# R2R vs SST IB Maths

The clearest difference is in-app purchases: SST IB Maths at none against R2R's 1. SST IB Maths also leads on update cadence (every 3 weeks vs every 3 months). R2R's advantage is iOS requirement (10.3 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. R2R sells 1 one-off in-app purchase. SST IB Maths asks for nothing beyond the download.

R2R ships an update every 3 months, SST IB Maths every 3 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | R2R | SST IB Maths |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/r2r-advanced-chemistry/id1268437563/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 151 MB | 29 MB |
| Requires iOS | **10.3** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [James Styles](https://appshunter.io/developer/1537953716) | [Kikodo](https://appshunter.io/developer/1647993863) |

## What reviewers say

### R2R

[App page](https://appshunter.io/ios/app/r2r-advanced-chemistry/id1268437563)

This educational app helps students revise chemistry topics by asking targeted questions. It identifies weak areas and allows for random or topic-specific practice. An optional upgrade provides over 500 additional questions.

**Highlights:** Targeted chemistry questions, Identifies weak revision topics, Random and topic-specific practice, Exam board tailoring, Optional extra question packs

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extra Questions Pack | $0.99 | one-time |


### SST IB Maths

[App page](https://appshunter.io/ios/app/sst-ib-maths/id6444309821)

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

**In-app purchases:** none


## Frequently asked questions

### Is R2R free?

R2R is free to download, with in-app purchases available.

### Is SST IB Maths free?

SST IB Maths is free to download, with no in-app purchases.

### Do R2R or SST IB Maths have ads?

Neither R2R nor SST IB Maths shows ads.

### Which is updated more often, R2R or SST IB Maths?

R2R ships an update every 3 months, and SST IB Maths every 3 weeks. Most recently, R2R was updated on November 3, 2026 and SST IB Maths 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.*