EdTech Discovery
Hermes

An instrument for spotting the next edtech opportunity — generated ideas, each traced to the real-world signals behind it.

Updated Jun 24, 2026 · 10 ideas · 1304 signals
Admin mode — curation controls visible. Keep this URL (with token) private.

Signals

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

need
Reviews: Duolingo

[5/5] I LEARNED SO MUCH!

This app helped me learn the language of german and I used to not know a single word and now I’m a pro! I personally don’t have Duolingo plus, but I tried the free trial and was obsessed. The characters are also so neat and have rich personalities. It also encourages you with words and expressions that mean so much. If you want to learn another language, or even if you don’t, you should get this app!

App Store review · no public link
need
Reviews: Duolingo

[1/5] A money trap

App always ask for money to buy extra time & you have no control over what you learn. They attempt to use competition to draw you in.

App Store review · no public link
need
Reviews: Duolingo

[5/5] AMAZINGGGGG ⭐️⭐️⭐️⭐️⭐️❤️❤️❤️

It was such a good app, the features are amazing and it isn’t just languages but there is math, music, and even chess!! It gives you the opportunity to get a free trial of Super and lets you video call with Super!! Amazing app. Otímo!!!

App Store review · no public link
need
Reviews: Duolingo

[5/5] Wonderful App

An amazing app gor learning any language. It’s so interesting

App Store review · no public link
need
Reviews: Duolingo

[5/5] How good it is

Duolingo teach me so much that I know a lot of words like mi Necesito un taxi and yo Quito, Una agua is soo fun

App Store review · no public link
need
Reviews: Duolingo

[5/5] Loving this

This game is so great. You can learn any language you want but you do have to pay for it. Luckily, my parents are nice enough though but other than that, it’s such a great game. I recommend you try it right now. Don’t do anything else.

App Store review · no public link
need
Reviews: Duolingo

[5/5] Chess and German

Amazing for learning math chess and German

App Store review · no public link
need
Reviews: Duolingo

[3/5] I don’t feel like I’m learning

This app can be fun and interesting, but when you get answers wrong there is no explanation of why you got it wrong. Grammar exercises that explain the grammar would help a lot.

App Store review · no public link
need
Reviews: Duolingo

[4/5] Great App For Creative Learners

I love how there’s Haptic feedback & I like the pet aspect/energy aspect of it uk..makes you want to come back to keep the spirit alive😆

App Store review · no public link
need
Reviews: Duolingo

[5/5] Se que puedo

Siento que no avanzo pero no me voy a rendir pues siento mucha desesperación estar en un país y ni hablar su idioma 😕 e entendió ya algunas palabras gracias

App Store review · no public link
need
Reviews: Duolingo

[1/5] Choose your advertising partners carefully

Advertising partners promote gambling. Avoid.

App Store review · no public link
need
Reviews: Duolingo

[5/5] Very good!

I love this game I highly recommend it and I have been doing really good with my Spanish. And with my math. It even teaches me to play chess and play the piano like a pro i really love this game!!!! Please get!

App Store review · no public link
need
Reviews: Duolingo

[4/5] Sign Language??

I would like it if Duolingo could add ASL in their app. It would be really cool. But otherwise I think the app is great and a good starter for learning other languages. (Please add this😭)

App Store review · no public link
need
Reviews: Duolingo

[5/5] Why I like Duolingo

It helps us learn faster and it makes learning more fun

App Store review · no public link
need
Reviews: Duolingo

[4/5] Verb conjugations

I do really like Duo Lingo and feel I’ve learned a lot. The one thing missing for me is more consolidated verb conjugation practice. I cannot remember the verb forms the way DL hits on them. I need a chart of some kind, flash cards and drills or it doesn’t stick. Thanks

App Store review · no public link
need
Reviews: Duolingo

[5/5] Something positive to do with my phone

So much better than doom scrollimg

App Store review · no public link
need
Reviews: Duolingo

[5/5] very nice

Duolingo helps me learn a variety of different languages.

App Store review · no public link
need
Reviews: Duolingo

[4/5] Duolingo Reveiw

Duolingo is amazing. It helped gain confidence when I was talking to one of my friends from El Salvador. She taught me lots and then I learned even more with this app. I know how to have a conversation with her now! But when I don’t Duolingo for almost a day and the Duolingo devil pops up on my screen it’s a little creepy! But other wise amazing.

App Store review · no public link
need
Reviews: Duolingo

[1/5] Terrible

Ever NOT been taught something and then asked to take a test on it? That’s ALL this app is. Absolutely NO pedagogy and stupid, stupid, stupid daily goals that are tied to lessons they DONT teach you. PLUS they’ll send you like a dozen or so notifications a day and have an ad almost after EVERY function you do. Terrible. Would recommend Rosetta Stone or Babel so you can actually be TAIGHG a language.

App Store review · no public link
need
Reviews: Duolingo

[5/5] It’s the best!!!

