EdTech Discovery
Argus

Named after the hundred-eyed watchman of Greek myth, Argus watches the education landscape: spotting new opportunities, pressure-testing the ventures we're building, and tracing every read back to the real-world signals behind it.

Updated Sep 14, 2026 · 44 ideas · 19740 signals

Signals

The evidence library: the raw signals the pipeline is watching across the education ecosystem. Every idea is built from these.

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Reviews: Duolingo

[5/5] Idk

Duo is great for learning languages, my library teacher has a streak of 7 years, almost 8… though i still canton figure out how to practice the math…

App Store review · no public link
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Reviews: Duolingo

[5/5] Duolingo is helpful

It helps me a lot even tho I feel bad for not doing lesson I still remember what I learned or u gives u a test to see if u still remember the words that we learn together

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Reviews: Duolingo

[1/5] I don’t recommend it.

mocking app

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Reviews: Duolingo

[2/5] Issues and bugs

If you are trying to learn it might be good to know that Duolingo is shear memorization there is no explaining of grammar or gendered language that would help you understand if you are only using Duolingo you have to make guesses when to use what word for example german has 3 different words for “the” and they all depend on what the subject is but you don’t know what gender each word is or what gender each “the” is. I also know that Duolingo did a mass firing of employees and now uses AI to translate languages of course this leads to worse translations but they could at least have it explain issues with grammar when you get a question incorrect. (Also I did a unit check-in and did it correctly but then the next day i opened the app and a streak freeze had been used because it didn’t register it I opened it later that day and then it registered that I had completed a lesson the previous day but it still didn’t give me my streak freeze back) Another issue is there are multiple ways to tr

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Reviews: Duolingo

[5/5] Duo is great!

👍

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Reviews: Duolingo

[2/5] Forced “Super” on me!

App is cool. I am learning. But the ads are crazy. I guess I put myself on the “super” plan - which I never meant to do. After I’ve completed my lesson, that “super” ad popped up (with no “x” button) and since I got a life and I was in a rush to do the lesson and keep my streaks flowing, I just pressed continue- thinking the that “super” advertisement was going to give me a “yes” or “no” option if I wanted to join (which they didn’t) So I hope they don’t try to charge me. I don’t mind using the free plan (originally) and coming up once a day to do 1-2 lessons. There’s tons of lessons out there that’s free - this app was told from a friend. Other than that, I can go elsewhere.

App Store review · no public link
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Reviews: Duolingo

[5/5] صنعاء

جيد جداً

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Reviews: Duolingo

[4/5] Amazing

Great and amazing but my only complaint is the energy because unless you have enough energy you can’t do a bunch of lessons

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Reviews: Duolingo

[2/5] Shouldn’t be allowed

Changing the icon for the app to something ugly when you don’t open the app should be illegal. Very annoying behavior by Duolingo and crosses a line for me.

App Store review · no public link
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Reviews: Duolingo

[4/5] Negative themes

Wonderful app that is teaching me how to speak Spanish. Thank you. I only use Duolingo once a day for one or two lessons. I think it’s offensive to punish me if I miss a day or two by changing my screen icon to look like something evil! I also am offended by earlier lessons that featured same sex dating.

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Reviews: Duolingo

[5/5] Wonderful creative learning for ALL ages

duolingo had provided me, my family and friends the opportunity to learn a things we would never get the opportunity to otherwise together!

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Reviews: Duolingo

[3/5] Getting worse

I took it off my Home Screen this week because of the obnoxious and ugly icons they keep pushing. My 2k+ streak has suffered for it but I’m not putting this junk on my phone. The cut scenes are getting ridiculous and the heavy upgrade push to an already premium member is too much. The “free for all” push is purely marketing now. It’s a shame, this app used to be so much better. As for this most recent annoyance, this app will not find its way to my home screen until I can set a standard unchanging icon for it.

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Reviews: Duolingo

[5/5] Loveeeee

Love the game it helps me do Japanese and it’s soooo much fun it lets me know when to do my lessons on time! Who ever created this…THANK YOU SOOOOO MUCH IT HELPS ME A LOT THANK YOU THANK YOU THANK YOU I COULD BOW TO THANK YOU! 😊

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Reviews: Duolingo

[5/5] I love

I love this now I can speak French. Duolingo is so cool such a great app!

