# ProblemSum vs AbcTots

The clearest difference is price: AbcTots at Free against ProblemSum's $6.99. AbcTots also leads on update cadence (every 10 days vs every 3 weeks) and iOS requirement (12.0 vs 18.0). ProblemSum's advantage is rating (5.0 vs 3.0). On ratings volume, ads, in-app purchases and device support there is nothing between them.

AbcTots is free to download; ProblemSum costs $6.99 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 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

ProblemSum ships an update every 3 weeks, AbcTots every 10 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | ProblemSum | AbcTots |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/problemsum/id1273718042/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/abctots/id6504202830/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Paid | **Free** |
| Size | 3 MB | 172 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) | [geageac marius marian](https://appshunter.io/developer/1375290803) |

## 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


### AbcTots

[App page](https://appshunter.io/ios/app/abctots/id6504202830)

This app offers an interactive and fun way for preschoolers to learn essential early skills. Children can practice writing letters, numbers, shapes, and names of common objects in a safe, engaging environment. It focuses on developing fine motor skills and early recognition through playful activities.

**Highlights:** Letter and number writing practice, Shape and object drawing, Animal, vegetable, and fruit name learning, Fine motor skill development, Interactive and motivating gameplay, No login required for immediate play

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ProblemSum free?

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

### Is AbcTots free?

AbcTots is free to download, with no in-app purchases.

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

ProblemSum is rated higher. ProblemSum averages 5.0 out of 5 from 1 ratings, while AbcTots averages 3.0 from 1 ratings.

### Do ProblemSum or AbcTots have ads?

Neither ProblemSum nor AbcTots shows ads.

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

ProblemSum ships an update every 3 weeks, and AbcTots every 10 days. Most recently, ProblemSum was updated on November 3, 2026 and AbcTots on October 30, 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.*