Comparison

Round Trip Latency Meter vs D

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

Head to head
About

Round Trip Latency Meter

This app measures the real-world round trip latency of an iOS audio system. It plays test tones and records their return to calculate latency, requiring a loopback cable connection.

Highlights
  • Measures real-world round trip audio latency
  • Plays test tones
  • Records returning tones
  • Requires loopback cable connection
  • Tests iOS audio systems
Read full description

>>> Check out the demo videos at onyx3.com/LatencyMeter LatencyMeter app measures the real-world Round Trip Latency (RTL) of a given iOS audio system*. It functions by playing short test tones while simultaneously recording (listening for) the tones to return back to the input. This technique requires patching a loopback cable between audio system’s input and output. (* iOS audio system here refers to the combination of an iPhone/iPad paired with particular external audio interface)

About

D

Read full description

D-Chorus is a BBD-style spatial chorus for iPhone and iPad. Use it as a standalone audio app or insert the included AUv3 effect in a compatible host such as GarageBand. Designed for width with minimal audible pitch wobble, D-Chorus combines very slow, shallow modulation with opposite-phase left and right movement. Its four modes range from subtle widening to a deep, expansive chorus that feels more like space than an obvious sweep. FEATURES - Four vintage spatial-chorus modes - Opposite-phase left and right modulation - Equal-power Depth dry/wet blending - Width control from mono to hyper-wide - Adjustable input gain from -12 to +12 dB - BBD-style delay and compander behavior - Optional 2x and 4x oversampling - Standalone iOS/iPadOS app - AUv3 audio effect for compatible hosts TRY BEFORE UNLOCKING The app provides 10 minutes of full-featured active use, shared between the standalone app and AUv3 extension. Demo time advances only while audio is actively processing. A one-time, non-consumable In-App Purchase unlocks unlimited use in both formats. Restore Purchases is available in the standalone app. D-Chorus is suited to synthesizers, guitars, vocals, electric piano, and pads that need stable dimension and stereo depth.

Screenshots

Round Trip Latency Meter2 screens
D2 screens

Verdict

The call

The clearest difference is price: D at Free against Round Trip Latency Meter's $9.99. D also leads on iOS requirement (16.0 vs 18.0). Round Trip Latency Meter'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

D is free to download; Round Trip Latency Meter costs $9.99 up front. D sells 1 one-off in-app purchase. Round Trip Latency Meter asks for nothing beyond the download.

Scorecard3 real differences · 7 level
Round Trip Latency Meter versus D: the parameters behind the verdict, then further details
ParameterRound Trip Latency MeterD
Price$9.99Free — better
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 31 months—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhoneiPhone, iPad — better
Requires iOS18.016.0 — better
Further details — not scored
Size4 MB28 MB
Age rating4+4+
DeveloperONYX AppsShoma Kondo

In-app purchases

None

Round Trip Latency Meter

No in-app purchases

1 purchases

D

One-time1
  • D-Chorus Full Version$4.99

Questions

Is Round Trip Latency Meter free?
Round Trip Latency Meter costs $9.99, with no in-app purchases.
Is D free?
D is free to download, with in-app purchases available.
Do Round Trip Latency Meter or D have ads?
Neither Round Trip Latency Meter nor D shows ads.

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