# Ratio Calculator vs Sync

The clearest difference is price: Sync at Free against Ratio Calculator's $4.99. Sync also leads on update cadence (every 9 days vs every 35 months). Ratio Calculator's advantage is in-app purchases (none vs 4) and iOS requirement (12.0 vs 15.6). On ads and device support there is nothing between them.

Sync is free to download; Ratio Calculator costs $4.99 up front. Sync sells 4 one-off in-app purchases. Ratio Calculator asks for nothing beyond the download.

Ratio Calculator ships an update every 35 months, Sync every 9 days. The most recent releases landed on September 10, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Ratio Calculator | Sync |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 35 months | **Every 9 days** |
| Size | 28 MB | 4 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) | [Sync-it.co.uk](https://appshunter.io/developer/1878336212) |

## What reviewers say

### Ratio Calculator

[App page](https://appshunter.io/ios/app/ratio-calculator-proportion/id1522863550)

**In-app purchases:** none


### Sync

[App page](https://appshunter.io/ios/app/sync-it-plus/id6759370758)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hardware Unlock | Free | one-time |
| Sync-It 14 Day Trial | Free | one-time |
| Sync-it legacy unlock | $44.99 | one-time |
| Sync-It Full Unlock | $89.99 | one-time |


## Frequently asked questions

### Is Ratio Calculator free?

Ratio Calculator costs $4.99, with no in-app purchases.

### Is Sync free?

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

### Do Ratio Calculator or Sync have ads?

Neither Ratio Calculator nor Sync shows ads.

### Which is updated more often, Ratio Calculator or Sync?

Ratio Calculator ships an update every 35 months, and Sync every 9 days. Most recently, Ratio Calculator was updated on September 10, 2026 and Sync on September 21, 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.*