# DCircuit Lab vs Check It Again

The clearest difference is review sentiment: Check It Again at 100% against DCircuit Lab's 11%. Check It Again also leads on rating (5.0 vs 3.0) and update cadence (every 2 days vs every 10 months). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

DCircuit Lab costs $3.99 and Check It Again $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Check It Again holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 7 respectively. Written reviews point the same way: 11% of DCircuit Lab's written reviews are positive against 100% of Check It Again's.

DCircuit Lab ships an update every 10 months, Check It Again every 2 days. Both last shipped on October 16, 2026.

## The numbers

| Metric | DCircuit Lab | Check It Again |
| --- | --- | --- |
| Price | $3.99 | **$2.99** |
| Rating | [3.0 (3 ratings)](https://appshunter.io/ios/app/dcircuit-lab/id382544208/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/check-it-again/id6760605393/reviews)** |
| Number of ratings | 3 | **7** |
| Positive reviews | 11.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 days** |
| Monetization | Paid | Paid |
| Size | 3 MB | 1 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 17+ | 4+ |
| Developer | [Fabrizio Boco](https://appshunter.io/developer/466239616) | [EARL C DENNEY](https://appshunter.io/developer/1885275340) |

## What reviewers say

### DCircuit Lab

[App page](https://appshunter.io/ios/app/dcircuit-lab/id382544208)

Design and simulate digital circuits with a comprehensive set of tools. Explore combinatorial and sequential logic, including gates, flip-flops, and custom components. Dynamic simulation with timing charts helps analyze circuit behavior.

**Highlights:** Combinatorial and sequential circuit simulation, Single-step and step-by-step simulation modes, Dynamic simulation with timing charts, Wide range of logic gates and flip-flops, Custom component creation via truth tables, Integrated video tutorials

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

**In-app purchases:** none


### Check It Again

[App page](https://appshunter.io/ios/app/check-it-again/id6760605393)

This app provides a straightforward way to create and reuse checklists for recurring tasks. It focuses on simplicity, allowing users to check off items without complex features or data tracking. Your data is kept private and syncs across your Apple devices via iCloud.

**Highlights:** Create reusable checklists, Check off items, Private iCloud sync, No account required, Ad-free experience, No premium features

**In-app purchases:** none


## Frequently asked questions

### Is DCircuit Lab free?

DCircuit Lab costs $3.99, with no in-app purchases.

### Is Check It Again free?

Check It Again costs $2.99, with no in-app purchases.

### Which has better reviews, DCircuit Lab or Check It Again?

Check It Again is rated higher. DCircuit Lab averages 3.0 out of 5 from 3 ratings, while Check It Again averages 5.0 from 7 ratings.

### Do DCircuit Lab or Check It Again have ads?

Neither DCircuit Lab nor Check It Again shows ads.

### Which is updated more often, DCircuit Lab or Check It Again?

DCircuit Lab ships an update every 10 months, and Check It Again every 2 days. Most recently, DCircuit Lab was updated on October 16, 2026 and Check It Again on October 16, 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.*