Comparison

Stacks vs JamDaiThai

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

Head to head
About

Stacks

Create flashcards from your own experiences and conversations. This app uses spaced repetition to help you remember vocabulary longer with less study. It supports over 100 languages and offers offline study capabilities.

Highlights
  • Create cards from stories and conversations
  • Spaced repetition system (FSRS)
  • Offline study mode
  • Automatic translations
  • Supports over 100 languages
  • Romanization for select scripts
  • Clean, minimal interface
Features
Read full description

Your stories are better. Life's too short to cram from borrowed lists. Stacks turns trips and conversations into cards, then spaced-repetition (FSRS) handles the science. Episodic memory meets spaced repetition. Dream team. Benefits: • Keep momentum anywhere – Study offline on flights, trains, or dead zones. • Stay in sync across devices – Your progress follows you automatically. • Focus without distractions – No ads, just learning. • Create cards in seconds – Automatic translations speed up card creation. • Learn with clearer meanings – Premium DeepL translations offer high accuracy and context. • Remember longer with less study – FSRS schedules reviews at the right time. • Learn the language you care about – Supports over 100 languages. • Crack non-Latin scripts faster – Romanization for select languages like Japanese, Arabic, Russian, and Hindi. • Feel calm while you study – A clean, minimal interface that gets out of the way. Free and Plus Create up to 40 cards for free. Upgrade to Stacks Plus for unlimited cards, DeepL translations, spaced repetition customisation, and more. Perfect for language learners, students, and polyglots who want to study offline, master vocabulary, and remember more with flashcards. Privacy Policy: https://www.thestacksapp.com/privacy Terms of Service: https://www.thestacksapp.com/terms-of-service EUSA: https://www.apple.com/legal/internet-services/itunes/dev/minterms/

About

JamDaiThai

Features
Read full description

Learn Thai vocabulary that actually sticks. Jam Dai Thai is a focused Thai learning app built around short lessons, guided script training, tone practice, and smart spaced repetition. Start from zero and build useful vocabulary, reading, and listening skills one clear step at a time. LEARN WITH CONTEXT • Study practical Thai words and expressions • Hear pronunciation and see clear English meanings • Use memorable explanations and mnemonics • Learn Thai script at your own pace MASTER SCRIPT AND TONES • Learn consonants, vowels, classes, and tone rules • Train your ear across all five Thai tones • Practice with real Thai words • Switch between modern and classic Thai fonts REMEMBER WHAT YOU LEARN • Reviews return when your memory needs them • Correct answers move words toward mastery • Difficult items come back sooner • Review forecasts show what is coming next FOLLOW A CLEAR PATH • Progress through structured vocabulary levels • Build the Thai writing system step by step • Track mastery across lessons and reviews • Explore script and tone training alongside vocabulary Start with Thai script training and the first 3 vocabulary levels, including 150+ words, for free. Optional subscriptions and lifetime access unlock level 4+ lessons and reviews. Whether you are learning for travel, relationships, living in Thailand, or curiosity, Jam Dai Thai helps you turn a few focused minutes into lasting Thai skills. Terms of Service: https://www.jamdaithai.com/terms Privacy Policy: https://www.jamdaithai.com/privacy

Screenshots

Stacks4 screens
JamDaiThai4 screens

Verdict

The call

Stacks and JamDaiThai are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Stacks sells 2 in-app purchases, starting at $9.99 per 3 months and JamDaiThai sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Stacks versus JamDaiThai: the parameters behind the verdict, then further details
ParameterStacksJamDaiThai
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyEvery 3 months—
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.4 — better17.0
Further details — not scored
Size77 MB21 MB
Age rating4+4+
DeveloperLewis HoyStefan Vladislav Edelman

In-app purchases

2 purchases

Stacks

Subscriptions2
  • Stacks+ Quarterly$9.993 Months
  • Stacks+ Yearly$27.991 Year
3 purchases

JamDaiThai

Subscriptions2
  • Jam Dai Thai Premium Monthly$6.991 Month
  • Jam Dai Thai Premium Annual$64.991 Year
One-time1
  • Jam Dai Thai Premium Lifetime$164.99

Questions

Is Stacks free?
Stacks is free to download, with in-app purchases available.
Is JamDaiThai free?
JamDaiThai is free to download, with in-app purchases available.
Do Stacks or JamDaiThai have ads?
Neither Stacks nor JamDaiThai shows ads.

Other comparisons