DOAPhotomath vs Gauth: which one to choose?
We compare Photomath and Gauth on price, devices, difficulty and who each one suits, using the data on their DOA pages.
Photomath
Snap a photo of a maths problem and it solves it step by step, explaining each step. Owned by Google, it covers primary school up to calculus.
Gauth
ByteDance app that solves homework from a photo: maths, physics, chemistry and more, with a step-by-step explanation.
DOA verdict for study
Photomath wins, but only just
87.3 Photomath · 85.4 Gauth / 100
Students who want to understand maths homework. Very easy: point and go.
Why
- DOA score in study · Photomath: 94/100 vs 90/100
- Free version · Photomath: 88/100 vs 82/100
- Ease of use: tie
- Devices · Gauth: 3 vs 2
Pick Gauth if…
Secondary and high-school students. Covers more than maths.
How we decide: this verdict uses a formula of its own for comparisons, different from the DOA score: DOA score in study (60%), free version (20%), ease of use (10%) and devices (10%). Data from each tool page, reviewed on 15 October 2026. How we calculate the DOA score and the verdict
| Photomath | Gauth | |
|---|---|---|
| Price | Freemium Basic is free with step-by-step explanations. Plus $9.99 a month or $69.99 a year, with a trial. | Freemium Free with daily limits. Paid Gauth Plus for more answers and tutor help. |
| Devices | Android · iPhone / iPad | Browser · Android · iPhone / iPad |
| Level | Easy | Easy |
| What it is for | Study | Study |
| DOA score | 80/100 | 79/100 |
| Key features |
|
|
| Pros |
|
|
| Cons |
|
|
On the overall DOA score, Photomath gets 80/100 and Gauth 79/100. It is an indicative rating: try both on a real task before you pay.
Photomath is a better fit for
- Students who want to understand maths homework
Gauth is a better fit for
- Secondary and high-school students