Comparison

cardFlash vs Zeroth

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

Head to head
About

cardFlash

This free flashcard application offers two study modes: Flashcard Mode for traditional review and Adaptive Mode, which uses a smart algorithm to ensure mastery of terms. It allows for easy creation and import of study sets, including from Quizlet, and is completely ad-free.

Highlights
  • Adaptive Learn Mode
  • Flashcard Mode
  • Quizlet Import
  • 100% Ad Free
  • QR Code Set Sharing
  • Folders
Features
Read full description

No one likes paying for educational tools. Quizlet's paywalling harms thousands of students by taking away a valuable study resource. Hence, cardFlash is completely FREE! My mission with cardFlash is to provide everyone with equal access to the tools to be successful in whatever educational they pursue. A simple, clean flashcard app to help you learn what you need to learn. cardFlash will ALWAYS remain completely free and without ads (because ads suck). cardFlash makes studying for that French or Spanish test super easy! If your teacher has a set on Quizlet, you are able to quickly to import it in to cardFlash. Otherwise, you can also easily create a brand new set inside of cardFlash. Once you have your set, you can either choose to study with Flashcard Mode or Adaptive Mode. Flashcard mode allows you to go through the set just as if you had physical flashcards. Adaptive mode tests you with multiple choice and writing questions to help you learn the terms. Adaptive mode will guarantee that you know your stuff, the algorithm won't let you move past a term till you can get it right many times in a row. Adaptive mode is also super customizable, with its settings page that allows you to tweak everything about of the algorithm to best suit you. CURRENT FEATURES: - Adaptive Learn Mode - Flashcard Mode - Smart Flashcard Mode - Easily Edit Your Sets - 100% Ad Free - Quizlet Import - QR Code Set Sharing - Folders FEATURES TO COME: - Image Support - TTS Support - Online Sharing of Sets Request new features here: https://itsmichaelyu.github.io/cardFlashFeature Report bugs here: https://itsmichaelyu.github.io/cardFlashBug

About

Zeroth

Features
Read full description

Zeroth helps you become a better programmer through daily practice and gamified learning. FEATURES: - Daily programming challenges tailored to all skill levels - 5 question types: multiple choice, code output, find the bug, mix & match, drag & drop - Track your learning streak and earn achievements - Compete on global leaderboards - Offline support — practice anywhere, anytime - Beautiful dark mode interface - Detailed explanations after every question PERFECT FOR: - Students learning to code - Developers preparing for interviews - Programmers staying sharp - Bootcamp graduates practicing fundamentals Start your learning journey today!

Screenshots

cardFlash4 screens
Zeroth4 screens

Verdict

The call

The clearest difference is update cadence: Zeroth at daily against cardFlash's every 3 weeks. cardFlash's advantage is iOS requirement (11.0 vs 15.1). On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

cardFlash ships an update every 3 weeks, Zeroth daily. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.

Scorecard2 real differences · 8 level
cardFlash versus Zeroth: the parameters behind the verdict, then further details
ParametercardFlashZeroth
PriceFreeFree
Rating4.8 (25 ratings) — better—
Positive reviews94.1% of reviews—
Number of ratings25 — better—
Update frequencyEvery 3 weeksDaily — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS11.0 — better15.1
Further details — not scored
Size35 MB31 MB
Age rating4+4+
DeveloperMichael YuMukhammadnozim Islamov

In-app purchases

None

cardFlash

No in-app purchases

None

Zeroth

No in-app purchases

Questions

Is cardFlash free?
cardFlash is free to download, with no in-app purchases.
Is Zeroth free?
Zeroth is free to download, with no in-app purchases.
Do cardFlash or Zeroth have ads?
Neither cardFlash nor Zeroth shows ads.
Which is updated more often, cardFlash or Zeroth?
cardFlash ships an update every 3 weeks, and Zeroth daily. Most recently, cardFlash was updated on October 16, 2026 and Zeroth on October 9, 2026.

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