# PurEst® vs SAPSFLASH

The clearest difference is price: PurEst® at Free against SAPSFLASH's $2.99. PurEst® also leads on iOS requirement (14.0 vs 17.6). SAPSFLASH's advantage is update cadence (monthly vs every 5 months). On ads, in-app purchases and device support there is nothing between them.

PurEst® is free to download; SAPSFLASH costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PurEst® ships an update every 5 months, SAPSFLASH monthly. The most recent releases landed on September 21, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | PurEst® | SAPSFLASH |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Size | 18 MB | 23 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Modality Apps](https://appshunter.io/developer/1122416398) | [Matt Guerreiro](https://appshunter.io/developer/1762628773) |

## What reviewers say

### PurEst®

[App page](https://appshunter.io/ios/app/purest/id1122416399)

**Features:** macOS Compatibility

**In-app purchases:** none


### SAPSFLASH

[App page](https://appshunter.io/ios/app/sapsflash/id6741659287)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PurEst® free?

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

### Is SAPSFLASH free?

SAPSFLASH costs $2.99, with no in-app purchases.

### Do PurEst® or SAPSFLASH have ads?

Neither PurEst® nor SAPSFLASH shows ads.

### Which is updated more often, PurEst® or SAPSFLASH?

PurEst® ships an update every 5 months, and SAPSFLASH monthly. Most recently, PurEst® was updated on September 21, 2026 and SAPSFLASH on September 12, 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.*