I love love love this “game” it’s a very fun and addictive way to learn math or music and best of all another language I looooovvvve it so much and has made me soooo much better at speaking Japanese so Arigato doulingo for this amazing game!!! But I do wish there was a setting that you could turn of your streak for a little bit then come back to it because i… well let’s not get into the details but a lot of the time I go to a place where I can not use my phone to practice and loose my streak a lot and I think it would be a nice touch!!!

App Store review · no public link
need
Reviews: Duolingo

[5/5] Duolingo rating*some languages may vary*

It was good but the thing about super/max was a little time wasted but still a great app!

App Store review · no public link
need
Reviews: Duolingo

[4/5] It’s pretty good, but I have some issues

This is really good but the worst part is you need to get more energy like I’m just trying to learn

App Store review · no public link
need
Reviews: Duolingo

[5/5] How good

This is a 5 out of 5 this helps u get to learn different languages and I have learned more Spanish because of this app so that I Duolingo.

App Store review · no public link
need
Reviews: Duolingo

[5/5] GREAT!

This app has helped me so much! I use it mostly every day and having a streak to keep up with really encourages me every day to do it! But streak freezes also are. Life saver because whenever I forget to do it,it always automatically uses one for me! I love Duolingo so much!!! I definitely recommend if you are looking to learn a language!!!

App Store review · no public link
need
Reviews: Duolingo

[5/5] Thanks!

They gave me Free super for 21 days so I think it’s only right to say thanks and give it a 5 star review. Download it IDOTS!!!

App Store review · no public link
need
Reviews: Duolingo

[1/5] .

App sucks do not get.

App Store review · no public link
need
Reviews: Duolingo

[2/5] Not an actual way to learn languages

This app is kind of garbage. I’ve learned some vocabulary but not the actual language. There need to be fundamentals to build a foundation - like how to conjugate verbs, and the freaking alphabet if it doesn’t align directly with your native language. There’s nothing methodical or systematic about the “teaching” - you either figure it out for yourself or you’re screwed. And the app is glitchy. Sometimes in a lesson it’ll just decide I’m not saying a word correctly even though I am - I’ll have to yell it over and over again and sometimes it never accepts it. That’s super fun. It’s fine if you just want to learn words, but there’s no way someone is learning to speak a new language from this app.

App Store review · no public link
need
Reviews: Duolingo

[5/5] torture

getting the same questions wrong over 30 times with that annoying bird popping up every time is arguably worse than being skinned alive

App Store review · no public link
need
Reviews: Duolingo

[5/5] SO COOL !!

I LOVE DUOLINGO SO MUCH NO CAP LIKE TS FORE I CAN HAVE A FULL CONVO WITH A SPANISH MAN

App Store review · no public link
need
Reviews: Duolingo

[3/5] Badish

This app is okay for language learning but it is very buggy and can only really teach you vocabulary and if you already know some of the language l, and try to find your level but there is one little word you don’t know then the lesson will send you to a low level and you have to build back up.Also what kind of learning app has a gambling system and this many in app purchases

App Store review · no public link
need
Reviews: Duolingo

[5/5] I don’t know what to say

Thank you for teaching me music

App Store review · no public link
need
Reviews: Duolingo

[4/5] it was great!

this app is a really good app to learn new stuff and there is even math chess and music the only thing is that the ads can get very annoying but other then that its great!

App Store review · no public link
need
Reviews: Duolingo

[5/5] Awesome

It’s cute and fun and interactive

App Store review · no public link
need
Reviews: Duolingo

[4/5] Love it

It has helped me learn so much Spanish and improved my chess game but the adds do be sus and sometimes repetitive and annoying

App Store review · no public link
need
Reviews: Duolingo

[5/5] 67 girls

This app is so good.In one week I learned so many words in Spanish

App Store review · no public link
need
Reviews: Duolingo

[1/5] Great except the energy

I have had this app for only 5 days and I think it is great. The only thing I don’t like is that you have to have energy to do a lesson. I just want to learn French and worrying about energy is annoying. (Edit) This app is a lot better when you have super duolingo. I have it now and it is nice to have unlimited energy. This is a great app. The only annoying thing is I wish you could do the music lessons on an actual piano because I don’t see how tapping and holding down notes actually teaches you how to play piano. (Edit) ok so I was just doing a speaking lesson and I’ve come across this issue many times with Duolingo. A lot of times I’ll will be using Duolingo and I’ll do a speaking exercise or lesson. The way it listens is horrible and I get it wrong even when I’m saying it like the recording. It’s really irritating and I have to talk in a different tone for it to mark it correctly. Please fix this!!!! (Edit) IM SO MAD! THIS REVIEW HAS DROPPED TO ONE STAR BC OF THIS ISSUE. MATCH MADN

App Store review · no public link
need
Reviews: Duolingo

[1/5] Unauthorized charges

I already cancelled my Super subscription within my Apple subscriptions management but Duolingo is still attempting to charge me ahead of my subscription end date. This violates the TOS and shouldn’t be possible because I did not subscribe to the service outside of my Apple account. This is shady business practice. I wonder how many users they’ve done this to who haven’t noticed? Absolutely unethical!

