, compression, wah, auto wah, 4-band parametric EQ, phaser, flanger, reverb and amplifier. iOS/iPadOS 13.7 or better

About

WretchUp

This app offers a unique audio manipulation experience, allowing users to create sonic mayhem with pitch-shifted delays, filters, and sampling. It's designed for live performance and studio use, enabling musicians and sound enthusiasts to generate wild noises and unique effects.

Highlights
  • Pitch-shifted delay with feedback and filter
  • Live performance-oriented controls
  • Gesture-based play
  • Record vocals and instruments
  • Sample and manipulate loops
  • Inter-App-Audio and Audiobus support
Features
Read full description

An effect instrument anyone can play - sonic anarchy in the palm of your hand. iOS Mars: "Barely controlled chaos“, "sonic extremes“, "well suited for live use“ Music App Blog: "if you like the occasional dose of sonic mayhem, then this is an app that will let you make it" WretchUp is the sonic instrument from the imagination of Mouse on Mars Instruments. Used by the duo in their live performances, it's a playable effect inspired by analog hardware. Sing into it, speak into it, plug in an instrument, sample sounds, and then make sonic mayhem. It's been tested in Mouse on Mars' live shows and used in studio albums. But now it's available to anyone - whether you're a musician wanting to create unique sounds or you just want to make some wild noises and frighten friends and enemies. // FEATURES - Pitch-shifted delay with feedback and filter - Unique controls, designed to be used in live performance and tested onstage - Play with gestures, even without looking closely at the screen - Record vocals or instruments from the built-in mic or another input - Sample loops and change their speed - Adjust the feedback loop, pitch, and filter for unique sounds - Make inputs by holding down your finger, or lock input for continuous sampling - Inter-App-Audio supported - Audiobus supported www.mouseonmars.com/mominstruments Features artwork by Rupert Smyth. Pure Data-based, open source patch created by Florian Grote and Peter Kirn with Mouse on Mars. App design by Oliver Greschke. Powered by free and open source software libpd. Note: like all mic-based effects, you need to enable microphone input. If you accidentally did not allow mic input, you can allow later via: Device settings, WretchUp, Data settings, Microphone, allow mic input.

Screenshots

moForte Guitar4 screens
WretchUp3 screens

Verdict

The call

The clearest difference is rating: moForte Guitar at 5.0 against WretchUp's 3.1. moForte Guitar also leads on price ($3.99 vs $4.99). WretchUp's advantage is in-app purchases (none vs 10) and update cadence (every 3 weeks vs every 2 months). On ads, monetization model 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

moForte Guitar costs $3.99 and WretchUp $4.99 up front. moForte Guitar sells 7 one-off in-app purchases. WretchUp asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

moForte Guitar holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: WretchUp has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 76% of moForte Guitar's written reviews are positive against 91% of WretchUp's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

moForte Guitar ships an update every 2 months, WretchUp every 3 weeks. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 3 level
moForte Guitar versus WretchUp: the parameters behind the verdict, then further details
ParametermoForte GuitarWretchUp
Price$3.99 — better$4.99
Rating5.0 (1 ratings) — better3.1 (9 ratings)
Positive reviews76.0% of reviews90.9% of reviews — better
Number of ratings19 — better
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.711.0 — better
Further details — not scored
Size57 MB15 MB
Age rating4+4+
DevelopermoForte.comMoMinstruments GbR

Customer experience

moForte Guitar

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews25 reviews
Positive76.0%
Neutral4.0%
Negative20.0%

WretchUp

All ratings9 ratings
Positive55.6%
Neutral0.0%
Negative44.4%
Written reviews11 reviews
Positive90.9%
Neutral0.0%
Negative9.1%

In-app purchases

7 purchases

moForte Guitar

One-time7
  • Rising Sun Blues2 variantsFree
  • Mountain Aire2 variantsFree
  • Thor's Hammer2 variantsFree
Show 4 more
  • Loki's LamentFree
  • Odious OdinFree
  • Star Spangled Banner Pack$1.99
  • Bourrée in E minor$1.99
None

WretchUp

No in-app purchases

Questions

Is moForte Guitar free?
moForte Guitar costs $3.99, and also offers in-app purchases.
Is WretchUp free?
WretchUp costs $4.99, with no in-app purchases.
Which has better reviews, moForte Guitar or WretchUp?
moForte Guitar is rated higher. moForte Guitar averages 5.0 out of 5 from 1 ratings, while WretchUp averages 3.1 from 9 ratings.
Do moForte Guitar or WretchUp have ads?
Neither moForte Guitar nor WretchUp shows ads.
Which is updated more often, moForte Guitar or WretchUp?
moForte Guitar ships an update every 2 months, and WretchUp every 3 weeks. Most recently, moForte Guitar was updated on October 11, 2026 and WretchUp on October 24, 2026.

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