TfxEcho vs Song Chef
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TfxEcho
This audio plugin offers a warm, dark echo effect inspired by analog delay units. It allows for adjustable delay times, feedback, and filters, with modulation capabilities and tempo syncing. The plugin captures high-frequency signals for a versatile sound.
- Echo and delay effect
- BBD-inspired delay lines
- Adjustable delay time (20-1200 ms)
- Feedback control (0-100%)
- Low-pass and high-pass filters
- Modulation rate and width
- Tempo sync
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TfxEcho is an echo effect AudioUnit Extension plugin. It uses delay lines which are inspired by BBD (bucket brigade device). BBD is used in various analog delay unit and is known for its warm and dark sound. The delay line uses fixed length buffer and an artificial clock to sample input signal in variable sampling rate. When the delay time is changed, the delay line can produce pitch change effect which is similar to the behavior of the BBD based analog delay unit. The delay line is inspired by BBD, but it is not emulation of the any particular BBD. Unlike the typical BBD based delay unit, frequency range of the delay line is not limited. The delay line is capable to capture signal in higher frequency up to about 22KHz. Features AudioUnit Extension - Delay Time: From 20 ms to 1200 ms - Feedback: From 0 % to 100 % - Adjustable lowpass filter and high-pass filter. - Modulation rate: From 0.01 Hz to 10 Hz - Modulation width: From 0 ms to +/- 10 ms - Delay time can be synced to tempo provided by the host application. Host Application Host application uses system audio input as an audio source and processed audio signal is routed to the system audio output.
Song Chef
Create personalized songs from your spoken messages. Simply provide your voice, message, and choose a style, and the app crafts custom lyrics and music. Share your heartfelt creations as audio or text with lyrics.
- Speak-synced vocals
- Dozens of song styles
- Custom lyric generation
- Audio or text + lyrics output
- Save creations to device
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Song Chef turns your feelings into custom songs — in your voice. It’s not how it sounds - It’s what it says. No music skills required - just your voice, message, and heart. Not a singer? No problem. This isn’t about hitting notes — it’s about hitting what you want to say. Perfect for: • Love / Romance (Simple love songs, Second Base, Anywhere With You, Kiss and Make Up, more..) • Birthday surprises • Apologies (I'm sorry) • Thank You • Encouragement • Congratulations & Milestones (Graduation) • Holidays (Mother's Day, Father's Day, Christmas, Hanukkah, Happy New Year, Fourth of July) • Friendship (Say Something Nice) • Songs about your dog (Ruff!) • Sweet messages to friends and family Features: • Speak-synced vocals (no singing needed) • Dozens of styles and “recipes” • Custom lyrics created from your answers • Send as audio or text + lyrics • Save your creations on your device. Whether you want to say “I love you,” “I’m sorry,” or “I miss you,” Choose a theme, answer a few questions, and Song Chef writes lyrics, adds music, and syncs your voice to the beat.
Screenshots
Verdict
The clearest difference is in-app purchases: TfxEcho at none against Song Chef's 2. TfxEcho also leads on ratings volume (12 vs 1) and iOS requirement (13.5 vs 16.6). Song Chef's advantage is update cadence (every 10 days vs every 3 months) and rating (5.0 vs 4.7). 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
TfxEcho costs $4.99 and Song Chef $0.99 up front. Song Chef sells 2 in-app purchases, starting at $5.99 per month. TfxEcho asks for nothing beyond the download.
Song Chef holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: TfxEcho has 12 ratings behind it against 1, so its average is the more settled of the two.
TfxEcho ships an update every 3 months, Song Chef every 10 days. Both last shipped on November 3, 2026.
| Parameter | TfxEcho | Song Chef |
|---|---|---|
| Price | $4.99 | $0.99 — better |
| Rating | 4.7 (12 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 12 — better | 1 |
| Update frequency | Every 3 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.5 — better | 16.6 |
| Further details — not scored | ||
| Size | 1 MB | 155 MB |
| Age rating | 4+ | 4+ |
| Developer | Ryo Togawa | Song Chef LLC |
Customer experience
TfxEcho
Song Chef
In-app purchases
TfxEcho
No in-app purchases
Song Chef
- Unlimited access$5.991 Month
- Song Chef Premium$39.991 Year