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Reviews: Duolingo

[5/5] Streak Society Icon

They disabled the option to change the app icon back to the orange Streak Society Icon and forced me to have an ugly green one with Duo and cucumbers on the eyes. Considering deleting the app despite 1925 day streak. Changing review score; issue resolved a 1-2 weeks later. Thank you!

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Reviews: Duolingo

[1/5] Don't recommend - uses AI and has too many ads

In the past, I thought that Duolingo was great. And it was a decent way to learn languages back then. But now, Duolingo is bad. Very bad. I will go over why it is. 1. Duolingo replaced much of it's staff with AI. Generative AI is horrible because it's entirely based on stealing the hard work of people and mashing it into slop. 2. After every single lesson, you get an ad. Every single ad is just begging you to get a Duolingo subscription. And these ads are very loud, which is extremely annoying. And if you mute the ad, it'll become unmutted when you change the volume on your device.

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Reviews: Duolingo

[1/5] Scam

Has back door access to your phone and everything on it. They steal personal data to sell.

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Reviews: Duolingo

[1/5] Не вход в аккаунт

Не входи в аккаунт

App Store review · no public link
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Reviews: Duolingo

[1/5] Don’t get this app if you actually want to learn languages

this app used to be alright, it didn’t have paywalls, there were no “lives” and it taught in a relatively linear pattern how a child would learn the language growing up. Now it is just fueled by money and greed. If you want people to learn a language why would you limit the amount of time they can spend learning every day if they don’t pay a subscription. just plain stupidity. but the reality is they don’t want you to learn the language they want you to pay them a subscription every month and hinder you from actually learning so you have to keep paying. this app will give you questions that purposely make you lose hearts so that you can’t continue learning in an attempt to make you buy a subscription. lindo means pretty/cute/beautiful, but they say it means nice so they can purposely make you get questions wrong when they ask you what the word for “nice” is. sometimes it’s simpático sometimes it’s lindo but they never give you enough detail to know for sure. same thing with tu and uste

App Store review · no public link
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Reviews: Duolingo

[1/5] Free trial scam

I did the one week free trial, then canceled so I wouldn’t be charged the new exorbitant rate they charge now, but surprise, I was charged anyways. This app sucks in so many ways, most notably the voice recognition - sooo very bad!!

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Reviews: Google Classroom

[1/5] Bad

I have to do school work

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Reviews: Google Classroom

[1/5] HATED

I hate because I HATE SCHOOL

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Reviews: Google Classroom

[5/5] My school uses it

It simple to use and you can access almost everything. You can also add classes and see archived classes

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Reviews: Google Classroom

[5/5] School

Google Classroom is the most helpful thing for middle school and just school!!!

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Reviews: Google Classroom

[1/5] Bad

IT WONT LET ME DOWNLOAD AND NOW MY TEACHERS ARE MAD AT MEE I DID NOTING FIX THIS NOW 😡👊

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Reviews: Google Classroom

[1/5] this sucks

YOU GUYS ARE THE RWASON WHY MY SCHOOL FORCES ME TO WORK 19 HOURS A DAY

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Reviews: Google Classroom

[5/5] I’m a freshman this year😝🤘

I like this app but to do homework ugh no homework Ruins my life but I find it useful for Teachers and sometimes for me😎

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Reviews: Google Classroom

[5/5] amazing app

listen, i dont know who is rating a one star but this is a perfectly fine and amazing app. its organized perfectly to suit everyones needs.

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Reviews: Google Classroom

[1/5] HORRENDOUS

I actually want to rip this app from limb to limb and fart all over it then throw my own feces at it.

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Reviews: Google Classroom

[1/5] Horrible made everything difficult

I try to use the app for school and it doesn’t work it’s hard to find certain assignments and never lets me turn things in it makes learning worse than it arlready is

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Reviews: Google Classroom

[4/5] Grr 😾

Okay it’s GOOD but. Why is it only 17 IOS and up what if I’m broke I want to use it on my iPad but I don’t have 17 IOS they should make it on every version you are trying to help students aren’t you. But I tried on my MacBook and I guess it helps a lot with organizing but I was hoping they add something entertains like a cute cat that gets points by the second and then you can customize it with the points or something like that would be nice and help kids improve heh.

App Store review · no public link
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Reviews: Google Classroom

[4/5] One issue from what I see

Overall, this application is good, a bit hard to get used to but still good, however I really wish that quick links could be added onto mobile since my school device is a tablet.

