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In Memath, you do math in your head while you watch. Numbers and operators show one at a time. Each one replaces the one before it. You keep the total in your head.

1. Get Memath from the App Store or Google Play. The download is free.
2. Open the app. The first time, the “Tutorial” starts. It is one slow round with 7 + 4 − 2 × 3. Each symbol stays until you tap, and a short text explains each step.
3. Type the answer. The result shows (7 + 4 − 2) × 3 = 27. If your answer is wrong, tap Try again to play the same round again.
4. Tap Start playing. The app opens “Easy” 1, the first “Campaign” level.

After the “Tutorial”, the app opens on “Home”. Continue starts the next level to play. This is the first open level with no stars. If all open levels have stars, it is the first level with fewer than 3 stars.

Under Continue are “Campaign”, “Endless” with your best score, “My Levels” and “Warm-up”. The row at the bottom has “Stats”, Help and “Settings”.

Tip: you can skip the “Tutorial” at any time. To play it again, go to “Settings” › Replay tutorial.

Calculate in the order that you see the symbols, like a simple calculator. × and ÷ do not go first.

Example: 7 + 4 − 2 × 3

• 7 + 4 = 11
• 11 − 2 = 9
• 9 × 3 = 27

The answer is not 5. At school, you do × first: 7 + 4 − 6 = 5. In Memath, 5 is wrong.

One more example: 12 ÷ 3 + 5 × 2. First 12 ÷ 3 = 4. Then 4 + 5 = 9. Then 9 × 2 = 18.

Why the result shows brackets. Each round result shows the expression with brackets, for example (7 + 4 − 2) × 3 = 27. The brackets show the correct order. If your answer is wrong, you can see the step where you made the mistake.

Tip: keep only one number in your head. When a new symbol shows, change the total and forget the old number.

Each round has four steps. This is the same in all modes.

1. Ready. A short pause before the first symbol. In a “Campaign” level, this pause gets shorter from round 1 to round 10.
2. Displaying. Numbers and operators show one at a time. Each one replaces the one before it. Keep the total in your head.
3. Answering. The keypad shows and the timer starts. Type the result before the time ends.
4. Result. You see Correct!, Wrong or Time’s up!. You also see the expression with brackets and your answer.

The keypad and the = key. You do not have to tap =. Your speed is the time of the last digit that you type. If you stop typing, the round ends when the time ends, and the app checks what you typed. If you typed nothing, the result is Time’s up!. The − key shows only in levels where the total can go below zero.

Start automatically. Each round starts by itself. To change this, turn off “Settings” › Start automatically. Then each round waits until you tap Start.

Interruptions. Sometimes you leave the app during Ready, Displaying or Answering, for example for a phone call or Control Center. Then the round stops and you see Round interrupted. The app does not save this round. It has no effect on your stats, stars or lives. Tap Repeat to play a new expression in its place. You can also go to “Home”, and you lose nothing.

Tip: a slow tap on = does not make you slower. Type your answer and continue.

The “Campaign” has 48 levels in four tiers: “Easy”, “Medium”, “Hard” and “Expert”. Each level is a bit more difficult than the one before it. It can have more numbers, larger numbers, new operators or more speed.

Ten rounds. A level has 10 rounds. Get 6 correct answers to open the next level. The app keeps only your best result.

Correct answers	Stars
6 or 7	1 star
8 or 9	2 stars
All 10	3 stars

Open levels. In a tier, levels open one after the other. The last level of each tier is the Boss level. Beat it to open the first level of the next tier. A closed level shows “Beat the previous level first”.

Leave a level. If you leave a level before the end, the app keeps the rounds that you finished. Next time, the level continues from that point. To start again from round 1, tap Start level over on a round result.

New things. Sometimes a level brings something new, for example ÷. The first time, a short card explains it before you start.

Tip: for 3 stars, you need all 10 correct. If you have one wrong answer, finish the level anyway. A worse result never replaces your best result.

“Endless” has no levels. You play until you have no lives.

• You start with 3 lives. You lose one life for a wrong answer or when the time ends.
• After each correct answer, the next round is a bit more difficult. It can have more numbers, larger numbers, more speed or more operators. In the first rounds, the difficulty goes up after each correct answer. Later, it goes up after every second correct answer.
• Each correct answer gives 100 points. A fast answer gives up to 50 more points.
• A wrong answer or the end of the time changes nothing else. The difficulty never goes down.

