K3 Tones vs PatchLens
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
K3 Tones
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A fun and free tone generation app. Choose Prime numbers, Healing frequencies; Earth Pulse derivatives, Schumann resonance (audible), and make your own Custom tones. Load and Save from Files (including Cloud). Choose the number of channels to generate tones with, from Mono (1 channel) all the way up to Atmos 9.1.6 (16 channels), with cool waveform graphs (pinch-able) to show each category of tone being generated, and a summary waveform graph for the entire mess that you have created! Three selectable Phase Adjustments can also be applied (None, Tri-Phase, and Five-Phase). And don't worry that you can't get a 16-channel amplifier and speaker setup connected to your Apple Device - you can click on the "Mix Spatial" button and get Spatial Audio output generated (best listened through Air Pods).
PatchLens
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Never lose a great patch again. Photograph your synth, pedal, or semi-modular rig, mark the knobs and jacks that matter, and recall the exact sound in seconds. The demo and 3 patch records stay free; Pro Lifetime is a one-time unlock. Every musician knows the feeling: you spend an hour dialing in the perfect sound, move on, and can never quite find it again. PatchLens turns that moment into a permanent, searchable record: take a photo, tap the knobs and jacks that matter, add the values and notes that made it work, and it's yours forever. Take or import a photo, mark the knobs and jacks that matter, add values and notes, then search your local patch library later. Optional on-device text recognition can suggest visible panel labels, but you stay in control of every saved value. PatchLens does not require an account, does not upload your photos, and does not promise automatic universal knob or cable detection. Pro Lifetime is a one-time in-app purchase that unlocks the full local patch library, on-device OCR label assist, and recall-sheet sharing. The bundled demo and 3 patch records stay free. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://bonega.ai/patchlens/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: K3 Tones at none against PatchLens's 1. PatchLens's advantage is update cadence (weekly vs every 8 months). On price, ads, device support and iOS requirement 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. PatchLens sells 1 one-off in-app purchase. K3 Tones asks for nothing beyond the download.
K3 Tones ships an update every 8 months, PatchLens weekly. Both last shipped on November 12, 2026.
| Parameter | K3 Tones | PatchLens |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 8 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | kadosh3, llc | Clashware Sàrl |
In-app purchases
K3 Tones
No in-app purchases
PatchLens
- Pro Lifetime$4.99
