K7D vs ChStrip
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
K7D
This app offers a vintage tape delay effect with analog emulation and modern controls. It recreates classic hardware echo machines for a warm, characterful sound. Use it standalone or as an AUv3 plugin in iOS DAWs.
- Analog modeled dual playhead delay
- Modeled microphone input with saturation
- Normal and Ping Pong modes
- High pass and Low pass feedback filters
- Powerful LFO time modulation
- BPM syncable delay time
- MIDI delay time modulation
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K7D is a powerful and affordable, vintage tape delay effect plugin for iOS. K7D recreates the hardware echo machines of the past using Imaginando’s signature style of obsessive analog emulation, but with an enhanced level of control from a sleek, modern interface. Using this approach allows a whole new world of creative possibilities, while still retaining a warm, full-bodied analog sound, bursting with character and personality. To give K7D it’s distinctive analog flavour, we studied and analysed the tiny details of what makes classic hardware delays great, and painstakingly recreated every subtle nuance for a fantastically authentic sound. Available as a standalone app and audio unit plugin, you can use it digital audio stations for iOS such as Garage Band, AUM, Cubasis, Auria, Audiobus, etc. Features - 1ms to 1 sec. dual playhead analog modeled delay with noise, tape distortion and mechanical vibration models - Modeled microphone input with pre-amp saturation - Normal and Ping Pong modes - Optimized gain staging and saturation algorithms for very musical results - Delay time spread between heads and stereo width control - High pass and Low pass filter on feedback path - Powerful LFO bipolar time modulation with multiple waveforms (sine, triangular, saw, square, sample and hold and filtered sample and hold) and possibility of inverted LFO phase on second play head (for added stereo imaging) - Delay time syncable with BPM - Possibility of delay time modulation via incoming midi notes - Oscilloscope visualisation of audio waveform and LFO waveform - Built-in patch manager - Audiounit compatible
ChStrip
This audio plugin offers a three-band equalizer and a dynamic range compressor for music production. It incorporates analog circuit modeling techniques for a natural sound. Ideal for tracking and mixing, it enhances audio quality with precise control.
- 3-band equalizer
- Low shelving filter
- Mid peak/notch filter
- High shelving filter
- Stereo dynamic range compressor
- Feedback topology
- Side chain high pass filter
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ChStrip is an AudioUnit Extension channel strip plugin which contains an equalizer and a compressor for tracking and mixing. The equalizer is a three band EQ consists of low shelving filter, mid peak / notch filter and high shelving filter. The compressor is a dynamic range compression module uses feed-back topology for natural and musical sound. Both of the equalizer and compressor are not emulation of the particular hardware, but they are build by incorporating the techniques used for the analog circuit modeling. Features ChStrip (AUv3) Equalizer - 3-band EQ, Low Shelving filter, Mid Peak / Notch filter and High Shelving filter. - This Mid filter is different from the mid filter of the channel equalizer plugin. Bandwidth is wider (1 octave) and gain is reduced (+/- 14 dB) Compressor - Stereo dynamic range compression - Feedback topology (Implemented by delay free feedback loop) - Side chain high pass filter - Soft clip, Peak Limiter - Auto fade in and auto fade out Host Application Host application uses system audio input as an audio source and processed audio signal is routed to the system audio output.
Screenshots
Verdict
The clearest difference is rating: ChStrip at 5.0 against K7D's 4.6. ChStrip also leads on review sentiment (100% vs 80%) and price ($1.99 vs $3.99). K7D's advantage is ratings volume (79 vs 8). On update cadence, 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
K7D costs $3.99 and ChStrip $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ChStrip holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: K7D has 79 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 80% of K7D's written reviews are positive against 100% of ChStrip's.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 22, 2026 and October 26, 2026 respectively.
| Parameter | K7D | ChStrip |
|---|---|---|
| Price | $3.99 | $1.99 — better |
| Rating | 4.6 (79 ratings) | 5.0 (8 ratings) — better |
| Positive reviews | 79.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 79 — better | 8 |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 13.5 — better |
| Further details — not scored | ||
| Size | 113 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Imaginando Lda | Ryo Togawa |
Customer experience
K7D
ChStrip
In-app purchases
K7D
No in-app purchases
ChStrip
No in-app purchases