Your best score shows on “Home”, on the “Endless” card. If you stop a run, the app keeps its score.

“Endless” is part of the “Unlock”. Without the “Unlock”, the “Endless” card opens the “Unlock” screen.

Tip: the extra points depend on the time that you have. A fast answer gives the same extra points at each level of difficulty.

“Warm-up” is a short practice before you play. It has 5 rounds and takes about 3 minutes. Tap “Warm-up” on “Home” to start. “Warm-up” is free.

• The first round is easy. The last two rounds use the most difficult level that you play well. This is your most difficult open “Campaign” level with 2 or more stars.
• You cannot fail. A wrong answer goes to the next round. “Warm-up” does not change your stars.
• If you leave between rounds, the warm-up stops. It does not continue later.

At the end, you see how many answers are correct and your average speed. The app compares your speed with your last warm-up. It tells you if you are faster, about the same or a bit slower.

Tip: do a warm-up before a difficult level or a Boss level.

In “My Levels”, you make your own levels. You choose the operators, the numbers and the speed. Each level that you make has 10 rounds and gives stars, like a “Campaign” level. “My Levels” is part of the “Unlock”.

Make a level

1. On “Home”, tap “My Levels”. Then tap Create level.
2. Set each field. At the bottom, the Example shows an expression with these settings and its answer.
3. Tap Save.

The fields

• Title: 1 to 40 characters. Two levels can have the same title.
• Operators: + − × ÷. Select one or more. The level must have + or ×, or − with negative totals on. A level with only ÷, or only −, is not possible.
• Number range: the smallest and the largest number, from 1 to 10,000. Move the slider, or type a number under each end. The two ends can be the same, for practice like 7 + 7 + 7.
• Number count: how many numbers show in a round, from 3 to 50.
• Speed: how fast the symbols show and how much time you have to answer. It goes from “Sloth” (slowest) to “Lightning” (fastest). For long answers, you get a bit more time to type.
• Allow negative totals: the total can go below zero, and the keypad gets a − key. This is off at first.

Sometimes no expression is possible with your settings. Then you cannot tap Save, and the form tells you why. Try a wider range or fewer numbers.

Change or delete a level. In “My Levels”, tap the edit button on the level. Make your changes and tap Save. Delete deletes the level and its stars. You cannot undo this.

Tip: for speed practice, use a small range with many numbers, for example 1–3 with 30 numbers.

“Stats” show the results of all the rounds that you finished. To open them, tap “Stats” on “Home”.

• Rounds played: all finished rounds in the “Campaign”, “My Levels”, “Endless” and “Warm-up”. The “Tutorial” and interrupted rounds do not count.
• Accuracy: the percentage of correct answers in the “Campaign” and “My Levels”. Rounds where the time ended count as wrong. “Endless” and “Warm-up” do not count here.
• Best “Endless” score: your highest score in one run.
• Current streak: the number of days in a row that you finished one or more rounds. The app uses the date on your phone. If you played today, today counts. If you miss a day, the streak starts again at 0.
• Longest streak: your longest streak.
• Accuracy by operator: the accuracy for each of + − × ÷, in the rounds that had this operator.
• Weak spot: sometimes your results are much worse in rounds with one operator. Then the app shows this operator as your weak spot. The app needs 10 or more rounds with the operator and 10 or more rounds without it. The difference must be 10 points or more.

Focus trend. Under the numbers, two charts show your accuracy and your speed for each week. The charts show the last 8 weeks. A short text compares the last 2 weeks with the 2 weeks before. The charts show after 2 weeks with 10 or more rounds each.

Tip: if you have a weak spot, make a level in “My Levels” with only that operator.

To open “Settings”, tap the gear on “Home”.

• Sound: a tick for each symbol, and a sound for a correct or wrong answer. It is on at first. When Sound is on, a slider sets the volume. Sound is off when your phone is in silent mode. Music from other apps continues to play.
• Haptics: short vibrations for each symbol and for the result. It is on at first.
• Start automatically: when it is on, each round starts by itself. When it is off, each round waits until you tap Start.
• Keypad layout: Phone has 1-2-3 in the top row. This is the default. Calculator has 7-8-9 in the top row.
• Theme: System (the default), Light or Dark.
• Language: System (the default), English, Español, Deutsch or 日本語. Read more in Language.
• Daily reminder: see below.
• Replay tutorial: plays the “Tutorial” again. It does not change your progress.
• At the bottom: Restore purchases, Reset progress, Privacy policy and About. About shows the app version and the support email.

