Comparison

DelayTool vs ARIA ONE

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

Head to head
About

DelayTool

This application helps musicians and sound engineers calculate precise timing values for musical subdivisions. It automatically updates a table of milliseconds and Hertz based on the entered tempo, ideal for setting up delays and oscillators.

Highlights
  • BPM calculator
  • Tempo input and tap tempo
  • Automatic table updates
  • Calculates milliseconds and Hertz
  • Supports common musical subdivisions
  • Precise delay and oscillator setup
Features
Read full description

DelayTool is a simple BPM calculator for producers, engineers, and musicians. Enter or tap the tempo and watch the table of values update automagically. For each common musical subdivision, you will see times (in milliseconds and Hertz) for the current tempo. Just what you need to precisely set up delays and oscillators!

About

ARIA ONE

Features
Read full description

ARIA ONE is a sound personalization app built from your unique hearing profile. Take the FullScale hearing test — a full-spectrum assessment mapping up to 37 frequencies per ear. Choose Instant, Quick Results, or Full Accuracy pathways. Complete a profile in as little as 8 minutes. Your hearing profile directly powers correction, limiter behavior, presets, and your personalized listening workflow. Three macro controls — Drive, Intensity, and Smoothing — shape the character of your sound. Three mood presets — Calm, Natural, and Intense — switch your full DSP state with a single tap. Play your own music library through your personalized DSP chain with the built-in audio player. ARIA AI gives you access to the full parameter space without touching a single knob. Describe what you want — "make the bass warmer," "tighten the transients," "reduce harshness" — and the AI adjusts one or many parameters at once across correction, dynamics, drive, and limiting. Choose Standard, Fine Tune, or Thinking agents depending on how broad or surgical you want the changes. Keep refining over time instead of learning the parameter space yourself. Presets, hearing profiles, and mood assignments sync across your devices. Use the Advanced View on Mac or Windows to fine-tune your sound with 400+ parameters, then push your presets and moods directly to your phone. Check out a mobile device remotely, dial in its settings from the full desktop interface, and commit changes back. On desktop, ARIA ONE is available as a standalone app and VST3/AUv3 plugin with eight graphing windows and ITU-R BS.1770 loudness metering. Part of the Altitude personalization ecosystem: FullScale, ARIA Studio, Absolute Zero, and Crossfeed. FEATURES Hearing Test • FullScale hearing test — full-spectrum, 125 Hz to 20 kHz • Up to 37 frequencies per ear • Three pathways: Full Accuracy, Quick Results, Instant • Demographic-based average profiles for instant demo • Test history and result export Sound Personalization • High-resolution hearing correction from FIR filters • Adaptive multi-stage lookahead limiting • Four limiter algorithms • Dual-pass dynamics processing • Input adaptive gain normalization Controls • Three macro sliders with curve-to-parameter mapping • Two macro toggle switches • Mood presets: Calm, Natural, Intense • One-tap mood switching with full DSP state swap • Bypass toggle and Crossfeed toggle Audio Player • Built-in player with playlist management • Library browser with import and song actions • Playback queue with drag reorder • Saved playlists with create, rename, sort • Now Playing strip with transport, seek, repeat, shuffle • Dual-source playback: internal player or system audio AI Personalization • Natural language control over the full parameter space • Adjusts correction, dynamics, drive, macros, and limiting • Four AI agents: Standard, Fine Tune, Thinking, Legacy • Device-specific AI-generated live presets • Iterative refinement — keep shaping your sound over time Sync & Devices • Cloud sync for profiles, presets, and mood assignments • Per-device mood preset management • Remote device checkout and commit • Copy and paste moods between devices • Cross-product sync with Absolute Zero • One-way export to ARIA Studio Preset System • Meta, Full, Limiter, EQ, Macro, and Adaptive Input presets • Factory and user preset libraries • Preset browser with category navigation Desktop Advanced View (Mac & Windows) • 400+ DSP parameters • EQ correction curves with multiband EQ overlay • Stereo processing: Mid/Side, LR, width, crossfeed • Macro assignment panel with curve editor • Eight standalone graphing windows • Vectorscope, Polar Sample, Polar Level, FFT, Waveform • ITU-R BS.1770 loudness metering • VST3 and AUv3 plugin formats Onboarding • Guided seven-phase setup flow • Audio verification and volume calibration • AI-assisted demonstration Localization • English, German, Spanish, French, Japanese, Portuguese, Russian

Screenshots

DelayTool1 screens
ARIA ONE4 screens

Verdict

The call

The clearest difference is price: ARIA ONE at Free against DelayTool's $0.99. ARIA ONE also leads on update cadence (every 8 days vs every 42 months) and iOS requirement (15.0 vs 26.0). DelayTool's advantage is in-app purchases (none vs 1). On ads 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

ARIA ONE is free to download; DelayTool costs $0.99 up front. ARIA ONE sells 1 one-off in-app purchase. DelayTool asks for nothing beyond the download.

UpkeepUpdate frequency

DelayTool ships an update every 42 months, ARIA ONE every 8 days. Both last shipped on October 6, 2026.

Scorecard4 real differences · 6 level
DelayTool versus ARIA ONE: the parameters behind the verdict, then further details
ParameterDelayToolARIA ONE
Price$0.99Free — better
Rating5.0 (5 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings5 — better—
Update frequencyEvery 42 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.015.0 — better
Further details — not scored
Size2 MB419 MB
Age rating4+12+
DeveloperJoel PerryAltitude Audio

In-app purchases

None

DelayTool

No in-app purchases

1 purchases

ARIA ONE

One-time1
  • ARIA AI Credits — 20 Pack$19.99

Questions

Is DelayTool free?
DelayTool costs $0.99, with no in-app purchases.
Is ARIA ONE free?
ARIA ONE is free to download, with in-app purchases available.
Do DelayTool or ARIA ONE have ads?
Neither DelayTool nor ARIA ONE shows ads.
Which is updated more often, DelayTool or ARIA ONE?
DelayTool ships an update every 42 months, and ARIA ONE every 8 days. Most recently, DelayTool was updated on October 6, 2026 and ARIA ONE on October 6, 2026.

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