A2V vs Quintens ISA
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).
Quintens ISA
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The ISA mobile app is available to subscribers to the ISA information service. The ISA app makes it possible to: • Scan items from the own assortment and build a scan list • View core data of scanned articles that are stored in the ISA databases • View Safety Data Sheets and Declarations of Performance for the scanned product • Sending the scanned GTINs to your e-mail address or saving them in ISA for further use there. • Sending product card and safety instruction card to your e-mail address. The ISA information service is designed to provide companies with information about hazardous substances and construction products. ISA maps the information need for hazardous substances and construction products for all products that a company registers with ISA. ISA collects all required ISA dangerous goods data, such as Safety Data Sheets and ADR data, from suppliers and makes the legally required documentation available per product.
Screenshots
Verdict
The clearest difference is in-app purchases: Quintens ISA at none against A2V's 1. Quintens ISA also leads on update cadence (every 5 months vs every 17 months) and iOS requirement (13.0 vs 17.0). On price, ads and device support 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. Quintens ISA asks for nothing beyond the download.
A2V ships an update every 17 months, Quintens ISA every 5 months. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.
| Parameter | A2V | Quintens ISA |
|---|---|---|
| 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 | Every 5 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Kaolin Fire | Quintens Advies & Management B.V. |
In-app purchases
A2V
- Remove Watermark$0.99
Quintens ISA
No in-app purchases









