# SAR vs CHRONO Flex

The clearest difference is iOS requirement: SAR at 13.0 against CHRONO Flex's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SAR ships an update every 2 months, CHRONO Flex every 5 weeks. The most recent releases landed on September 14, 2026 and July 24, 2026 respectively.

## The numbers

| Metric | SAR | CHRONO Flex |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Size | 26 MB | 16 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tien Sy NGUYEN](https://appshunter.io/developer/1745341653) | [CHRONO Flex](https://appshunter.io/developer/909331288) |

## What reviewers say

### SAR

[App page](https://appshunter.io/ios/app/sar-tools/id6502403516)

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

**In-app purchases:** none


### CHRONO Flex

[App page](https://appshunter.io/ios/app/chrono-flex/id6692622370)

**In-app purchases:** none


## Frequently asked questions

### Is SAR free?

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

### Is CHRONO Flex free?

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

### Do SAR or CHRONO Flex have ads?

Neither SAR nor CHRONO Flex shows ads.

### Which is updated more often, SAR or CHRONO Flex?

SAR ships an update every 2 months, and CHRONO Flex every 5 weeks. Most recently, SAR was updated on September 14, 2026 and CHRONO Flex on July 24, 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.*