# TrueNerd > A math and science tutor for iPad that reads your handwriting, points to the mistake and helps you find the next step yourself. Grade 8 through college, in 16 languages. Coming soon to the App Store. ## Get past the step that stopped you. Solve math and science by hand on iPad. When you're stuck, your tutor shows which step to check and asks the question that gets you going again. Grade 8 through college · 16 languages · Live voice Coming soon to the App Store · For iPad ## How a lesson works It works like paper, with a tutor beside you. 1. **Write on the page.** Write with Apple Pencil. Type the problem or take a photo of it. 2. **Pause.** Stop for a moment and the tutor reads your whole page, diagrams included. 3. **Fix the underlined step.** The tutor underlines the step to check, asks a question and tells you when you're right. ## Watch a lesson A scripted student makes one mistake. The tutor's replies are real and unedited. ### Algebra Quadratic with a parameter. The student factors correctly but chooses the interval on the wrong side of the roots. **The problem:** For which values of k does x² − kx + k + 3 = 0 have two distinct real roots? - The student writes on the page. - The tutor underlines a step in red. - **Tutor, out loud:** “Your factorization is correct, but check the signs in your final interval.” - **Tutor, in writing** (Typst): `Your factorization gives $(k - 6)(k + 2) > 0$. Test a value in your proposed interval: is the product positive?` - The student corrects their work. - **Student, out loud:** “Oh. I tried k = 0 and got minus twelve, and that's not bigger than zero. So the answer is the outside part, not the middle?” - **Tutor, out loud:** “Yes, the outside intervals are correct. Your revised answer excludes the endpoints, as it should.” - **Tutor, in writing** (Typst): `Correct: $k in (-infinity, -2) union (6, infinity)$.` - The tutor confirms the solution is complete. ### Geometry Intersecting chords. The student multiplies by a whole chord instead of one of its two segments. **The problem:** Chords AB and CD of a circle intersect at P. AP = 4, PB = 9 and CD = 15. Find CP and PD. - The student writes on the page. - The tutor underlines a step in red. - **Tutor, out loud:** “Check which two lengths the intersecting-chords theorem multiplies. The full chord is not one of those two segments.” - **Tutor, in writing** (Typst): `For intersecting chords, multiply the two *segments* of each chord. Here #mi(ˋCDˋ) is the whole chord, not one of its segments.` - The student corrects their work. - **Student, out loud:** “Oh, so it's the two pieces of CD on either side of P, not the whole chord. Then I need a quadratic.” - **Tutor, out loud:** “Yes, you corrected the chord relationship, and your quadratic and factoring are right. What does your other root mean for the two labeled lengths?” - **Tutor, in writing** (Typst): `Your corrected relationship and factorization are right. What does the other root mean for the labeled lengths?` - The student corrects their work. - **Student, out loud:** “Right, P could just as well be closer to D. So CP = 12 and PD = 3 works too.” - **Tutor, out loud:** “Exactly. Both assignments work, and the given lengths don't distinguish between them.” - **Tutor, in writing** (Typst): `Correct: both assignments are possible.` - The tutor confirms the solution is complete. ### Calculus Integration by parts. The student drops a factor of ½, then asks out loud why the line is wrong. **The problem:** Evaluate ∫ x·e^(2x) dx. - The student writes on the page. - The tutor underlines a step in red. - **Tutor, out loud:** “Your integration by parts setup is right. Check the coefficient in the last term by differentiating it.” - **Tutor, in writing** (Typst): `Recall: $dif/(dif x) e^(2x) = 2e^(2x)$. Check the coefficient in the last term by differentiating it.` - **Student, out loud:** “Why is the last line wrong? Isn't the integral of e to the 2x just e to the 2x?” - The tutor underlines a step in red. - **Tutor, out loud:** “Not quite: the chain rule introduces an extra factor when you differentiate the exponential. Your earlier value for the antiderivative already accounts for that; use it to reconsider the last term.” - **Tutor, in writing** (Typst): `The chain rule gives $dif/(dif x) e^(3x) = 3e^(3x)$, so $integral e^(3x) dif x = 1/3 e^(3x) + C$. Compare this with the value of $v$ you found. How does that affect the last term?` - The student corrects their work. - **Tutor, out loud:** “Yes, that correction is right. Your final antiderivative is correct.” - **Tutor, in writing** (Typst): `The corrected final answer is right.` - The tutor confirms the solution is complete. ### Physics Block on an incline with friction. The student swaps sine and cosine when calculating the normal force. **The problem:** A 2.0 kg block slides down a 30° incline. The coefficient of kinetic friction is 0.20. Find the block's acceleration. Use g = 9.8 m/s². - The student writes on the page. - The tutor underlines a step in red. - **Tutor, out loud:** “Your force directions look good, but check which component of weight is perpendicular to the incline. That affects the friction and acceleration too.” - **Tutor, in writing** (Typst): `The normal force balances the component of weight *perpendicular* to the incline. Which component is that for a $30^degree$ incline?