# K7D vs Sunnandaeg

The clearest difference is update cadence: Sunnandaeg at every 5 days against K7D's every 3 months. K7D's advantage is price ($3.99 vs $4.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

K7D costs $3.99 and Sunnandaeg $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

K7D ships an update every 3 months, Sunnandaeg every 5 days. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | K7D | Sunnandaeg |
| --- | --- | --- |
| Price | **$3.99** | $4.99 |
| Rating | **[4.6 (79 ratings)](https://appshunter.io/ios/app/k7d-tape-delay/id1460245991/reviews)** | — |
| Number of ratings | **79** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | Paid | — |
| Size | 114 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Imaginando Lda](https://appshunter.io/developer/895445015) | [Kei Odaka](https://appshunter.io/developer/6807615300) |

## What reviewers say

### K7D

[App page](https://appshunter.io/ios/app/k7d-tape-delay/id1460245991)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🎶 Incredible sound quality
- 🎨 Creative and musical delay
- 💡 Generous presets and easy to use
- 💰 Top-tier for the price
- 🕰️ Authentic tape delay feel

**What reviewers complain about**

- 💻 Extreme lag and crashes
- 🐛 Audio delay issues and glitches
- ⚠️ High resource usage
- ❌ No background audio standalone
- 📉 Randomiser not working (initially)

**Reported bugs**

- App crashing with many instruments
- Project crashes and data loss
- App not opening after crashes
- App deleting progress
- Randomiser not working

**Requested features**

- Fix background audio standalone
- Fix randomiser feature
- Improve CPU efficiency
- Make iPad and iPhone versions compatible
- Add reverse playback option


### Sunnandaeg

[App page](https://appshunter.io/ios/app/sunnandaeg/id6807615298)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is K7D free?

K7D costs $3.99, with no in-app purchases.

### Is Sunnandaeg free?

Sunnandaeg costs $4.99, with no in-app purchases.

### Do K7D or Sunnandaeg have ads?

Neither K7D nor Sunnandaeg shows ads.

### Which is updated more often, K7D or Sunnandaeg?

K7D ships an update every 3 months, and Sunnandaeg every 5 days. Most recently, K7D was updated on November 6, 2026 and Sunnandaeg on November 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*