# multiplication drills vs 555 Timer & Oscillators Pro

The clearest difference is update cadence: 555 Timer & Oscillators Pro at every 2 months against multiplication drills's every 36 months. 555 Timer & Oscillators Pro also leads on device support (3 vs 1) and iOS requirement (17.0 vs 26.0). multiplication drills's advantage is chart position (#193 vs unranked) and price ($2.99 vs $4.99). On ads and in-app purchases there is nothing between them.

multiplication drills costs $2.99 and 555 Timer & Oscillators Pro $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

multiplication drills ships an update every 36 months, 555 Timer & Oscillators Pro every 2 months. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | multiplication drills | 555 Timer & Oscillators Pro |
| --- | --- | --- |
| Price | **$2.99** | $4.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 2 months** |
| Best chart rank | **#193** | — |
| Size | 15 MB | 22 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Sigma Sky, LLC](https://appshunter.io/developer/320947305) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### multiplication drills

[App page](https://appshunter.io/ios/app/multiplication-drills-x/id1493124874)

**Currently charting:** #193 Top Paid · Education (US App Store)

**Features:** macOS Compatibility

**In-app purchases:** none


### 555 Timer & Oscillators Pro

[App page](https://appshunter.io/ios/app/555-timer-and-oscillators-pro/id6504415162)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is multiplication drills free?

multiplication drills costs $2.99, with no in-app purchases.

### Is 555 Timer & Oscillators Pro free?

555 Timer & Oscillators Pro costs $4.99, with no in-app purchases.

### Do multiplication drills or 555 Timer & Oscillators Pro have ads?

Neither multiplication drills nor 555 Timer & Oscillators Pro shows ads.

### Which is updated more often, multiplication drills or 555 Timer & Oscillators Pro?

multiplication drills ships an update every 36 months, and 555 Timer & Oscillators Pro every 2 months. Most recently, multiplication drills was updated on October 29, 2026 and 555 Timer & Oscillators Pro 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.*