Comparison

A2V vs Chart Builder

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Audio to video conversion
  • Waveform visualization
  • Social media sharing
  • Works with Voice Memos
  • Simple share sheet integration
Features
Read full description

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).

About

Chart Builder

Read full description

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

A2V4 screens
Chart Builder4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. A2V sells 1 one-off in-app purchase. Chart Builder asks for nothing beyond the download.

Scorecard1 real difference · 9 level
A2V versus Chart Builder: the parameters behind the verdict, then further details
ParameterA2VChart Builder
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 17 months—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS17.0 — better18.5
Further details — not scored
Size4 MB1 MB
Age rating4+4+
DeveloperKaolin FireRetroAge Engineering

In-app purchases

1 purchases

A2V

One-time1
  • Remove Watermark$0.99
None

Chart Builder

No in-app purchases

Questions

Is A2V free?
A2V is free to download, with in-app purchases available.
Is Chart Builder free?
Chart Builder is free to download, with no in-app purchases.
Do A2V or Chart Builder have ads?
Neither A2V nor Chart Builder shows ads.

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