Simple, fast and useful tools

Articles

Read AppErgo articles from newest to oldest.

Browse by category

August 25, 2026

12 free tools for timers and time calculations

Measure a duration or start a countdown The Stopwatch starts from zero and measures the time that actually passes. It is useful when the duration of an activity is not known in advance: a work session, exercise, reading session, test or technical task. It can be paused and resumed, while laps make it possible to record intermediate stages without losing the total elapsed time. Each lap has its own duration, making it... [read more]

AppErgo hourglass set to 3 minutes with remaining time display before start

August 24, 2026

30 free random tools for draws, shuffling and dice rolls

Choose between several possibilities The Random Wheel makes the choice more visual. Between two and eight possibilities can be placed on a colored wheel, which spins before stopping on one of them. This format is particularly useful when the draw should be visible to several people, when you want to add a little suspense, or simply when choosing an activity, task or option in a more playful way. Each section of the wheel has... [read more]

AppErgo random wheel showing several meal choices with Burger as the selected result

August 24, 2026

15 free audio tools for rhythm, frequencies and sound

Work with rhythm and tempo The Metronome lets you simply choose a tempo in BPM and a time signature to obtain a regular pulse, both audible and visual. At 60 BPM, one beat occurs every second; at 120 BPM, every half second. The first beat of each measure can be accented, and the sound can be disabled when a visual indication is enough. Traditional markings such as largo, andante, allegro or presto also provide useful... [read more]

AppErgo metronome set to 100 BPM in 4/4 with accent, count-in and display options

August 24, 2026

13 free tools for working with text

Analyze, clean and standardize text The Text Counter provides a quick overview of a piece of content: number of characters with or without spaces, words, letters, digits, uppercase letters, lowercase letters, spaces and punctuation marks. A limit can also be set to track the length of a title, description, post or any field subject to a specific restriction. A progress bar then immediately shows how much of the limit has been... [read more]

AppErgo text counter showing live counts for characters, words, lines, sentences and spaces

August 5, 2026

MYSTERIOSA: A New French Treasure Hunt Launched in 2026

What Is MYSTERIOSA? MYSTERIOSA is a French treasure hunt launched on June 4, 2026, by Éditions du Trésor. It is based on an illustrated book of around 120 pages containing stories, artwork, hidden clues, and eleven puzzles. Solving them should eventually lead participants to a chest hidden somewhere in France. The hunt is aimed primarily at adults because of the announced difficulty of its puzzles. Although players are free... [read more]

Treasure hunter digging beside a partly uncovered wooden chest

August 5, 2026

Free Tools I Use to Test and Improve My Website

Check the Technical Foundations of a Page Before measuring performance or running an SEO audit, I begin by checking the document structure and the overall technical quality of the page. The W3C HTML Validator and Lighthouse are two excellent starting points, as they examine different but complementary aspects. The W3C HTML Validator The W3C HTML Validator is usually the first tool I use. It checks whether a page’s markup... [read more]

W3C HTML validation form

July 22, 2026

AppErgo v0.9: a transition step between v0.8 and v1

From v0.8 to v0.9: a long construction phase Version 0.8 has had a special place in AppErgo’s history. It lasted longer than some previous versions because it supported a major evolution of the website. With v0.8, AppErgo went from around ten web tools to more than 150, which deeply changed the scale of the project. The following versions, from v0.8.1 to v0.8.9, then made it possible to stabilise many tools, add new ones... [read more]

AppErgo English homepage in version 0.9.1

July 9, 2026

AppErgo Virtual Dice: Fast and Lightweight

Lightweight, fast virtual dice to roll a d6, d20, d100, or several dice online.

June 21, 2026

The 6 AppErgo commitments for its web tools

Commitment #1 — 100% free AppErgo’s online tools are free. Access is not limited by a payment, a subscription, a credit system, or a trial version. The goal is to provide practical utilities for simple everyday needs. As I have personally used free online tools for a long time, it felt natural to offer AppErgo’s tools in the same spirit: at no cost to visitors. Commitment #2 — No sign-up AppErgo’s online tools are freely... [read more]

Label with the word FREE

June 13, 2026

AppErgo v0.8: the online tools catalog scales up

From 10 to more than 150 tools The most obvious change is the size of the catalog. Between v0.7 and v0.8, AppErgo grew from around ten tools to more than 150. Several categories have been added or considerably expanded. The “Codes” category is particularly extensive, with around 60 tools on its own. This growth does not mean that every page has become heavy. Individual tool pages remain lightweight and load quickly. Only the... [read more]

"All online tools" page