# Shift By SimplyGRIND vs FastingCat

The clearest difference is in-app purchases: Shift By SimplyGRIND at none against FastingCat's 10. Shift By SimplyGRIND also leads on iOS requirement (13.0 vs 17.0). On price there is nothing between them.

Both are free to download. FastingCat sells 10 in-app purchases, starting at $0.99 per month. Shift By SimplyGRIND asks for nothing beyond the download.

## The numbers

| Metric | Shift By SimplyGRIND | FastingCat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (56 ratings)](https://appshunter.io/ios/app/fastingcat-fast-tracker-if/id6748528990/reviews)** |
| Number of ratings | — | **56** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 6 days |
| Monetization | — | Free with in-app purchases |
| Size | 160 MB | 24 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | — | **iPhone** |
| Age rating | 17+ | 4+ |
| Developer | [Remote Coach Ltd](https://appshunter.io/developer/1457588518) | [ProApps Solutions](https://appshunter.io/developer/1760776062) |

## What reviewers say

### Shift By SimplyGRIND

[App page](https://appshunter.io/ios/app/shift-by-simplygrind/id6453477393)

**In-app purchases:** none


### FastingCat

[App page](https://appshunter.io/ios/app/fastingcat-fast-tracker-if/id6748528990)

Master intermittent fasting with a focused timer and science-backed tracking. Monitor your progress with detailed insights, charts, and smart notifications to stay motivated and in control of your fasting journey. Your privacy is prioritized with on-device data storage and no ads.

**Highlights:** Customizable fasting presets, Science-backed fasting zone tracking, Detailed progress charts, Flexible scheduling with grace days, Smart notifications, Seamless weight logging, On-device data privacy

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Donation (Cookie) | $0.99 | per month |
| Monthly Donation (Donut) | $2.49 | per month |
| Monthly Donation (Smoothie) | $4.99 | per month |
| Monthly Donation (Salad) | $7.99 | per month |
| Monthly Donation (Protein) | $9.99 | per month |
| One-time Donation (Coffee) | $1.99 | one-time |
| One-time Donation (Sandwich) | $4.99 | one-time |
| One-time Donation (Pizza) | $9.99 | one-time |
| One-time Donation (Groceries) | $24.99 | one-time |
| One-time Donation (Books) | $49.99 | one-time |


## Frequently asked questions

### Is Shift By SimplyGRIND free?

Shift By SimplyGRIND is free to download, with no in-app purchases.

### Is FastingCat free?

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

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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.*