Pricing
The same tutor on every plan. The plans differ in how often, and for how long.
In private beta. The waitlist is first in, first invited.
-
Standard
Maths stops being the thing you avoid.
A ten-minute lesson every school day, in the HD voice.
Every school day a lesson of up to 10 minutes Price announced at launch
- Recommended
Pro
Ready for the exam, not just for the test.
Standard twice a day, with twenty-minute lessons.
Two a day lessons of up to 20 minutes Price announced at launch
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Ultra
A tutor who is always there.
Unlimited lessons, and new subjects first.
Unlimited lessons of up to 20 minutes Price announced at launch
A good tutor comes once a week. Yours is there every school day.
Your lessons stay with you if you stop.
What each plan gives
| Free | Standard | Pro | Ultra | |
|---|---|---|---|---|
| Lessons | 2 a month | Every school day | Two a day | Unlimited |
| Longest lesson | 10 min | 10 min | 20 min | 20 min |
| Quick questions | 5 a month | Unlimited | Unlimited | Unlimited |
| Voice | Standard | HD | HD | HD |
| Photo of a problem | 3 a month | Unlimited | Unlimited | Unlimited |
| Replays | 7 days | Forever | Forever | Forever |
| Words and notes carried between lessons | Not included | |||
| Lessons become programs | Not included | Not included | 3 a month | Unlimited |
| Artifacts from your lessons | Not included | Not included | ||
| Exam mode | Not included | Not included | ||
| Priority when busy | Not included | Not included | Not included | |
| Parent's view, weekly report Coming | Not included | Not included | Not included | |
| Family, up to 3 learners Coming | Not included | Not included | Not included | |
| New subjects first | Not included | Not included | Not included |
What you get, compared
| Talks with you by voice | Draws it for you | Checks your thinking, not just your answer | There whenever you are | Remembers what you did last time | Price | |
|---|---|---|---|---|---|---|
| A private tutor | When booked | $40–80 an hour¹ | ||||
| A video course | One way | Recorded | Answers only | Where you stopped | A course fee | |
| A chatbot | On request | If you ask | Some do | Free or $20 a month | ||
| Ark One | From Standard | Free, then your plan |
¹ Typical rates for a private maths tutor in the US, as reported by tutoring guides from Bhanzu and Mathnasium, 2026.
Plans are bought in the Ark One app for iOS and Android.
See your plan in the appQuestions parents ask
Is it safe for my child?
The tutor is told never to ask for contact details, and its lines are checked as it speaks so anything unsuitable for a young learner is cut. Your child can flag any line as wrong or unclear, and a parent's view is coming.
Does it replace a tutor?
It is a tutor for the daily part: tonight's homework, the topic they missed, the week before a test. It does not mark coursework or stand in for their teacher.
What if they do not use it?
Cancel any time in the App Store or Google Play, and the plan runs to the end of the period you paid for. Their lessons and replays stay with them.
How is it different from a chatbot?
It talks with them, draws on a whiteboard as it explains, and checks the reasoning behind each answer. It doesn't hand over the answer. It asks them questions until they can explain it themselves.
What does “unlimited” mean?
As many lessons as one learner wants, under fair use. Sharing an account or driving it with automation is not fair use.
When are prices announced?
At launch, in the App Store and Google Play. The waitlist hears first.
Is there a free plan?
Yes. Free gives two lessons a month, enough to try a real lesson, and needs no card.
Get in while it's quiet.
Start free today. The waitlist is for the plans.