# Challenges vs Tech Logbook By DCR

The clearest difference is update cadence: Challenges at every 8 days against Tech Logbook By DCR's monthly. Challenges also leads on iOS requirement (13.4 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Challenges sells 1 one-off in-app purchase and Tech Logbook By DCR sells 1 in-app purchase, starting at $8.99 per year. Whichever you choose, the download price is not the number that matters.

Challenges ships an update every 8 days, Tech Logbook By DCR monthly. The most recent releases landed on October 10, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Challenges | Tech Logbook By DCR |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Monthly |
| Size | 5 MB | 20 MB |
| Requires iOS | **13.4** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Felipe Braunger Valio Desenvolvimento de Sistemas Ltda](https://appshunter.io/developer/615749291) | [CYRIL DEPECKER](https://appshunter.io/developer/1837250136) |

## What reviewers say

### Challenges

[App page](https://appshunter.io/ios/app/challenges-activity-tracker/id1517250920)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium access | $0.99 | one-time |


### Tech Logbook By DCR

[App page](https://appshunter.io/ios/app/tech-logbook-by-dcr/id6752611583)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Yearly | $8.99 | per year |


## Frequently asked questions

### Is Challenges free?

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

### Is Tech Logbook By DCR free?

Tech Logbook By DCR is free to download, with in-app purchases available.

### Do Challenges or Tech Logbook By DCR have ads?

Neither Challenges nor Tech Logbook By DCR shows ads.

### Which is updated more often, Challenges or Tech Logbook By DCR?

Challenges ships an update every 8 days, and Tech Logbook By DCR monthly. Most recently, Challenges was updated on October 10, 2026 and Tech Logbook By DCR on October 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*