# ThinkBack vs Fraction Calculator₊

The clearest difference is update cadence: ThinkBack at every 3 days against Fraction Calculator₊'s every 6 weeks. ThinkBack also leads on iOS requirement (13.0 vs 17). Fraction Calculator₊'s advantage is monetization model (free vs free with in-app purchases) and ratings volume (17 vs 3). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. ThinkBack sells 2 in-app purchases, starting at $1.49 per month and Fraction Calculator₊ sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for ThinkBack against 5.0 for Fraction Calculator₊. That said, the two scores are not equally well evidenced: Fraction Calculator₊ has 17 ratings behind it against 3, so its average is the more settled of the two.

ThinkBack ships an update every 3 days, Fraction Calculator₊ every 6 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | ThinkBack | Fraction Calculator₊ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/thinkback/id1541030401/reviews) | [5.0 (17 ratings)](https://appshunter.io/ios/app/fraction-calculator/id6745460607/reviews) |
| Number of ratings | 3 | **17** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 61 MB | 2 MB |
| Requires iOS | **13.0** | 17 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sam Storino](https://appshunter.io/developer/1457262269) | [Draunt LLC](https://appshunter.io/developer/1067629917) |

## What reviewers say

### ThinkBack

[App page](https://appshunter.io/ios/app/thinkback/id1541030401)

This app helps you commit information to long-term memory through spaced repetition. It prompts you daily to review notes, organize them with hashtags, and offers private iCloud syncing. Upgrade for enhanced functionality.

**Highlights:** Spaced repetition for memory building, Daily review prompts, Note organization with hashtags, Private iCloud syncing, Search and filter notes, Mark notes as memorized

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.49 | per month |
| Yearly | $14.99 | per year |


### Fraction Calculator₊

[App page](https://appshunter.io/ios/app/fraction-calculator/id6745460607)

Easily add, subtract, multiply, and divide fractions with instant, step-by-step solutions. This app simplifies complex fraction problems for homework, teaching, or everyday use, offering tools to convert, simplify, and reduce fractions.

**Highlights:** Add, Subtract, Multiply & Divide Fractions, Mixed Number & Improper Fraction Support, Step-by-Step Solutions, Fraction Simplifier & Reducer, Decimal Equivalent Display, Dark Mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fraction Calculator Pro | $2.99 | one-time |


## Frequently asked questions

### Is ThinkBack free?

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

### Is Fraction Calculator₊ free?

Fraction Calculator₊ is free to download, with in-app purchases available.

### Which has better reviews, ThinkBack or Fraction Calculator₊?

ThinkBack and Fraction Calculator₊ are both rated 5.0 out of 5 on the App Store, from 3 and 17 ratings respectively.

### Do ThinkBack or Fraction Calculator₊ have ads?

Neither ThinkBack nor Fraction Calculator₊ shows ads.

### Which is updated more often, ThinkBack or Fraction Calculator₊?

ThinkBack ships an update every 3 days, and Fraction Calculator₊ every 6 weeks. Most recently, ThinkBack was updated on November 3, 2026 and Fraction Calculator₊ on November 5, 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.*