# Hybrid Pump vs WhispCal

The clearest difference is update cadence: WhispCal at every 4 days against Hybrid Pump's fortnightly. Hybrid Pump's advantage is iOS requirement (12.4 vs 16.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Hybrid Pump sells 2 in-app purchases, starting at $39.00 per month and WhispCal sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Hybrid Pump ships an update fortnightly, WhispCal every 4 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Hybrid Pump | WhispCal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Size | 55 MB | 87 MB |
| Requires iOS | **12.4** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [EKSTELASOFT, TOV](https://appshunter.io/developer/1593447113) | [Thomas Morice](https://appshunter.io/developer/1770273408) |

## What reviewers say

### Hybrid Pump

[App page](https://appshunter.io/ios/app/hybrid-pump/id6475736743)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HYBRID PUMP - Monthly | $39.00 | per month |
| HYBRID PUMP - Yearly | $424.99 | per year |


### WhispCal

[App page](https://appshunter.io/ios/app/whispcal-calorie-tracker/id6757860582)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $4.99 | per month |
| Yearly subscription | $39.99 | per year |


## Frequently asked questions

### Is Hybrid Pump free?

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

### Is WhispCal free?

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

### Do Hybrid Pump or WhispCal have ads?

Neither Hybrid Pump nor WhispCal shows ads.

### Which is updated more often, Hybrid Pump or WhispCal?

Hybrid Pump ships an update fortnightly, and WhispCal every 4 days. Most recently, Hybrid Pump was updated on October 25, 2026 and WhispCal on October 28, 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.*