# Delta Calc vs ChatBlockus

The clearest difference is rating: Delta Calc at 5.0 against ChatBlockus's 1.0. Delta Calc also leads on price ($0.99 vs $1.99). ChatBlockus's advantage is in-app purchases (none vs 3) and update cadence (daily vs every 3 days). On ratings volume, ads, monetization model and device support there is nothing between them.

Delta Calc costs $0.99 and ChatBlockus $1.99 up front. Delta Calc sells 3 in-app purchases, starting at $0.99 per month. ChatBlockus asks for nothing beyond the download.

Delta Calc holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Delta Calc ships an update every 3 days, ChatBlockus daily. The most recent releases landed on June 1, 2026 and June 28, 2026 respectively.

## The numbers

| Metric | Delta Calc | ChatBlockus |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/delta-calc/id6504148868/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/chatblockus/id6667110949/reviews) |
| Number of ratings | **2** | 1 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | **Daily** |
| Monetization | Paid | Paid |
| Size | 2 MB | 1 MB |
| Requires iOS | 17.6 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Stephen Coffey](https://appshunter.io/developer/1723308273) | [Lucas Exequiel Di Tomase](https://appshunter.io/developer/1456307400) |

## What reviewers say

### Delta Calc

[App page](https://appshunter.io/ios/app/delta-calc/id6504148868)

Quickly calculate percent changes, discounts, and financial gains without complex math. Solve for any of the three values in the percent change formula with an intuitive interface and fun animations.

**Highlights:** Calculate percent changes, Solve for any variable in the formula, Customizable decimal places, Haptic feedback, Fun animations, Adjustable keyboard buttons

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Delta Calc Monthly | $0.99 | per month |
| Delta Calc Yearly | $4.99 | per year |
| Delta Calc Lifetime | $9.99 | one-time |


### ChatBlockus

[App page](https://appshunter.io/ios/app/chatblockus/id6667110949)

This Safari extension allows users to block comment sections on websites, providing a cleaner browsing experience. It is designed exclusively for Safari browsers on Apple devices.

**Highlights:** Blocks comment sections, Safari extension, Cleaner browsing experience, Works on iPhone and iPad

**Features:** Safari Extension

**In-app purchases:** none


## Frequently asked questions

### Is Delta Calc free?

Delta Calc costs $0.99, and also offers in-app purchases.

### Is ChatBlockus free?

ChatBlockus costs $1.99, with no in-app purchases.

### Which has better reviews, Delta Calc or ChatBlockus?

Delta Calc is rated higher. Delta Calc averages 5.0 out of 5 from 2 ratings, while ChatBlockus averages 1.0 from 1 ratings.

### Do Delta Calc or ChatBlockus have ads?

Neither Delta Calc nor ChatBlockus shows ads.

### Which is updated more often, Delta Calc or ChatBlockus?

Delta Calc ships an update every 3 days, and ChatBlockus daily. Most recently, Delta Calc was updated on June 1, 2026 and ChatBlockus on June 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.*