Round Trip Latency Meter vs D
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Measures real-world round trip audio latency
- Plays test tones
- Records returning tones
- Requires loopback cable connection
- Tests iOS audio systems
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>>> 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)
D
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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
Verdict
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
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.
| Parameter | Round Trip Latency Meter | D |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 31 months | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | ONYX Apps | Shoma Kondo |
In-app purchases
Round Trip Latency Meter
No in-app purchases
D
- D-Chorus Full Version$4.99
Questions
Is Round Trip Latency Meter free?
Is D free?
Do Round Trip Latency Meter or D have ads?
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