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Reviews: Google Classroom

[1/5] Eliminate whoever made this

I HATE GOOGLE CLASROOM AND SCHHOOLLL UGHH

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Reviews: Google Classroom

[1/5] Hate

I hate using this for school I have to do alot of it on laptop cause it doesn’t work on phone

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Reviews: Google Classroom

[1/5] Broken notifications

For over a year the push notifications have been useless. If you tap a notification alerting you that something has been posted to one of your classes, the app just opens to the landing page with all your classes: you can’t see which class has been updated, let alone what the new post was. It’s unbelievable that a workplace app made by the one of the world’s largest tech giants has such an oversight

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Reviews: Google Classroom

[1/5] rape

This app raped my cousin and i hate it

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Reviews: Google Classroom

[2/5] Mid

as a student that is required to download this app i am dissatisfied. There is many bugs and it doesn’t let me turn in assignments. also i have to download 2 more apps the google slides and the google documents which is bad because i have little storage.

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Reviews: Google Classroom

[1/5] This buns

🤮 just 🤮

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Reviews: Canvas Student

[5/5] Useful

It’s a good mobile adaptation but to this day, the ui gives me anxiety lol.

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Reviews: Canvas Student

[2/5] Buggy

This app has been acting buggy recently. Showing “34” assignments in my “to do” when I know and can see that there’s only 4. Where is it getting the other 30?! I’ve made sure it’s updated, tried closing it in the background, logging out and back in…the issue persists. It will even pop up that I have 34 notifications as well. Previously this app was great for mobile, seems we’ve not paid attention to mobile in a minute.

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Reviews: Canvas Student

[1/5] Not working!

Not sure what happened, this app used to work great! But with this new semester it doesn’t work for me anymore. Loading up the app just says “failed to load login page” “go back and make sure you enter a valid institution name” I know for a fact UCF is valid so I don’t know why I can no longer use this app on my phone.

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Reviews: Canvas Student

[1/5] No free account creation. Extremely sad.

I have ADHD and OCD. Things have to look a certain way and be directly Infront of me in one place for me to work. I didn't go to a traditional college, all my teachers are independent and have their own sites. It's hard to keep track. I'm weeks behind on so much. Then I remembered using Canvas in school. I figured I could make a teacher account, import/create my own curriculum, then sign in as a student and do the work. But there's no longer free account creation.

App Store review · no public link
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Reviews: Canvas Student

[1/5] Always offline

I don’t know if this is specific to my university but we’re constantly experiencing server outages. This is unacceptable because I can’t access my course materials or submit assignments.

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Reviews: Canvas Student

[1/5] Fix image uploads, new ui is ugly and cluttered

Fix image uploads I can’t upload more than one image

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Reviews: Duolingo

[5/5] 10/10

My best friend Marcus speaks Spanish and I’ve always been too lazy to learn it then I downloaded Duolingo and it’s hella fun, so fun (I don’t normally do in-app purchases) I got the super Duolingo subscription. Summary this is is hella fun and super awesome

App Store review · no public link
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Reviews: Duolingo

[3/5] I like the app - when it works

I enjoy the structure and gamification of the app. I find the trickle of content to be paced in a way that I enjoy. Despite the various updates to test different versions, I’ve always been interested in doing my lessons. However, the last 2 months or so the app performance has absolutely cratered. I’ve tried all the different troubleshooting methods, and issues persist. The app won’t load, except for maybe the 8th or 9th attempt. Then, even if it loads, it will crash after 1 or 2 lessons. Overall, when the app works, it is enjoyable. But good luck getting it to function.

App Store review · no public link
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Reviews: Duolingo

[5/5] Duolingo

Duolingo is awesome! And if you get super on Duolingo, you will have no ads and you get more things to do to help. You learn better and unlimited energy and you need energy to be able to do questions whenever you’re in a lesson.

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Reviews: Duolingo

[5/5] The best

I Love you Duolingo

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Reviews: Duolingo

[2/5] Not good anymore

I’ve used Duolingo since like 2017. The guilt tripping has gotten so annoying. You go one day without a lesson and they literally show you duo dying because you’re neglecting him. And every other character texting you like they’re a girlfriend or boyfriend you’re ignoring. I’m not even exaggerating. It tries to be funny but it’s just cringe and stressful. At this point it’s more of an overdone joke than a real language learning app, especially considering it doesn’t even work anyways. It’ll teach you the basics but if you want to actually be able to speak a language this app won’t help. It will just make you feel guilty.

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Reviews: Duolingo

[1/5] Banning English test

Why are you banning your English test in Iran?

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