Comparison

Challenges vs Tech Logbook By DCR

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Challenges

Monthly Activities Tracking

About

Challenges

Features

Read full description

Welcome to Challenges! The app made for those who want to conquer all their monthly challenges given by the Activity app. Track your progress through elegant graphics and effective reports. Challenges is indispensable for anyone who owns an Apple Watch and is thirsty for challenges. *Challenges requires you to have installed the Activity app and a paired Apple Watch. Some of your health data will need to be collected for the app to work as expected. Some reports can only be viewed after a in-app purchase has been made.

About

Tech Logbook By DCR

Features

Read full description

To be able to fill maintenance task on the logbook to show to aviation authorities proof of work. With PDF export of the entries and CV.

Screenshots

Challenges4 screens

Tech Logbook By DCR4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 4 level

Challenges versus Tech Logbook By DCR: the parameters behind the verdict, then further details
Parameter	Challenges	Tech Logbook By DCR
Price	Free	Free
Update frequency	Every 8 days — better	Monthly
Ads	No	No
In-app purchases	Yes	Yes
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	13.4 — better	15.6
Further details — not scored
Size	5 MB	20 MB
Age rating	4+	4+
Developer	Felipe Braunger Valio Desenvolvimento de Sistemas Ltda	CYRIL DEPECKER

In-app purchases

1 purchases

Challenges

One-time1

Premium access$0.99

1 purchases

Tech Logbook By DCR

Subscriptions1

Premium Yearly14 Days trial$8.991 Year

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.