KeepWaves vs HelvetiKit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KeepWaves
Transform audio recordings into visual art with customizable waveform visualizations. Capture high-quality sound, apply effects, and share your unique acoustic memories as audio, images, or videos. Preserve precious sounds in a way that engages both sight and hearing.
- Customizable waveform visualizations
- High-quality audio recording
- Real-time visualization
- Advanced audio processing
- Multiple export options (audio, image, video)
- Intuitive organization and search
- Interactive playback
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Record sound and turn it into a visual memory with KeepWaves. Capture audio, explore its waveform and customize how your recording looks when you share it. RECORD AND PLAY Record with adjustable sensitivity and gain. Play saved audio with waveform scrubbing and playback controls. MAKE IT YOURS Customize waveform colors, backgrounds and visual settings. Adjust your audio with the available processing controls and select the range you want to export. SAVE AND SHARE Organize and search saved recordings. Export audio, waveform images or videos to share through the apps you choose. KeepWaves Pro is required to make new recordings. Existing recordings remain available to play and export without an active subscription. Monthly and yearly subscriptions are available. Keep your own backups of important recordings. SUBSCRIPTION DETAILS The store shows the price, billing period and any eligible introductory offer before purchase. Payment is charged to your Apple Account at confirmation. Subscriptions renew automatically unless canceled before the renewal deadline shown by the store. Manage or cancel through your store subscription settings. Restore Purchases checks eligible existing access. Terms of Use: https://keepwaves.com/terms Privacy Policy: https://keepwaves.com/privacy
HelvetiKit
A fast, on-device toolbox for developers, offering QR code generation and scanning, color conversions, JSON formatting, JWT decoding, and various text manipulation tools. It prioritizes speed and privacy with an intuitive interface for everyday development tasks.
- QR code generation and scanning
- Color format conversion (HEX, RGB, HSL)
- JSON pretty-printing, minifying, and validation
- JWT decoding
- Text case conversion
- UUID generation
- Hashing (MD5, SHA-1/256/512)
- Base64 / URL encoding/decoding
- Timestamp conversion
- Regex testing and replacement
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Sixteen developer utilities, ready when you need them. HelvetiKit brings everyday conversions and diagnostics into one focused toolbox for iPhone, iPhone Duo, and iPad. Search for a tool, arrange your favorites, and work in a layout that adapts to the available space. CODE AND TEXT - Format, minify, validate, and sort JSON. - Decode JWT headers and payloads. - Encode and decode Base64 text and URLs. - Calculate MD5, SHA-1, SHA-256, and SHA-512 hashes. - Test regular expressions and perform replacements. - Convert text case and generate Lorem Ipsum. COLORS, NUMBERS, AND TIME - Convert HEX, RGB, and HSL colors with a native color picker. - Copy color values and SwiftUI or UIColor snippets. - Convert binary, octal, decimal, and hexadecimal numbers. - Convert Unix timestamps and dates, including milliseconds. - Generate UUIDs in bulk. QR TOOLS - Generate QR codes from text or links. - Scan with the camera or recognize codes in photos. - Save generated QR images to your photo library. NETWORK UTILITIES - Look up DNS records and public IP information. - Measure HTTP response latency for a host you choose. A WORKSPACE THAT FITS Compact navigation keeps tools close at hand. Wider layouts can show the tool sidebar and place input beside results. Refined light and dark appearances, support for larger text, and English and Simplified Chinese make everyday tasks easier to follow. PRIVACY-MINDED BY DESIGN Local conversions run on your device. Network utilities connect only when you run a lookup or request. Camera and photo access are used for QR tools when you choose those features. No separate app account is required. TRY IT, THEN GO PRO Try 10 tool runs for free. An optional Pro purchase unlocks unlimited runs.
Screenshots
Verdict
The clearest difference is in-app purchases: KeepWaves at none against HelvetiKit's 1. KeepWaves also leads on iOS requirement (15.0 vs 18.5). HelvetiKit's advantage is update cadence (every 2 months vs every 19 months). On price, rating, ratings volume and ads 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. HelvetiKit sells 1 one-off in-app purchase. KeepWaves asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for KeepWaves against 5.0 for HelvetiKit. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
KeepWaves ships an update every 19 months, HelvetiKit every 2 months. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.
| Parameter | KeepWaves | HelvetiKit |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 19 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.5 |
| Further details — not scored | ||
| Size | 15 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Arla Services | 阳 张 |
Customer experience
KeepWaves
HelvetiKit
In-app purchases
KeepWaves
No in-app purchases
HelvetiKit
- Pro User$0.99









