Spectrolite vs Swiftlet.ai
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spectrolite
This app visualizes sound in real-time using various spectrogram types. Explore detailed audio data with intuitive touch controls and adjustable parameters. An optional purchase unlocks advanced measurement tools.
- Real-time spectrogram visualization
- Constant-Q, linear, and mel frequency scales
- Full human hearing frequency range
- Intuitive touch panning and zooming
- Adjustable gain, Q, and other parameters
- Pro version: grids, scales, spectrum view, tap-to-measure
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Spectrolite visualizes sound as spectrograms in real time. Spectrolite supports constant-Q spectrograms, which use a logarithmic frequency scale for a display where musical notes are evenly spaced. Spectrograms based on linear and mel frequency scales are also supported. The display covers the full frequency range of human hearing. Intuitive touch panning and zooming lets you dive in and explore the spectrograms in detail. Gain, Q, and other parameters can be adjusted in real time and instantly apply to the display of past signals as well as future ones. The Pro in-app purchase adds grids and scales for time, frequency, and amplitude, as well as a spectrum view and a tap-to-measure function. This expands Spectrolite into an audio measurement tool that you can use to measure frequencies, musical pitches, amplitudes, and durations.
Swiftlet.ai
This app captures in-person customer interactions using AI to provide coaching and performance insights. It allows teams to record conversations from various devices and review key moments and trends within the application.
- AI conversation scoring
- Real-time interaction capture
- Performance coaching insights
- Moment and trend analysis
- Multi-device recording
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Swiftlet.ai helps in-person teams capture real customer interactions, score them with AI, and turn every conversation into coaching, recognition, and better performance. Record from your iPhone, Apple Watch, or connected AI wearable, then review insights, moments, and trends in the Swiftlet.ai app.
Screenshots
Verdict
The clearest difference is update cadence: Swiftlet.ai at fortnightly against Spectrolite's every 8 months. Swiftlet.ai also leads on rating (5.0 vs 4.8). Spectrolite's advantage is ratings volume (51 vs 3). On price, ads, in-app purchases and monetization model 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
Both are free to download. Spectrolite sells 1 one-off in-app purchase and Swiftlet.ai sells 2 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.
Swiftlet.ai holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Spectrolite has 51 ratings behind it against 3, so its average is the more settled of the two.
Spectrolite ships an update every 8 months, Swiftlet.ai fortnightly. The most recent releases landed on October 9, 2026 and October 5, 2026 respectively.
| Parameter | Spectrolite | Swiftlet.ai |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (51 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 51 — better | 3 |
| Update frequency | Every 8 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 1 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Waxing Wave | Swiftlet.ai LLC |
In-app purchases
Spectrolite
- Pro$4.99
Swiftlet.ai
- Swiftlet Pro Plan$19.991 Month
- Swiftlet Ultra Plan$99.991 Month
