Comparison

Big Timer vs Mobile Event Log

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

Head to head

Big Timer

Large and easy to see

Free

🔧 Utilities

★ 3.06 ratingsView app →

About

Big Timer

This utility app features large, easy-to-read text for simple stopwatch and countdown timer functions. It's designed for quick visibility from a distance, making it ideal for straightforward timekeeping needs.

Highlights

Large, easy-to-read display
Stopwatch functionality
Countdown timer functionality
Simple interface

Features

Read full description

Large letters make it easy to see and read even from a distance It can be used simply as a stopwatch or countdown timer.

About

Mobile Event Log

Features

Read full description

The Mobile Event Log App is part of the O2A framework and related to registry.o2a-data.de. An O2A overview can be found here: https://docs.o2a-data.de/registry/ Its functionality allows to create item events, mounts and umounts. An entry provides metadata to a scientific item operation. Details can be found here: https://docs.o2a-data.de/registry/gui/#events The app is designed to be used offline. Its target group are users who already use the online version registry.o2a-data.de and have a user account. An initial configuration and syncing the events back to https://registry.o2a-data.de/ requires to be online. Privacy Policy: https://registry.o2a-data.de/privacy Legal Notices: https://registry.o2a-data.de/legal

Screenshots

Big Timer3 screens

Mobile Event Log4 screens

Verdict

The call

The clearest difference is ads: Mobile Event Log at none against Big Timer's shown. Mobile Event Log also leads on iOS requirement (13.0 vs 15.6). On price, update cadence, 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Big Timer ships an update every 2 months, Mobile Event Log every 6 weeks. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

Scorecard2 real differences · 8 level

Big Timer versus Mobile Event Log: the parameters behind the verdict, then further details
Parameter	Big Timer	Mobile Event Log
Price	Free	Free
Rating	3.0 (6 ratings) — better	—
Positive reviews	20.0% of reviews	—
Number of ratings	6 — better	—
Update frequency	Every 2 months	Every 6 weeks — better
Ads	Yes	No — better
In-app purchases	No	No
Monetization	Ad-supported	—
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	15.6	13.0 — better
Further details — not scored
Size	13 MB	19 MB
Age rating	4+	4+
Developer	Ryouhei Azuma	Alfred-Wegener-Institut

In-app purchases

None

Big Timer

No in-app purchases

None

Mobile Event Log

No in-app purchases

Questions

Is Big Timer free?

Big Timer is free to download, with no in-app purchases.

Is Mobile Event Log free?

Mobile Event Log is free to download, with no in-app purchases.

Do Big Timer or Mobile Event Log have ads?

Big Timer shows ads; Mobile Event Log does not.

Which is updated more often, Big Timer or Mobile Event Log?

Big Timer ships an update every 2 months, and Mobile Event Log every 6 weeks. Most recently, Big Timer was updated on October 7, 2026 and Mobile Event Log on October 11, 2026.