` - The student corrects their work. - **Student, out loud:** “Right, the normal force only balances the part of gravity that pushes into the ramp. That's the cosine part, so I redid it.” - **Tutor, out loud:** “Yes, your corrected normal force and friction are right, and your acceleration is correct down the incline.” - **Tutor, in writing** (Typst): `Correct: $a approx 3.2 "m/s"^2$ down the incline.` - The tutor confirms the solution is complete. ### Chemistry Limiting reactant. The student calculates how much water forms using the excess reactant. **The problem:** 10.0 g of hydrogen gas reacts with 64.0 g of oxygen gas. What mass of water forms? - The student writes on the page. - The tutor underlines a step in red. - **Tutor, out loud:** “Your mole conversions are correct. Check whether both reactants are available in the proportions needed before using all the hydrogen.” - **Tutor, in writing** (Typst): `The equation requires $2$ mol of hydrogen for every $1$ mol of oxygen. You have $4.96$ mol of hydrogen and $2.00$ mol of oxygen. Which reactant limits the water formed?` - The student corrects their work. - **Student, out loud:** “Wait, the oxygen runs out first. 4.96 moles of hydrogen would need 2.48 moles of oxygen, and I only have 2.” - **Tutor, out loud:** “Exactly. Oxygen is limiting, and your corrected water mass is right.” - **Tutor, in writing** (Typst): `Correct: oxygen is the limiting reactant, and the mass of water formed is $72.1 "g"$.` - The tutor confirms the solution is complete. ## Talk it through Tap Live and talk to your tutor while you write. - **Ask while you write.** No typing and no buttons. - **Ask about what's on your page.** “Why is that wrong?” is enough. The tutor sees your page. - **Think out loud.** Explain your steps and the tutor hears where your reasoning slipped. - **Hear the gist, read the details.** The tutor keeps it short out loud and writes the math beside your page. - **Interrupt any time.** Cut in, change your mind or ask it to slow down. - **Work out the next step yourself.** Ask for the answer and you get a question that helps you find it. The microphone is on only during Live, and voices are never recorded. ## Everything paper does, plus a tutor - **Photograph a problem.** Snap a problem from a textbook or worksheet and start working on it. - **Learn in 16 languages.** The tutor speaks and writes in your language. - **Write, draw and move your work.** A fountain pen, a ruler for diagrams and a lasso to move your work around. - **Keep your work private.** No sign-in, no ads and no tracking. Lessons stay on your iPad. ## Math, physics and chemistry From grade 8 through college, including the multi-step problems with diagrams and units. - Math: Algebra - Math: Geometry - Math: Trigonometry - Math: Calculus - Math: Linear algebra - Math: Differential equations - Physics: Mechanics - Physics: Electric circuits - Physics: Optics - Chemistry: Chemical reactions - Chemistry: Molecules and bonds - Chemistry: Equilibrium and pH ## For parents TrueNerd helps your child work problems out on their own. - **Questions instead of answers.** The tutor points to the mistake and asks questions, so your child does the thinking. - **For ages 13 and up.** Where required, you approve the app and its purchases through Apple. - **No ads, tracking or chat.** Nothing competes for your child's attention, and no one else can reach them. - **Lessons stay private.** Lessons stay on the iPad, are never used to train AI and can be deleted any time in Settings. ## Questions ### When can I get TrueNerd? Soon, on the App Store for iPad. We'll link to it here on launch day. ### Which devices does it work on? iPad with iPadOS 27 or later. Apple Pencil works best; a finger works too. ### Will it just give me the answers? No. It points to the mistake and asks questions until you find the answer yourself. ### How much does it cost? A monthly subscription with a free trial, through your Apple Account. ### Do I need to create an account? No. Open TrueNerd and start. ### Which languages does the tutor speak? The tutor writes and speaks in Deutsch, English, Español, Français, Italiano, Nederlands, Polski, Português (Brasil), Türkçe, Русский, Українська, العربية, हिन्दी, 日本語, 简体中文, 한국어. ### Can the tutor make mistakes? Yes, sometimes. Check important results. ### What happens to my work? It stays on your iPad and is never used to train AI. ### Is there a version for iPhone or Mac? No. TrueNerd is made for iPad and Apple Pencil. ## Legal - [Terms of Use](https://truenerd.app/terms) - [Privacy Policy](https://truenerd.app/privacy) - [AI Notice](https://truenerd.app/ai-notice) - [Information for Parents](https://truenerd.app/parents) - [Get Help](https://truenerd.app/help) Contact: hello@truenerd.app · © 2026 Datacomb Solutions Inc.