# KeepCount vs HydroCalc

The clearest difference is update cadence: KeepCount at every 10 days against HydroCalc's every 5 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. KeepCount sells 2 in-app purchases, starting at $1.99 per month and HydroCalc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

KeepCount ships an update every 10 days, HydroCalc every 5 weeks. The most recent releases landed on November 9, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | KeepCount | HydroCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/keepcount-tally-counter/id6758891370/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 5 weeks |
| Monetization | Freemium | — |
| Size | 20 MB | 2 MB |
| Requires iOS | 18.2 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [1881 Digital, LLC](https://appshunter.io/developer/1332213954) | [Piotr Kaminski](https://appshunter.io/developer/6799375980) |

## What reviewers say

### KeepCount

[App page](https://appshunter.io/ios/app/keepcount-tally-counter/id6758891370)

This app transforms your device into a customizable tally board for tracking anything from game scores and workouts to inventory and habits. Easily add, resize, and color-code counters, with options for undo/redo and home screen widgets for quick access. An optional Pro upgrade unlocks unlimited boards and history.

**Highlights:** Customizable tally boards, Count up, down, or exact numbers, Adjustable step values, Undo/redo functionality, Home screen widgets, Siri and Shortcuts integration

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KeepCount Pro Monthly | $1.99 | per month |
| KeepCount Pro Annual | $19.99 | per year |


### HydroCalc

[App page](https://appshunter.io/ios/app/hydrocalc-heating-and-flow/id6801788464)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HydroCalc Pro | $3.99 | one-time |


## Frequently asked questions

### Is KeepCount free?

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

### Is HydroCalc free?

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

### Do KeepCount or HydroCalc have ads?

Neither KeepCount nor HydroCalc shows ads.

### Which is updated more often, KeepCount or HydroCalc?

KeepCount ships an update every 10 days, and HydroCalc every 5 weeks. Most recently, KeepCount was updated on November 9, 2026 and HydroCalc on November 6, 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.*