# ClassTimer vs ProblemSum

The clearest difference is review sentiment: ProblemSum at 100% against ClassTimer's 0%. ProblemSum also leads on rating (5.0 vs 2.0) and update cadence (every 5 weeks vs every 14 months). ClassTimer's advantage is price ($1.99 vs $2.99) and iOS requirement (12.0 vs 18.0). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

ClassTimer costs $1.99 and ProblemSum $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ProblemSum holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 0% of ClassTimer's written reviews are positive against 100% of ProblemSum's.

ClassTimer ships an update every 14 months, ProblemSum every 5 weeks. The most recent releases landed on June 25, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | ClassTimer | ProblemSum |
| --- | --- | --- |
| Price | **$1.99** | $2.99 |
| Rating | [2.0 (2 ratings)](https://appshunter.io/ios/app/classtimer/id493088052/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/problemsum/id1273718042/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 5 weeks** |
| Monetization | Paid | Paid |
| Size | 19 MB | 2 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPad, Mac, Apple TV | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Aeterna Solutions](https://appshunter.io/developer/1273718041) |

## What reviewers say

### ClassTimer

[App page](https://appshunter.io/ios/app/classtimer/id493088052)

This app helps students develop essential time management skills with visual timers and customizable alerts. It supports various display formats and sounds to aid understanding and productivity in educational settings.

**Highlights:** Visual time display, Bar graph indicator for remaining time, Selectable buzzer sounds, Hours/minutes or minutes/seconds display, Start, stop, pause, and restart functions, Sound on/off control

**In-app purchases:** none


### ProblemSum

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

Practice math word problems aligned with the Singapore Mathematics syllabus for Primary 6 students. Get detailed solutions for each problem. The app works offline and requires no account.

**Highlights:** Random math word problem generation, Singapore Math syllabus alignment, Detailed step-by-step solutions, Offline functionality, No account required, Ad-free experience

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ClassTimer free?

ClassTimer costs $1.99, with no in-app purchases.

### Is ProblemSum free?

ProblemSum costs $2.99, with no in-app purchases.

### Which has better reviews, ClassTimer or ProblemSum?

ProblemSum is rated higher. ClassTimer averages 2.0 out of 5 from 2 ratings, while ProblemSum averages 5.0 from 1 ratings.

### Do ClassTimer or ProblemSum have ads?

Neither ClassTimer nor ProblemSum shows ads.

### Which is updated more often, ClassTimer or ProblemSum?

ClassTimer ships an update every 14 months, and ProblemSum every 5 weeks. Most recently, ClassTimer was updated on June 25, 2026 and ProblemSum on September 23, 2026.

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