Daily reminder. The reminder is off at first. When you turn it on, the app asks for permission to send notifications. Then tap Time and days to choose the time and the days. At first, the time is 19:00, every day. You get one notification on each day that you chose. If you already played on that day, you get no notification. The reminder never talks about your streak.

If you do not allow notifications, the reminder stays off. Under it, a button opens the system settings, where you can allow them.

Tip: if you often use a number pad on a computer, try the Calculator layout.

The Memath download is free. One purchase unlocks all other content. There are no ads and no subscriptions.

Free	With the “Unlock”
“Tutorial”	“Easy” 7–12
“Easy” 1–6	All “Medium”, “Hard” and “Expert” levels
“Warm-up”	“Endless”
“Stats”	“My Levels”
Daily reminder

Buy the “Unlock”. Tap content that is not free, for example “Easy” 7 or “Endless”. The “Unlock Memath” screen shows what you get and the price in your currency. Tap “Unlock” and confirm in the store. If you see “Purchase pending”, the “Unlock” starts when the payment is complete.

Restore the “Unlock” on a new phone. The “Unlock” is part of your store account, not of your phone. Only the “Unlock” moves to the new phone. Your progress stays on the old phone.

On iPhone or iPad:

1. Sign in with the Apple Account that you used to buy the “Unlock” (“Settings” › your name).
2. Install Memath and open it.
3. Go to “Settings” › Restore purchases.

On Android:

1. Sign in to Google Play with the Google account that you used to buy the “Unlock”.
2. Install Memath and open it.
3. Go to “Settings” › Restore purchases.

If you see “No purchase found for this account”, make sure that you use the correct account. You can also find Restore purchases on the “Unlock Memath” screen.

Tip: the “Unlock” opens the tiers, but not each level in them. You must still beat each level, and each Boss level, to continue.

Go to “Settings” › Reset progress to start again from “Easy” 1. This deletes your stars, stats and “Endless” scores. You cannot undo this.

It deletes: your stars in the “Campaign” and “My Levels”, and unfinished levels. It also deletes your round history (all your stats and your streak), your “Endless” runs, your best score and your warm-ups.

It keeps: your settings, your daily reminder, the levels that you made (without their stars) and the “Unlock”. You also do not have to do the “Tutorial” again.

After a reset, only “Easy” 1 is open. This is also true with the “Unlock”, because the “Unlock” gives access, not progress.

The app asks you one time to confirm, with a Reset button. You cannot reset only a part of your progress.

Memath is in English, Spanish, German and Japanese. The app uses the language of your phone. If your phone uses a different language, the app is in English.

In the app: go to “Settings” › Language. Select System, English, Español, Deutsch or 日本語. System uses the language of your phone.

In the phone settings:

• iPhone: “Settings” › Apps › Memath › Language.
• Android 13 and later: “Settings” › System › Languages › App languages › Memath.

The game is the same in all languages. It uses the digits 0–9 and the symbols + − × ÷.

Memath has no accounts and no ads. Your progress, stats and settings stay on your phone. They do not move to other devices, so on a new phone you start again. Only the “Unlock” can move to a new phone.

The daily reminder works on your phone. It uses no server.

The app store does the purchase. If you write to us, we see only what you send.

Read the full privacy policy.

No sound. Make sure that “Settings” › Sound is on and the volume slider is not at 0. Sound is off in silent mode, so turn off the silent switch (iPhone) or silent mode (Android). Also check the phone volume.

No haptics. Make sure that “Settings” › Haptics is on. Also make sure that vibration is on in your phone settings.

No daily reminder. Make sure that “Settings” › Daily reminder is on and that you selected today. If you played today, there is no reminder today. Also make sure that notifications for Memath are on in your phone settings.

Round interrupted. A phone call, a notification that you opened or Control Center stops the round. You see Round interrupted, and the round does not count. Tap Repeat to play a new expression in its place. If the phone closed the app during an “Endless” run, you lose that run.

A level shows “Beat the previous level first”. Levels open one at a time. Get 6 or more correct answers out of 10 in the level before it.

Something else is wrong. Write to us. Tell us:

• the app version (“Settings” › About)
• your phone model
• the iOS or Android version
• what you did, what you expected and what happened