A2V vs Chart Builder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
A2V
Easily transform audio clips into shareable videos featuring their waveforms. Ideal for social media sharing when direct audio uploads aren't supported. Simply use the share sheet to convert your sound into a visual format.
- Audio to video conversion
- Waveform visualization
- Social media sharing
- Works with Voice Memos
- Simple share sheet integration
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Social apps don't accept bare audio. A2V fixes that: it turns any audio clip — a voice memo, a song sketch, a podcast moment, a lecture — into a clean waveform video you can post to feeds, stories, and messages. Share it in seconds. From Voice Memos or any app, tap Share and choose "Convert to Video." Or open A2V to import from Files, record something new, or restyle an old clip. NINE VISUALIZATIONS Wave, Radial, Spectrum, Ribbon, and Spectrogram for classic audio looks — plus Aurora, Pulse, and Starfield, neon visuals that move with the sound and give every recording its own feel. MADE FOR EVERY PLATFORM Export Square (1:1), Vertical (9:16) for stories and short video, or Wide (16:9) for the big players. Pick your waveform and background colors to match your brand. ON-DEVICE CAPTIONS Auto-transcribe speech into burned-in captions so your words land even on mute. Captions are generated entirely on your device (requires iOS 26). A LIBRARY, NOT A ONE-SHOT Every render is saved. Replay it, rename it, share it again, or make a New Version in a different style — without re-importing the audio. PRIVATE BY DESIGN No account. No uploads. No tracking. Recording, transcription, and rendering all happen on your device. Your audio never leaves your phone. ALSO - Live preview before you render - Record straight into the app - Universal — iPhone and iPad - A Shortcuts action: "Convert Audio to Video" - Handles long imports smoothly A2V is free to use. A one-time in-app purchase removes the small watermark (and it's already free for long-time users — thanks for sticking around).
Chart Builder
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Bring your data to life with Chart Builder, the easiest way to create stunning charts and graphs on your iPhone, iPad, and Mac. Whether you're a student, a business professional, or just someone who loves data, Chart Builder provides the tools you need to create insightful and beautiful visualizations. With a simple and intuitive interface, you can create a variety of charts—including bar, line, and pie charts—with just a few taps. Add your data points, customize your labels, and watch as Chart Builder instantly transforms your numbers into a clear and compelling chart. Key Features: Create Multiple Chart Types: Choose from bar, line, and pie charts to best represent your data. Effortless Data Entry: Quickly add, edit, and manage the data for your charts. Intuitive Interface: A clean and user-friendly design makes chart creation a breeze. Full-Screen View: Immerse yourself in your data with a beautiful full-screen view of your charts. iCloud Sync: Your charts are automatically synced across all your Apple devices. Made for Apple: Chart Builder is a native app built with SwiftUI, ensuring a seamless and responsive experience. Download Chart Builder today and start visualizing your data in a beautiful new way!
Screenshots
Verdict
The clearest difference is in-app purchases: Chart Builder at none against A2V's 1. 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. A2V sells 1 one-off in-app purchase. Chart Builder asks for nothing beyond the download.
| Parameter | A2V | Chart Builder |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 17 months | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.0 — better | 18.5 |
| Further details — not scored | ||
| Size | 4 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Kaolin Fire | RetroAge Engineering |
In-app purchases
A2V
- Remove Watermark$0.99
Chart Builder
No in-app purchases









