The SynAPPsium app
Flashcards that make you write the answer.
Multiple choice lets you recognize an answer. SynAPPsium asks you to produce one. Twenty subjects to grow into, one or two players, and no account to create before you start.
Free to download with nine full categories included — free forever, never a trial. A one-time Full App purchase unlocks Crosstrain, Spot a Friend and your stats, and two expansion packs add the remaining categories. Prices are shown live in the stores before you buy.
What the app looks like
What is in it
You write the answer
No multiple choice to guess your way through. Type what you remember, in your own words, and it is graded on the meaning rather than the exact letters.
20 subjects in all
Nine categories are free forever; the two expansion packs add the other eleven. History, science, geography, literature, sports and more.
Crosstrain mode
The subject changes on every question, so you cannot coast on one topic. Unlocked with The Full App.
Spot a Friend Mode
One or two players take the same set head to head and settle it on the spot. Unlocked with The Full App.
Sets your length
Ten questions by default. Make it shorter or longer to fit the time you have.
Missed questions come back
Anything you get wrong returns to the deck and comes round again another day.
Pricing, plainly
The Core Pack is free and stays free — that part never changes. The Full App is a one-time purchase that unlocks features, not categories. The two expansion packs add categories only, and they unlock in order: The Full App first, then Pack 1, then Pack 2 — a locked pack says what it needs instead of showing a buy button. Nothing is a subscription and there are no ads.
Core Pack — yours free, forever
Free
Nine full categories, permanently: U.S. States, American History, Biology, Math, English & Literature, How-To & Life Skills, Mythology & Legends, Sports & Athletics and Geography. Not a trial, no countdown — it never narrows later.
The Full App
One-time purchase
The base unlock. It adds no new categories — it unlocks the three features: Crosstrain mode, Spot a Friend Mode and the Statistics screen.
Expansion Pack 1
One-time · needs The Full App
Six new categories: World History, Chemistry, Astronomy & Planets, Arts & Music, Anatomy and Geology.
Expansion Pack 2
One-time · needs Pack 1
Five more categories: Physics, Technology & Computer Science, Psychology, World Cultures and Pop Culture — the full twenty.
We do not list dollar amounts here because prices can change and vary by country and currency — the App Store and Google Play show the definitive price before you buy. Every purchase is one-time; nothing is a subscription.
Try a set right here
Six questions, Solo or Spot a Friend. It is a small taste of the app and runs entirely in this page.
Play a set — six questions
Pick a mode
Write your answer in your own words. Everything here is graded on this page — nothing you type is sent, stored, or shared.
Get the app
Free on iOS and Android. The same privacy rules apply in the app as on this site — no accounts, no ads, no trackers.
Share this page
Tap the button to copy a link and share it with anyone you like. We never collect names, emails, or any personal information.
Privacy, plainly
No accounts, no ads, no analytics, no trackers, and no personal information collected. Your progress stays on your device.