# Today vs HydroCalc Plus

The clearest difference is rating: HydroCalc Plus at 5.0 against Today's 4.5. HydroCalc Plus also leads on review sentiment (100% vs 75%) and device support (3 vs 1). Today's advantage is in-app purchases (none vs 4) and price ($0.99 vs $6.99). On ratings volume, update cadence, ads and monetization model there is nothing between them.

Today costs $0.99 and HydroCalc Plus $6.99 up front. HydroCalc Plus sells 4 one-off in-app purchases. Today asks for nothing beyond the download.

HydroCalc Plus holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 75% of Today's written reviews are positive against 100% of HydroCalc Plus's.

Today ships an update monthly, HydroCalc Plus every 3 weeks. The most recent releases landed on October 14, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Today | HydroCalc Plus |
| --- | --- | --- |
| Price | **$0.99** | $6.99 |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/today-to-do-list/id572578212/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hydrocalc-plus/id578807688/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Paid | Paid |
| Best chart rank | **#197** | — |
| Size | 3 MB | 34 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Viktoriia Globa](https://appshunter.io/developer/572578215) | [Transparent Blue Water LLC](https://appshunter.io/developer/1847968351) |

## What reviewers say

### Today

[App page](https://appshunter.io/ios/app/today-to-do-list/id572578212)

**Currently charting:** #197 Top Paid · Productivity (US App Store)

This minimalist daily planner helps you focus on what's important today by clearing unfinished tasks from view. Quickly add, edit, and postpone tasks, with an optional daily note for a key goal. Events from your iOS Calendar are automatically integrated.

**Highlights:** Quick task adding and editing, One-tap task postponement, Optional daily note feature, Automatic iOS Calendar event integration, Task prioritization with text formatting, Copy/paste tasks between days and apps

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

**In-app purchases:** none


### HydroCalc Plus

[App page](https://appshunter.io/ios/app/hydrocalc-plus/id578807688)

A professional tool for hydraulic engineers to calculate pressure losses in piping systems. It supports US and SI units, offers an extensive pipe material and fittings database, and includes inverse calculations for design optimization.

**Highlights:** Friction head loss calculation (Hazen-Williams), US and SI unit support, Extensive pipe material library, Fittings and valves database, Inverse calculation mode, Real-time results (velocity, losses)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pump Power Calculator | $1.99 | one-time |
| System Curve Generator | $1.99 | one-time |
| Pipe Database | $1.99 | one-time |
| Industrial Fluids Pack | $2.99 | one-time |


## Frequently asked questions

### Is Today free?

Today costs $0.99, with no in-app purchases.

### Is HydroCalc Plus free?

HydroCalc Plus costs $6.99, and also offers in-app purchases.

### Which has better reviews, Today or HydroCalc Plus?

HydroCalc Plus is rated higher. Today averages 4.5 out of 5 from 2 ratings, while HydroCalc Plus averages 5.0 from 1 ratings.

### Do Today or HydroCalc Plus have ads?

Neither Today nor HydroCalc Plus shows ads.

### Which is updated more often, Today or HydroCalc Plus?

Today ships an update monthly, and HydroCalc Plus every 3 weeks. Most recently, Today was updated on October 14, 2026 and HydroCalc Plus on October 21, 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.*