# Unlimited Math Problems vs ReadBay

The clearest difference is price: ReadBay at Free against Unlimited Math Problems's $5.99. ReadBay also leads on review sentiment (85% vs 64%) and rating (4.8 vs 4.5). Unlimited Math Problems's advantage is in-app purchases (none vs 4). On ads and device support there is nothing between them.

ReadBay is free to download; Unlimited Math Problems costs $5.99 up front. ReadBay sells 4 in-app purchases, starting at $4.99 per month. Unlimited Math Problems asks for nothing beyond the download.

ReadBay holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 53 and 239 respectively. Written reviews point the same way: 64% of Unlimited Math Problems's written reviews are positive against 85% of ReadBay's.

Unlimited Math Problems ships an update every 3 weeks, ReadBay every 10 days. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Unlimited Math Problems | ReadBay |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [4.5 (53 ratings)](https://appshunter.io/ios/app/unlimited-math-problems/id1244547440/reviews) | **[4.8 (239 ratings)](https://appshunter.io/ios/app/readbay-book-summaries/id6499073338/reviews)** |
| Number of ratings | 53 | **239** |
| Positive reviews | 64.3% of reviews | **84.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 17 MB | 60 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Madiyar Aitbayev](https://appshunter.io/developer/1229466587) | [Bange Sabastine Hwonyi](https://appshunter.io/developer/1708740698) |

## What reviewers say

### Unlimited Math Problems

[App page](https://appshunter.io/ios/app/unlimited-math-problems/id1244547440)

Master your math skills with an app that generates an endless supply of practice problems. It offers various interaction types and covers multiple math subjects, suitable for all skill levels.

**Highlights:** Infinite problem generation, Keyboard, multiple choice, true/false inputs, Varied problem types per subject, Covers early math, arithmetic, fractions, number theory, decimals, trigonometry, Suitable for beginners and experienced users

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

**In-app purchases:** none


### ReadBay

[App page](https://appshunter.io/ios/app/readbay-book-summaries/id6499073338)

Access concise summaries and audio versions of bestselling books in under 15 minutes. Master key insights from business, self-help, and personal development titles for faster learning and habit building.

**Highlights:** 15-minute book summaries, Audiobook summaries, Offline reading, Progress tracking, Habit building challenges, Bookmark favorite notes

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro Membership | $4.99 | per month |
| Pro Annual Membership | $19.99 | per year |
| Yearly Pro Membership | $24.99 | per year |
| Lifetime Membership | $39.99 | one-time |

**What reviewers like**

- 🚀 Informative and easy to follow
- 👍 Smooth listening experience
- 👍 Broad library of titles
- 👍 Allows reading or listening
- 👍 User-friendly interface

**What reviewers complain about**

- 🐛 Usability issues when multitasking
- 🐛 Audiobook restarts from beginning
- 🔒 Lack of transparency (broken links, no contact info)
- 👎 Limited book recommendations
- 👎 Needs more book options and larger selection

**Reported bugs**

- Purchased lifetime subscription not accessible on new device
- Identical summaries for different books

**Requested features**

- Support for French books
- Ability to share summaries to Kindle
- More language options (e.g., Chinese)


## Frequently asked questions

### Is Unlimited Math Problems free?

Unlimited Math Problems costs $5.99, with no in-app purchases.

### Is ReadBay free?

ReadBay is free to download, with in-app purchases available.

### Which has better reviews, Unlimited Math Problems or ReadBay?

ReadBay is rated higher. Unlimited Math Problems averages 4.5 out of 5 from 53 ratings, while ReadBay averages 4.8 from 239 ratings.

### Do Unlimited Math Problems or ReadBay have ads?

Neither Unlimited Math Problems nor ReadBay shows ads.

### Which is updated more often, Unlimited Math Problems or ReadBay?

Unlimited Math Problems ships an update every 3 weeks, and ReadBay every 10 days. Most recently, Unlimited Math Problems was updated on October 24, 2026 and ReadBay on October 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.*