# Add Up Fast vs RubikTime

The clearest difference is in-app purchases: RubikTime at none against Add Up Fast's 3. RubikTime also leads on update cadence (every 4 months vs every 38 months). Add Up Fast's advantage is ads (none vs shown) and iOS requirement (9.0 vs 16.4). On price and device support there is nothing between them.

Both are free to download. Add Up Fast sells 3 one-off in-app purchases. RubikTime asks for nothing beyond the download.

Add Up Fast ships an update every 38 months, RubikTime every 4 months. The most recent releases landed on October 22, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Add Up Fast | RubikTime |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (75 ratings)](https://appshunter.io/ios/app/add-up-fast-multiplication/id1028942265/reviews)** | — |
| Number of ratings | **75** | — |
| Positive reviews | 58.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 38 months | **Every 4 months** |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 114 MB |
| Requires iOS | **9.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Arch Square](https://appshunter.io/developer/432278777) | [Dawid Wrzesinski](https://appshunter.io/developer/1812701337) |

## What reviewers say

### Add Up Fast

[App page](https://appshunter.io/ios/app/add-up-fast-multiplication/id1028942265)

Test your mental math skills with quick, 15-second challenges. Tap the correct answer to progressively harder equations to boost your brain power. Features four distinct game modes for varied practice.

**Highlights:** 15-second speed challenges, Tap correct answer mechanic, Progressively harder questions, Addition mode, Subtraction mode, Multiplication mode, Division mode

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pack of 250 Tokens | $0.99 | one-time |
| Pack to Unlock All Game Modes | $1.99 | one-time |
| Pack to Remove Ads | $1.99 | one-time |


### RubikTime

[App page](https://appshunter.io/ios/app/rubiktime/id6746074410)

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

**In-app purchases:** none


## Frequently asked questions

### Is Add Up Fast free?

Add Up Fast is free to download, with in-app purchases available.

### Is RubikTime free?

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

### Do Add Up Fast or RubikTime have ads?

RubikTime shows ads; Add Up Fast does not.

### Which is updated more often, Add Up Fast or RubikTime?

Add Up Fast ships an update every 38 months, and RubikTime every 4 months. Most recently, Add Up Fast was updated on October 22, 2026 and RubikTime on October 25, 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.*