Comparison

Envision AI vs ALTtext

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

Head to head
About

Envision AI

This app uses AI and OCR to read text, describe surroundings, and identify objects for users who are blind or have low vision. It offers features like instant text reading in multiple languages, document scanning, scene description, and object detection to promote independence.

Highlights
  • Instant text reading in 60+ languages
  • Audio-guided document scanning
  • Scene and object description
  • Barcode scanning for product info
  • People and object detection
  • Image and PDF description
Features
Read full description

Envision is the fastest, most reliable and award-winning OCR app that speaks out the visual world, helping people who are blind or have low vision lead more independent lives. Envision is developed for and together with the blind and low vision community. The app is simple, gets things done and brings the best assistive experience to blind and low vision users. Simply use your phone camera to scan any piece of text, your surroundings, objects, people or products and everything will be read out to you thanks to Envision’s smart artificial intelligence (AI) and Optical Character Recognition (OCR). _____________________ What Envision users say about the app: “Easy going text recognition. Text recognition is outstanding. Good for independence. Ease of use is immaculate” - Noahis from Australia “Amazing. I love it. I'm blind and I love how easy it is to use. Amazing job!!!!” - Matt from Canada ___________________ With full talkback support, Envision enables you to: Read all kinds of text: • Instantly read any piece of text in over 60 different languages. • Easily scan your paper documents (single or multiple pages) with the help of audio-guided edge detection. All content is spoken back to you and is ready for export and edit. • Import PDFs and images to get a description of the image and recognition of all the text within it. • Quickly read handwritten postcards, letters, lists and other paperwork. Know what's around you: • Effortlessly describe visual scenes around you. • Detect colour on your clothes, walls, books, you name it. • Swiftly scan barcodes to get extensive information about the products. Find what you're looking for: • Find people around you; the names of your family and friends are spoken out whenever they are in the frame. • Find objects around you; selecting common objects from the in-app list to find them. Share: • Share images or documents from your phone or other apps like Twitter or WhatsApp by selecting Envision from the share sheet. Envision can then read and describe those images for you. ___________________ Feedback, questions or feature requests? We welcome everyone to provide their feedback about the Envision app, as we’re constantly improving. Please email us at support@LetsEnvision.com. ___________________ Please read our Terms of Use & Privacy Policy: https://www.LetsEnvision.com/terms If you're still reading all the way down here, we'd like to thank you for your diligence, attention to detail and general commitment to finishing something that you started. Just like all the team working at Envision!

About

ALTtext

Features
Read full description

ALT text with one click, right where you post. ALTtext puts a "Generate with ALTtext" button directly inside the ALT text field on: • Bluesky • X / Twitter • Facebook Attach an image, open the platform's ALT text field, and the button is already there. One click writes an accurate, accessible description in place — no copying, no switching tabs, no excuses. Support for Instagram, Mastodon, Threads, and more is rolling out. WORKS ON EVERY OTHER SITE TOO Right-click any image on any page → "Generate ALT text with ALTtext." The description appears instantly, ready to copy. BUILT FOR BLIND AND LOW-VISION USERS AS WELL ALTtext isn't just for people adding descriptions — it's for people who need them. Meet an uncaptioned image and generate the description yourself: results are announced to your screen reader (VoiceOver, NVDA, JAWS) and receive focus, so you hear the description immediately instead of depending on whoever posted it. WHY ALT TEXT MATTERS The WHO estimates 2.2 billion people live with vision impairment. For millions using screen readers, ALT text IS the image — and most images on the web still have none. ALTtext removes the last excuse. FREE TO USE The core generator is free every day, no account needed. ALTtext Pro lifts the limits for people who post at volume — and keeps the free tier running for the next person. PRIVACY Images you describe are sent to the ALTtext engine only to generate the description. Nothing is stored, tracked, or shared. Your history stays in your browser. From alttext.org — a public resource for image accessibility.

Screenshots

Envision AI4 screens
ALTtext4 screens

Verdict

The call

The clearest difference is in-app purchases: Envision AI at none against ALTtext's 1. ALTtext's advantage is device support (4 vs 2). On price, ads 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. ALTtext sells 1 one-off in-app purchase. Envision AI asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Envision AI versus ALTtext: the parameters behind the verdict, then further details
ParameterEnvision AIALTtext
PriceFreeFree
Rating4.2 (595 ratings) — better—
Positive reviews58.0% of reviews—
Number of ratings595 — better—
Update frequencyEvery 5 weeks—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS16.615.0 — better
Further details — not scored
Size373 MB1 MB
Age rating4+4+
DeveloperEnvision Technologies B.V.Todd Lambert

Bugs and requests

Envision AI

Reported bugs

4 issues
  • Instant text reader mixes languages and has poor formatting
  • Document scanning sometimes fails to detect document edges
  • Facial recognition often misidentifies people
  • Barcode scanner not working reliably in latest version

Requested features

4 requests
  • Add support for more languages, including Punjabi and Gujarati
  • Improve handwriting recognition accuracy
  • Implement offline mode for text recognition
  • Add a feature to save and organize recognized text

ALTtext

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Envision AI

No in-app purchases

1 purchases

ALTtext

One-time1
  • ALTtext Pro$12.99

Questions

Is Envision AI free?
Envision AI is free to download, with no in-app purchases.
Is ALTtext free?
ALTtext is free to download, with in-app purchases available.
Do Envision AI or ALTtext have ads?
Neither Envision AI nor ALTtext shows ads.

Other comparisons