# ProblemSum vs digital PSAT math

The clearest difference is iOS requirement: digital PSAT math at 12.0 against ProblemSum's 18.0. On price, review sentiment, update cadence and ads there is nothing between them.

ProblemSum costs $6.99 and digital PSAT math $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ProblemSum ships an update every 3 weeks, digital PSAT math fortnightly. Both last shipped on November 3, 2026.

## The numbers

| Metric | ProblemSum | digital PSAT math |
| --- | --- | --- |
| Price | $6.99 | $6.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/problemsum/id1273718042/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Paid | Paid |
| Size | 3 MB | 182 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Aeterna Solutions](https://appshunter.io/developer/1273718041) | [IOANNIS LABADAS](https://appshunter.io/developer/1495723936) |

## What reviewers say

### ProblemSum

[App page](https://appshunter.io/ios/app/problemsum/id1273718042)

This app provides an unlimited supply of Singapore-style math word problems, with step-by-step solutions. It's designed for children aged 10-13 seeking a challenge and covers a wide range of advanced math topics. The app offers a digital scratchpad for working out problems without a calculator.

**Highlights:** Unlimited word problems, Step-by-step solutions, Digital scratchpad, No calculator required, Singapore math methodology, Covers fractions, ratios, algebra, and more

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases:** none


### digital PSAT math

[App page](https://appshunter.io/ios/app/digital-psat-math/id1495723937)

Prepare for the digital PSAT math section with over 365 unique exercises and practice tests. Features include worked-out solutions, grid-in format practice, and customizable tests to improve your math scores.

**Highlights:** 365 practice exercises, Worked-out solutions, Grid-in format practice, Customizable test creation, Progress tracking, Printable tests and scores

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ProblemSum free?

ProblemSum costs $6.99, with no in-app purchases.

### Is digital PSAT math free?

digital PSAT math costs $6.99, with no in-app purchases.

### Do ProblemSum or digital PSAT math have ads?

Neither ProblemSum nor digital PSAT math shows ads.

### Which is updated more often, ProblemSum or digital PSAT math?

ProblemSum ships an update every 3 weeks, and digital PSAT math fortnightly. Most recently, ProblemSum was updated on November 3, 2026 and digital PSAT math on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*