App Store review · no public link
need
Reviews: Duolingo

[5/5] Good

Teaches me a lot of stuff I learned so much Chinese and it helped me

App Store review · no public link
need
Reviews: Duolingo

[4/5] It’s good

I haven’t seen any use of ai yet, or maybe I have but it’s been a great help with learning. Stop using ai bro, it’s a good app, just pay employees.

App Store review · no public link
need
Reviews: Duolingo

[5/5] Good

Peak

App Store review · no public link
need
Reviews: Duolingo

[5/5] Duo… obvi

We all know this app is fantastic. It genuinely helps me with my mediocre Spanish (my partner is Dominican and our children are growing up bilingual so I use it to keep up and communicate better with his family). The best is that we love chess too, so if I’m not in the mood for Spanish one night, I maintain my streak with a fun chess lesson. Mainly leaving this review to say this latest app icon that looks like a doodle is my fav of all time. Thanks for always giving me a chuckle with your ads and little in-app jokes and animations Duo team!! One of the best apps of all time… obvi

App Store review · no public link
need
Reviews: Duolingo

[1/5] Duolingo has downgraded

I genuinely hope this company sees this and learns to improve. I work an office job, and during my free time I use the PC version of Duolingo for my Japanese lessons. Upon using the ios version, there are MULTIPLE things that are not implemented in the PC version. First off, NONE of the words in my units on ios are words that I have learned on PC, which the app is claiming I have already learned. So, instead of teaching me these new words, Duolingo feeds me to the wolves and makes me guess a word I don’t know. This has left me frustrated and confused, as I feel like I’m now not making any progress on PC. Second, mic features are no longer available on PC. I’ve been a long time member (since 2014) and mic features were implemented when I first joined. They are now an ios only feature, and a fat chunk of it is behind a paywall. Third, hearts are still available on PC, but they have now introduced… a battery on ios? With each question you answer, you lose “energy” on this battery. Yep, no

App Store review · no public link
need
Reviews: Duolingo

[5/5] 5 out of 5

Duolingo really has helped me with learning new languages and has helped me be consistent with my learning. They also have music and math so you can actually learn school subjects. Duolingo is awesome!

App Store review · no public link
need
Reviews: Duolingo

[5/5] really good

it taught me a lot of Spanish

App Store review · no public link
need
Reviews: Duolingo

[1/5] Keeps getting worse

The newest version says vocabulary review. Their timed. I say the correct word and it takes five or six seconds to recognize. It just sits there and waste my time The newest has vocabulary review. They’re timed. I say the correct word and it takes five or six seconds to recognize. It just sits there and wastes my time. Sometimes I have to repeat the correct word over and over again several times to get it to be recognized. It’s awful. No way to report bugs/isuues I cringe every time there’s an update for this app because I don’t know what feature they’re going to break because they didn’t test well enough. And if you find a problem, there’s no easy way to report it or no way at all to report it. I also begin to question their linguistics. They ask you for a translation and they want you to use an English word in Italian when a perfectly good Italian word exists. Or they ask you to translate or use a word that you haven’t learned yet. How does that reinforce good language learning behav

App Store review · no public link
need
Reviews: Duolingo

[2/5] Ruined by AI

What used to be a fun language-learning game is now full of AI-generated garbage. The texts are all made with AI and the flash card “hints” are terrible— if you’re typing instead of speaking (I’m using the Spanish lessons right now) they won’t accept the female form of a noun that can be either, and a good third of the English hints can mean more than one word in Spanish, but you have no way of knowing which until you input one. I’m probably going to bow out when my membership expires this year unless they make some serious turn-arounds and start using real people to check their grammar again. I was really enjoying building my vocabulary in various languages, so I’m probably going to try another app instead.

App Store review · no public link
need
Reviews: Duolingo

[1/5] Premium access

If you don’t pay the 167$ a year there is no point of you getting this app you’ll do one lesson and run out of energy by the end of it unless u pay the premium account please download a different app if u are looking to really learn a language for free this app u can’t get thru two lessons a day without paying 167$

App Store review · no public link
need
Reviews: Duolingo

[5/5] So great

This does not only teach you languages it tell you how to play play chess piano and all sorts of different things.it has some fun challenges and event this is amazing

App Store review · no public link
need
Reviews: Duolingo

[5/5] Love Duo

Duolingo puts a smile on my face, I laugh at Duo’s prompts if I haven’t practiced on time 😂

App Store review · no public link
need
Reviews: Duolingo

[2/5] Lacking

Would love to see some customizations like focusing numbers, colors, days of the week, and months would love to be able to create flashcards. Would love to be able understand articles better. Ai helps me where you can’t.

App Store review · no public link
Showing 1–50 of 100 signals
← Prev Page 1 of 2 Next →