Comparison

Speak Unit vs Riffler Flow

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

Head to head
About

Speak Unit

This audio extension synthesizes speech for music production. Input up to twelve phrases, each triggered by a specific musical note, to add robotic vocals to your compositions. It's ideal for creating unique vocal effects in music software.

Highlights
  • Speech synthesis audio extension
  • Phrase input up to twelve entries
  • Note-triggered phrase playback
  • Voice selection
  • Standalone app for auditioning
Features
Read full description

Speak Unit is a speech synthesiser audio extension for use in Garageband and other compatible music software. You enter up to twelve phrases that are each triggered by a unique note. Ideal if you need robotic vocal for your musical compositions, or any other creative uses. To use - Add the Speak Unit audio extension instrument to a track in your music software - Select a note using the up and down buttons on the Speak Unit's chest. - Enter a phrase - Choose a voice - Press the save button to store the phrase in the Speak Unit ready for synthesising. - Press the speak button if you wish to audition the phrase. - Play or sequence that note to play the phrase in your composition. The stand alone app can be used to speak the phrases triggered by a row of note buttons.

About

Riffler Flow

Instantly generate clean, arpeggio-based guitar riffs for various music genres. Explore preset styles or customize your own unique sounds with realistic tones and extensive chord options. Ideal for producers, songwriters, and musicians seeking creative inspiration.

Highlights
  • Instant arpeggio-based riff generation
  • Preset styles for Hip-Hop, Pop, EDM, Rock
  • Customizable settings for personalization
  • AUv3 plugin integration
  • Realistic guitar and synth tones
  • Chord and progression generator
  • Tablature output
Features
Read full description

Introducing Riffler Flow – Create instant clean guitar riffs. The original Riffler was perfect for instantly making heavy, distorted, scale based riffs. Riffler Flow is a brand new app that instantly generates softer, clean, arpeggio based riffs at the press of a button. Unleash a torrent of clean guitar arpeggios with Riffler Flow, the go-to app for crafting catchy and copyright-free riffs tailored for modern genres. Simply tap "Create" and let the magic of arpeggios elevate your music production to new heights. PRESETS Dive into the world of Riffler Flow by selecting from a diverse range of preset styles specifically curated for Hip-Hop, Pop, EDM and Rock. Tap "Create" and watch as unique arpeggio-driven riffs come to life. Each riff is presented in intuitive tablature format, allowing you to both listen and save your musical creations. CUSTOMIZATION For those seeking a deeper level of control, Riffler Flow offers an extensive array of customizable settings. Fine-tune and personalize your riffs to you to create your signature sound. WHO WOULD USE RIFFLER FLOW? • Music producers and beatmakers exploring fresh, clean guitar elements for their tracks. • Songwriters looking for a burst of inspiration to infuse their compositions with captivating arpeggios. • Artists and musicians in search of a virtual guitarist to elevate their sound in limitless jam sessions. • Producers aiming to distinguish themselves by building a library of distinctive arpeggio riffs, setting their work apart from the crowd. • Ultimately, Riffler Flow is great fun – ideal for anyone eager to experiment and craft their own musical masterpieces! AUv3 PLUGIN Riffler Flow stands as both a standalone app and an AUv3 plugin, seamlessly integrating into host music applications. Sync it within your preferred host app, sending audio and MIDI to other effects, synths, samplers, and virtual instruments. REALISTIC TONES Riffler Flow's cutting-edge audio engine ensures breathtakingly realistic guitar tones, delivering a clean and vibrant sonic palette for your arpeggio explorations. There are various guitar tones featuring different effects along with an atmospheric reversed guitar sound and various different synth tones. There are additional delay and reverb controls for each sound. CHORDS AND PROGRESSION GENERATOR Riffler Flow features 28 different chord types ranging from basic major and minor chords to advanced jazz voicings. Chords can be entered manually or entire progression can be generated automatically by Riffler Flow. The generated progressions can be fined tuned using the "Character", "Complexity" and "Changes" controls.

Screenshots

Speak Unit1 screens
Riffler Flow4 screens

Verdict

The call

The clearest difference is price: Speak Unit at $0.99 against Riffler Flow's $14.99. Speak Unit also leads on rating (4.8 vs 4.1) and review sentiment (67% vs 50%). Riffler Flow's advantage is update cadence (weekly vs every 52 months) and ratings volume (25 vs 8). On ads, in-app purchases, 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

CostPrice · In-app purchases · Ads · Monetization

Speak Unit costs $0.99 and Riffler Flow $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Speak Unit holds the better App Store score, 4.8 against 4.1. Both are backed by a comparable volume of ratings — 8 and 25 respectively. Written reviews point the same way: 67% of Speak Unit's written reviews are positive against 50% of Riffler Flow's.

UpkeepUpdate frequency

Speak Unit ships an update every 52 months, Riffler Flow weekly. Both last shipped on October 21, 2026.

Scorecard6 real differences · 4 level
Speak Unit versus Riffler Flow: the parameters behind the verdict, then further details
ParameterSpeak UnitRiffler Flow
Price$0.99 — better$14.99
Rating4.8 (8 ratings) — better4.1 (25 ratings)
Positive reviews66.7% of reviews — better50.0% of reviews
Number of ratings825 — better
Update frequencyEvery 52 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.011.0 — better
Further details — not scored
Size153 MB780 MB
Age rating4+4+
DeveloperRick PeacockJonathan Bell

Customer experience

Speak Unit

All ratings9 ratings
Positive88.9%
Neutral11.1%
Negative0.0%
Written reviews9 reviews
Positive66.7%
Neutral11.1%
Negative22.2%

Riffler Flow

All ratings25 ratings
Positive76.0%
Neutral8.0%
Negative16.0%
Written reviews30 reviews
Positive50.0%
Neutral30.0%
Negative20.0%

In-app purchases

None

Speak Unit

No in-app purchases

None

Riffler Flow

No in-app purchases

Questions

Is Speak Unit free?
Speak Unit costs $0.99, with no in-app purchases.
Is Riffler Flow free?
Riffler Flow costs $14.99, with no in-app purchases.
Which has better reviews, Speak Unit or Riffler Flow?
Speak Unit is rated higher. Speak Unit averages 4.8 out of 5 from 8 ratings, while Riffler Flow averages 4.1 from 25 ratings.
Do Speak Unit or Riffler Flow have ads?
Neither Speak Unit nor Riffler Flow shows ads.
Which is updated more often, Speak Unit or Riffler Flow?
Speak Unit ships an update every 52 months, and Riffler Flow weekly. Most recently, Speak Unit was updated on October 21, 2026 and Riffler Flow on October 21, 2026.

Other comparisons